Deprecate Constants.CHARSET in favor of StandardCharsets.UTF_8

Change-Id: I3b748620f067582afef20f144feebe40d0332be2
Signed-off-by: David Pursehouse <david.pursehouse@gmail.com>

48 files changed, 156 insertions, 119 deletions

diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/attributes/AttributesNode.java b/org.eclipse.jgit/src/org/eclipse/jgit/attributes/AttributesNode.java
index 62bf9f2737..bcd72311dd 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/attributes/AttributesNode.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/attributes/AttributesNode.java
@@ -42,6 +42,8 @@
  */
 package org.eclipse.jgit.attributes;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStream;
@@ -50,8 +52,6 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 
-import org.eclipse.jgit.lib.Constants;
-
 /**
  * Represents a bundle of attributes inherited from a base directory.
  *
@@ -115,7 +115,7 @@ public class AttributesNode {
 	}
 
 	private static BufferedReader asReader(InputStream in) {
-		return new BufferedReader(new InputStreamReader(in, Constants.CHARSET));
+		return new BufferedReader(new InputStreamReader(in, UTF_8));
 	}
 
 	/**
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/dircache/DirCacheEntry.java b/org.eclipse.jgit/src/org/eclipse/jgit/dircache/DirCacheEntry.java
index fee9f51000..6b1d4f4d8a 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/dircache/DirCacheEntry.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/dircache/DirCacheEntry.java
@@ -46,6 +46,8 @@
 
 package org.eclipse.jgit.dircache;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 import java.io.ByteArrayOutputStream;
 import java.io.EOFException;
 import java.io.IOException;
@@ -772,7 +774,7 @@ public class DirCacheEntry {
 	}
 
 	static String toString(byte[] path) {
-		return Constants.CHARSET.decode(ByteBuffer.wrap(path)).toString();
+		return UTF_8.decode(ByteBuffer.wrap(path)).toString();
 	}
 
 	static int getMaximumInfoLength(boolean extended) {
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/dircache/DirCacheTree.java b/org.eclipse.jgit/src/org/eclipse/jgit/dircache/DirCacheTree.java
index b605f3ca8e..11a3474a35 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/dircache/DirCacheTree.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/dircache/DirCacheTree.java
@@ -44,6 +44,7 @@
 
 package org.eclipse.jgit.dircache;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
 import static org.eclipse.jgit.lib.FileMode.TREE;
 import static org.eclipse.jgit.lib.TreeFormatter.entrySize;
 
@@ -276,7 +277,7 @@ public class DirCacheTree {
 	 */
 	public String getNameString() {
 		final ByteBuffer bb = ByteBuffer.wrap(encodedName);
-		return Constants.CHARSET.decode(bb).toString();
+		return UTF_8.decode(bb).toString();
 	}
 
 	/**
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/hooks/GitHook.java b/org.eclipse.jgit/src/org/eclipse/jgit/hooks/GitHook.java
index 8a61d1b0b1..ad43e2ca83 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/hooks/GitHook.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/hooks/GitHook.java
@@ -42,7 +42,7 @@
  */
 package org.eclipse.jgit.hooks;
 
-import static org.eclipse.jgit.lib.Constants.CHARSET;
+import static java.nio.charset.StandardCharsets.UTF_8;
 
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
@@ -158,7 +158,7 @@ abstract class GitHook<T> implements Callable<T> {
 		PrintStream hookErrRedirect = null;
 		try {
 			hookErrRedirect = new PrintStream(errorByteArray, false,
-					CHARSET.name());
+					UTF_8.name());
 		} catch (UnsupportedEncodingException e) {
 			// UTF-8 is guaranteed to be available
 		}
@@ -167,7 +167,7 @@ abstract class GitHook<T> implements Callable<T> {
 				hookErrRedirect, getStdinArgs());
 		if (result.isExecutedWithError()) {
 			throw new AbortedByHookException(
-					new String(errorByteArray.toByteArray(), CHARSET),
+					new String(errorByteArray.toByteArray(), UTF_8),
 					getHookName(), result.getExitCode());
 		}
 	}
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/ignore/IgnoreNode.java b/org.eclipse.jgit/src/org/eclipse/jgit/ignore/IgnoreNode.java
index d570fde36f..864f8bfc02 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/ignore/IgnoreNode.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/ignore/IgnoreNode.java
@@ -42,6 +42,8 @@
  */
 package org.eclipse.jgit.ignore;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 import java.io.BufferedReader;
 import java.io.IOException;
 import java.io.InputStream;
@@ -50,8 +52,6 @@ import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
 
-import org.eclipse.jgit.lib.Constants;
-
 /**
  * Represents a bundle of ignore rules inherited from a base directory.
  *
@@ -121,7 +121,7 @@ public class IgnoreNode {
 	}
 
 	private static BufferedReader asReader(InputStream in) {
-		return new BufferedReader(new InputStreamReader(in, Constants.CHARSET));
+		return new BufferedReader(new InputStreamReader(in, UTF_8));
 	}
 
 	/**
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/dfs/DfsStreamKey.java b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/dfs/DfsStreamKey.java
index c11f696708..8793d83126 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/dfs/DfsStreamKey.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/dfs/DfsStreamKey.java
@@ -43,7 +43,7 @@
 
 package org.eclipse.jgit.internal.storage.dfs;
 
-import static org.eclipse.jgit.lib.Constants.CHARSET;
+import static java.nio.charset.StandardCharsets.UTF_8;
 
 import java.util.Arrays;
 
@@ -67,7 +67,7 @@ public abstract class DfsStreamKey {
 	 */
 	public static DfsStreamKey of(DfsRepositoryDescription repo, String name,
 			@Nullable PackExt ext) {
-		return new ByteArrayDfsStreamKey(repo, name.getBytes(CHARSET), ext);
+		return new ByteArrayDfsStreamKey(repo, name.getBytes(UTF_8), ext);
 	}
 
 	final int hash;
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/GcLog.java b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/GcLog.java
index 0e587ce827..82458c1acf 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/GcLog.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/GcLog.java
@@ -43,7 +43,7 @@
 
 package org.eclipse.jgit.internal.storage.file;
 
-import static org.eclipse.jgit.lib.Constants.CHARSET;
+import static java.nio.charset.StandardCharsets.UTF_8;
 
 import java.io.File;
 import java.io.IOException;
@@ -171,6 +171,6 @@ class GcLog {
 		if (content.length() > 0) {
 			nonEmpty = true;
 		}
-		lock.write(content.getBytes(CHARSET));
+		lock.write(content.getBytes(UTF_8));
 	}
 }
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/LazyObjectIdSetFile.java b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/LazyObjectIdSetFile.java
index c82d52e79c..3d0e9c7189 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/LazyObjectIdSetFile.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/LazyObjectIdSetFile.java
@@ -43,7 +43,7 @@
 
 package org.eclipse.jgit.internal.storage.file;
 
-import static org.eclipse.jgit.lib.Constants.CHARSET;
+import static java.nio.charset.StandardCharsets.UTF_8;
 
 import java.io.BufferedReader;
 import java.io.File;
@@ -86,7 +86,7 @@ public class LazyObjectIdSetFile implements ObjectIdSet {
 	private ObjectIdOwnerMap<Entry> load() {
 		ObjectIdOwnerMap<Entry> r = new ObjectIdOwnerMap<>();
 		try (FileInputStream fin = new FileInputStream(src);
-				Reader rin = new InputStreamReader(fin, CHARSET);
+				Reader rin = new InputStreamReader(fin, UTF_8);
 				BufferedReader br = new BufferedReader(rin)) {
 			MutableObjectId id = new MutableObjectId();
 			for (String line; (line = br.readLine()) != null;) {
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/RefDirectory.java b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/RefDirectory.java
index 6a18df86e2..de7e4b3f25 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/RefDirectory.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/file/RefDirectory.java
@@ -46,7 +46,7 @@
 
 package org.eclipse.jgit.internal.storage.file;
 
-import static org.eclipse.jgit.lib.Constants.CHARSET;
+import static java.nio.charset.StandardCharsets.UTF_8;
 import static org.eclipse.jgit.lib.Constants.HEAD;
 import static org.eclipse.jgit.lib.Constants.LOGS;
 import static org.eclipse.jgit.lib.Constants.OBJECT_ID_STRING_LENGTH;
@@ -945,7 +945,7 @@ public class RefDirectory extends RefDatabase {
 			try (BufferedReader br = new BufferedReader(new InputStreamReader(
 					new DigestInputStream(new FileInputStream(packedRefsFile),
 							digest),
-					CHARSET))) {
+					UTF_8))) {
 				try {
 					return new PackedRefList(parsePackedRefs(br), snapshot,
 							ObjectId.fromRaw(digest.digest()));
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/reftable/BlockReader.java b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/reftable/BlockReader.java
index 942d72fe23..ce2ba4a2e1 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/reftable/BlockReader.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/reftable/BlockReader.java
@@ -43,7 +43,7 @@
 
 package org.eclipse.jgit.internal.storage.reftable;
 
-import static org.eclipse.jgit.lib.Constants.CHARSET;
+import static java.nio.charset.StandardCharsets.UTF_8;
 import static org.eclipse.jgit.internal.storage.reftable.BlockWriter.compare;
 import static org.eclipse.jgit.internal.storage.reftable.ReftableConstants.FILE_BLOCK_TYPE;
 import static org.eclipse.jgit.internal.storage.reftable.ReftableConstants.FILE_HEADER_LEN;
@@ -138,7 +138,7 @@ class BlockReader {
 		if (blockType == LOG_BLOCK_TYPE) {
 			len -= 9;
 		}
-		return RawParseUtils.decode(CHARSET, nameBuf, 0, len);
+		return RawParseUtils.decode(UTF_8, nameBuf, 0, len);
 	}
 
 	boolean match(byte[] match, boolean matchIsPrefix) {
@@ -171,7 +171,7 @@ class BlockReader {
 	}
 
 	Ref readRef() throws IOException {
-		String name = RawParseUtils.decode(CHARSET, nameBuf, 0, nameLen);
+		String name = RawParseUtils.decode(UTF_8, nameBuf, 0, nameLen);
 		switch (valueType & VALUE_TYPE_MASK) {
 		case VALUE_NONE: // delete
 			return newRef(name);
@@ -266,7 +266,7 @@ class BlockReader {
 	private String readValueString() {
 		int len = readVarint32();
 		int end = ptr + len;
-		String s = RawParseUtils.decode(CHARSET, buf, ptr, end);
+		String s = RawParseUtils.decode(UTF_8, buf, ptr, end);
 		ptr = end;
 		return s;
 	}
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/reftable/BlockWriter.java b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/reftable/BlockWriter.java
index 3d8fbf4996..b3173e838c 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/reftable/BlockWriter.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/reftable/BlockWriter.java
@@ -43,7 +43,7 @@
 
 package org.eclipse.jgit.internal.storage.reftable;
 
-import static org.eclipse.jgit.lib.Constants.CHARSET;
+import static java.nio.charset.StandardCharsets.UTF_8;
 import static org.eclipse.jgit.internal.storage.reftable.ReftableConstants.FILE_HEADER_LEN;
 import static org.eclipse.jgit.internal.storage.reftable.ReftableConstants.INDEX_BLOCK_TYPE;
 import static org.eclipse.jgit.internal.storage.reftable.ReftableConstants.LOG_BLOCK_TYPE;
@@ -440,7 +440,7 @@ class BlockWriter {
 		}
 
 		private static byte[] nameUtf8(Ref ref) {
-			return ref.getName().getBytes(CHARSET);
+			return ref.getName().getBytes(UTF_8);
 		}
 	}
 
@@ -559,13 +559,13 @@ class BlockWriter {
 			this.newId = newId;
 			this.timeSecs = who.getWhen().getTime() / 1000L;
 			this.tz = (short) who.getTimeZoneOffset();
-			this.name = who.getName().getBytes(CHARSET);
-			this.email = who.getEmailAddress().getBytes(CHARSET);
-			this.msg = message.getBytes(CHARSET);
+			this.name = who.getName().getBytes(UTF_8);
+			this.email = who.getEmailAddress().getBytes(UTF_8);
+			this.msg = message.getBytes(UTF_8);
 		}
 
 		static byte[] key(String ref, long index) {
-			byte[] name = ref.getBytes(CHARSET);
+			byte[] name = ref.getBytes(UTF_8);
 			byte[] key = Arrays.copyOf(name, name.length + 1 + 8);
 			NB.encodeInt64(key, key.length - 8, reverseUpdateIndex(index));
 			return key;
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/reftable/ReftableOutputStream.java b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/reftable/ReftableOutputStream.java
index 44bbb16219..1fc43c9fac 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/reftable/ReftableOutputStream.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/reftable/ReftableOutputStream.java
@@ -43,7 +43,7 @@
 
 package org.eclipse.jgit.internal.storage.reftable;
 
-import static org.eclipse.jgit.lib.Constants.CHARSET;
+import static java.nio.charset.StandardCharsets.UTF_8;
 import static org.eclipse.jgit.internal.storage.reftable.ReftableConstants.FILE_HEADER_LEN;
 import static org.eclipse.jgit.internal.storage.reftable.ReftableConstants.INDEX_BLOCK_TYPE;
 import static org.eclipse.jgit.internal.storage.reftable.ReftableConstants.LOG_BLOCK_TYPE;
@@ -160,7 +160,7 @@ class ReftableOutputStream extends OutputStream {
 	}
 
 	void writeVarintString(String s) {
-		writeVarintString(s.getBytes(CHARSET));
+		writeVarintString(s.getBytes(UTF_8));
 	}
 
 	void writeVarintString(byte[] msg) {
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/reftable/ReftableReader.java b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/reftable/ReftableReader.java
index bd52256c2b..81b30e4cb9 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/reftable/ReftableReader.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/internal/storage/reftable/ReftableReader.java
@@ -43,7 +43,7 @@
 
 package org.eclipse.jgit.internal.storage.reftable;
 
-import static org.eclipse.jgit.lib.Constants.CHARSET;
+import static java.nio.charset.StandardCharsets.UTF_8;
 import static org.eclipse.jgit.internal.storage.reftable.BlockReader.decodeBlockLen;
 import static org.eclipse.jgit.internal.storage.reftable.ReftableConstants.FILE_BLOCK_TYPE;
 import static org.eclipse.jgit.internal.storage.reftable.ReftableConstants.FILE_FOOTER_LEN;
@@ -182,7 +182,7 @@ public class ReftableReader extends Reftable {
 	public RefCursor seekRef(String refName) throws IOException {
 		initRefIndex();
 
-		byte[] key = refName.getBytes(CHARSET);
+		byte[] key = refName.getBytes(UTF_8);
 		RefCursorImpl i = new RefCursorImpl(refEnd, key, false);
 		i.block = seek(REF_BLOCK_TYPE, key, refIndex, 0, refEnd);
 		return i;
@@ -193,7 +193,7 @@ public class ReftableReader extends Reftable {
 	public RefCursor seekRefsWithPrefix(String prefix) throws IOException {
 		initRefIndex();
 
-		byte[] key = prefix.getBytes(CHARSET);
+		byte[] key = prefix.getBytes(UTF_8);
 		RefCursorImpl i = new RefCursorImpl(refEnd, key, true);
 		i.block = seek(REF_BLOCK_TYPE, key, refIndex, 0, refEnd);
 		return i;
@@ -232,7 +232,7 @@ public class ReftableReader extends Reftable {
 		initLogIndex();
 		if (logPosition > 0) {
 			byte[] key = LogEntry.key(refName, updateIndex);
-			byte[] match = refName.getBytes(CHARSET);
+			byte[] match = refName.getBytes(UTF_8);
 			LogCursorImpl i = new LogCursorImpl(logEnd, match);
 			i.block = seek(LOG_BLOCK_TYPE, key, logIndex, logPosition, logEnd);
 			return i;
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/lib/BlobBasedConfig.java b/org.eclipse.jgit/src/org/eclipse/jgit/lib/BlobBasedConfig.java
index e008be3a3c..59154b78bf 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/lib/BlobBasedConfig.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/lib/BlobBasedConfig.java
@@ -45,7 +45,7 @@
 
 package org.eclipse.jgit.lib;
 
-import static org.eclipse.jgit.lib.Constants.CHARSET;
+import static java.nio.charset.StandardCharsets.UTF_8;
 
 import java.io.FileNotFoundException;
 import java.io.IOException;
@@ -83,7 +83,7 @@ public class BlobBasedConfig extends Config {
 		super(base);
 		final String decoded;
 		if (isUtf8(blob)) {
-			decoded = RawParseUtils.decode(CHARSET, blob, 3, blob.length);
+			decoded = RawParseUtils.decode(UTF_8, blob, 3, blob.length);
 		} else {
 			decoded = RawParseUtils.decode(blob);
 		}
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/lib/CommitBuilder.java b/org.eclipse.jgit/src/org/eclipse/jgit/lib/CommitBuilder.java
index 59a13f6550..c30833d0a6 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/lib/CommitBuilder.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/lib/CommitBuilder.java
@@ -45,6 +45,8 @@
 
 package org.eclipse.jgit.lib;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.OutputStreamWriter;
@@ -93,7 +95,7 @@ public class CommitBuilder {
 	 */
 	public CommitBuilder() {
 		parentIds = EMPTY_OBJECTID_LIST;
-		encoding = Constants.CHARSET;
+		encoding = UTF_8;
 	}
 
 	/**
@@ -314,7 +316,7 @@ public class CommitBuilder {
 			w.flush();
 			os.write('\n');
 
-			if (getEncoding() != Constants.CHARSET) {
+			if (getEncoding() != UTF_8) {
 				os.write(hencoding);
 				os.write(' ');
 				os.write(Constants.encodeASCII(getEncoding().name()));
@@ -375,7 +377,7 @@ public class CommitBuilder {
 		r.append(committer != null ? committer.toString() : "NOT_SET");
 		r.append("\n");
 
-		if (encoding != null && encoding != Constants.CHARSET) {
+		if (encoding != null && encoding != UTF_8) {
 			r.append("encoding ");
 			r.append(encoding.name());
 			r.append("\n");
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/lib/Config.java b/org.eclipse.jgit/src/org/eclipse/jgit/lib/Config.java
index 0e01cca99b..b666f21d0b 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/lib/Config.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/lib/Config.java
@@ -51,7 +51,7 @@
 
 package org.eclipse.jgit.lib;
 
-import static org.eclipse.jgit.lib.Constants.CHARSET;
+import static java.nio.charset.StandardCharsets.UTF_8;
 
 import java.text.MessageFormat;
 import java.util.ArrayList;
@@ -1168,7 +1168,7 @@ public class Config {
 
 		String decoded;
 		if (isUtf8(bytes)) {
-			decoded = RawParseUtils.decode(CHARSET, bytes, 3, bytes.length);
+			decoded = RawParseUtils.decode(UTF_8, bytes, 3, bytes.length);
 		} else {
 			decoded = RawParseUtils.decode(bytes);
 		}
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/lib/Constants.java b/org.eclipse.jgit/src/org/eclipse/jgit/lib/Constants.java
index 9a4a3a2a01..f02e95a3d2 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/lib/Constants.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/lib/Constants.java
@@ -227,7 +227,13 @@ public final class Constants {
 	 */
 	public static final byte[] PACK_SIGNATURE = { 'P', 'A', 'C', 'K' };
 
-	/** Native character encoding for commit messages, file names... */
+	/**
+	 * Native character encoding for commit messages, file names...
+	 *
+	 * @deprecated Use {@link java.nio.charset.StandardCharsets#UTF_8} directly
+	 *             instead.
+	 **/
+	@Deprecated
 	public static final Charset CHARSET;
 
 	/** Native character encoding for commit messages, file names... */
@@ -638,7 +644,7 @@ public final class Constants {
 	 * @see #CHARACTER_ENCODING
 	 */
 	public static byte[] encode(String str) {
-		final ByteBuffer bb = Constants.CHARSET.encode(str);
+		final ByteBuffer bb = UTF_8.encode(str);
 		final int len = bb.limit();
 		if (bb.hasArray() && bb.arrayOffset() == 0) {
 			final byte[] arr = bb.array();
@@ -655,7 +661,7 @@ public final class Constants {
 		if (OBJECT_ID_LENGTH != newMessageDigest().getDigestLength())
 			throw new LinkageError(JGitText.get().incorrectOBJECT_ID_LENGTH);
 		CHARSET = UTF_8;
-		CHARACTER_ENCODING = CHARSET.name();
+		CHARACTER_ENCODING = UTF_8.name();
 	}
 
 	/** name of the file containing the commit msg for a merge commit */
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/lib/RebaseTodoFile.java b/org.eclipse.jgit/src/org/eclipse/jgit/lib/RebaseTodoFile.java
index 38716055b5..06b4b227c8 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/lib/RebaseTodoFile.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/lib/RebaseTodoFile.java
@@ -43,7 +43,7 @@
 
 package org.eclipse.jgit.lib;
 
-import static org.eclipse.jgit.lib.Constants.CHARSET;
+import static java.nio.charset.StandardCharsets.UTF_8;
 
 import java.io.BufferedOutputStream;
 import java.io.File;
@@ -183,7 +183,7 @@ public class RebaseTodoFile {
 			switch (tokenCount) {
 			case 0:
 				String actionToken = new String(buf, tokenBegin,
-						nextSpace - tokenBegin - 1, CHARSET);
+						nextSpace - tokenBegin - 1, UTF_8);
 				tokenBegin = nextSpace;
 				action = RebaseTodoLine.Action.parse(actionToken);
 				if (action == null)
@@ -192,7 +192,7 @@ public class RebaseTodoFile {
 			case 1:
 				nextSpace = RawParseUtils.next(buf, tokenBegin, ' ');
 				String commitToken = new String(buf, tokenBegin,
-						nextSpace - tokenBegin - 1, CHARSET);
+						nextSpace - tokenBegin - 1, UTF_8);
 				tokenBegin = nextSpace;
 				commit = AbbreviatedObjectId.fromString(commitToken);
 				break;
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/lib/TagBuilder.java b/org.eclipse.jgit/src/org/eclipse/jgit/lib/TagBuilder.java
index bd03165805..7669e95acc 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/lib/TagBuilder.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/lib/TagBuilder.java
@@ -45,6 +45,8 @@
 
 package org.eclipse.jgit.lib;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.OutputStreamWriter;
@@ -181,7 +183,7 @@ public class TagBuilder {
 	public byte[] build() {
 		ByteArrayOutputStream os = new ByteArrayOutputStream();
 		try (OutputStreamWriter w = new OutputStreamWriter(os,
-				Constants.CHARSET)) {
+				UTF_8)) {
 			w.write("object "); //$NON-NLS-1$
 			getObjectId().copyTo(w);
 			w.write('\n');
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/lib/TextProgressMonitor.java b/org.eclipse.jgit/src/org/eclipse/jgit/lib/TextProgressMonitor.java
index 2f759e53ca..936ce3dcc8 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/lib/TextProgressMonitor.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/lib/TextProgressMonitor.java
@@ -44,7 +44,7 @@
 
 package org.eclipse.jgit.lib;
 
-import static org.eclipse.jgit.lib.Constants.CHARSET;
+import static java.nio.charset.StandardCharsets.UTF_8;
 
 import java.io.IOException;
 import java.io.OutputStreamWriter;
@@ -63,7 +63,7 @@ public class TextProgressMonitor extends BatchingProgressMonitor {
 	 * Initialize a new progress monitor.
 	 */
 	public TextProgressMonitor() {
-		this(new PrintWriter(new OutputStreamWriter(System.err, CHARSET)));
+		this(new PrintWriter(new OutputStreamWriter(System.err, UTF_8)));
 	}
 
 	/**
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/patch/FileHeader.java b/org.eclipse.jgit/src/org/eclipse/jgit/patch/FileHeader.java
index d0a5216e1e..1f4beb017f 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/patch/FileHeader.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/patch/FileHeader.java
@@ -43,6 +43,7 @@
 
 package org.eclipse.jgit.patch;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
 import static org.eclipse.jgit.lib.Constants.encodeASCII;
 import static org.eclipse.jgit.util.RawParseUtils.decode;
 import static org.eclipse.jgit.util.RawParseUtils.decodeNoFallback;
@@ -63,7 +64,6 @@ import org.eclipse.jgit.diff.DiffEntry;
 import org.eclipse.jgit.diff.EditList;
 import org.eclipse.jgit.internal.JGitText;
 import org.eclipse.jgit.lib.AbbreviatedObjectId;
-import org.eclipse.jgit.lib.Constants;
 import org.eclipse.jgit.lib.FileMode;
 import org.eclipse.jgit.util.QuotedString;
 import org.eclipse.jgit.util.RawParseUtils;
@@ -198,7 +198,7 @@ public class FileHeader extends DiffEntry {
 	 * Convert the patch script for this file into a string.
 	 * <p>
 	 * The default character encoding
-	 * ({@link org.eclipse.jgit.lib.Constants#CHARSET}) is assumed for both the
+	 * ({@link java.nio.charset.StandardCharsets#UTF_8}) is assumed for both the
 	 * old and new files.
 	 *
 	 * @return the patch script, as a Unicode string.
@@ -240,8 +240,9 @@ public class FileHeader extends DiffEntry {
 
 		if (trySimpleConversion(charsetGuess)) {
 			Charset cs = charsetGuess != null ? charsetGuess[0] : null;
-			if (cs == null)
-				cs = Constants.CHARSET;
+			if (cs == null) {
+				cs = UTF_8;
+			}
 			try {
 				return decodeNoFallback(cs, buf, startOffset, endOffset);
 			} catch (CharacterCodingException cee) {
@@ -290,8 +291,9 @@ public class FileHeader extends DiffEntry {
 			final String[] r = new String[tmp.length];
 			for (int i = 0; i < tmp.length; i++) {
 				Charset cs = csGuess != null ? csGuess[i] : null;
-				if (cs == null)
-					cs = Constants.CHARSET;
+				if (cs == null) {
+					cs = UTF_8;
+				}
 				r[i] = RawParseUtils.decode(cs, tmp[i].toByteArray());
 			}
 			return r;
@@ -429,7 +431,7 @@ public class FileHeader extends DiffEntry {
 					oldPath = QuotedString.GIT_PATH.dequote(buf, bol, sp - 1);
 					oldPath = p1(oldPath);
 				} else {
-					oldPath = decode(Constants.CHARSET, buf, aStart, sp - 1);
+					oldPath = decode(UTF_8, buf, aStart, sp - 1);
 				}
 				newPath = oldPath;
 				return eol;
@@ -572,7 +574,7 @@ public class FileHeader extends DiffEntry {
 				tab--;
 			if (ptr == tab)
 				tab = end;
-			r = decode(Constants.CHARSET, buf, ptr, tab - 1);
+			r = decode(UTF_8, buf, ptr, tab - 1);
 		}
 
 		if (r.equals(DEV_NULL))
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/patch/FormatError.java b/org.eclipse.jgit/src/org/eclipse/jgit/patch/FormatError.java
index 1dd24d732e..10ea778343 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/patch/FormatError.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/patch/FormatError.java
@@ -43,9 +43,10 @@
 
 package org.eclipse.jgit.patch;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 import java.util.Locale;
 
-import org.eclipse.jgit.lib.Constants;
 import org.eclipse.jgit.util.RawParseUtils;
 
 /**
@@ -120,7 +121,7 @@ public class FormatError {
 	 */
 	public String getLineText() {
 		final int eol = RawParseUtils.nextLF(buf, offset);
-		return RawParseUtils.decode(Constants.CHARSET, buf, offset, eol);
+		return RawParseUtils.decode(UTF_8, buf, offset, eol);
 	}
 
 	/** {@inheritDoc} */
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/RevCommit.java b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/RevCommit.java
index 3de442afb6..5bd5dd6368 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/RevCommit.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/RevCommit.java
@@ -44,7 +44,7 @@
 
 package org.eclipse.jgit.revwalk;
 
-import static org.eclipse.jgit.lib.Constants.CHARSET;
+import static java.nio.charset.StandardCharsets.UTF_8;
 
 import java.io.IOException;
 import java.nio.charset.Charset;
@@ -541,7 +541,7 @@ public class RevCommit extends RevObject {
 		try {
 			return getEncoding();
 		} catch (IllegalCharsetNameException | UnsupportedCharsetException e) {
-			return CHARSET;
+			return UTF_8;
 		}
 	}
 
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/RevTag.java b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/RevTag.java
index 0050bac0ae..32e7adfb0c 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/RevTag.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/revwalk/RevTag.java
@@ -45,7 +45,7 @@
 
 package org.eclipse.jgit.revwalk;
 
-import static org.eclipse.jgit.lib.Constants.CHARSET;
+import static java.nio.charset.StandardCharsets.UTF_8;
 
 import java.io.IOException;
 import java.nio.charset.Charset;
@@ -169,7 +169,7 @@ public class RevTag extends RevObject {
 
 		int p = pos.value += 4; // "tag "
 		final int nameEnd = RawParseUtils.nextLF(rawTag, p) - 1;
-		tagName = RawParseUtils.decode(CHARSET, rawTag, p, nameEnd);
+		tagName = RawParseUtils.decode(UTF_8, rawTag, p, nameEnd);
 
 		if (walk.isRetainBody())
 			buffer = rawTag;
@@ -257,7 +257,7 @@ public class RevTag extends RevObject {
 		try {
 			return RawParseUtils.parseEncoding(buffer);
 		} catch (IllegalCharsetNameException | UnsupportedCharsetException e) {
-			return CHARSET;
+			return UTF_8;
 		}
 	}
 
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/storage/file/FileBasedConfig.java b/org.eclipse.jgit/src/org/eclipse/jgit/storage/file/FileBasedConfig.java
index 4b272ba7a4..93b3baa61f 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/storage/file/FileBasedConfig.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/storage/file/FileBasedConfig.java
@@ -49,7 +49,7 @@
 
 package org.eclipse.jgit.storage.file;
 
-import static org.eclipse.jgit.lib.Constants.CHARSET;
+import static java.nio.charset.StandardCharsets.UTF_8;
 
 import java.io.ByteArrayOutputStream;
 import java.io.File;
@@ -166,7 +166,7 @@ public class FileBasedConfig extends StoredConfig {
 				} else {
 					final String decoded;
 					if (isUtf8(in)) {
-						decoded = RawParseUtils.decode(CHARSET,
+						decoded = RawParseUtils.decode(UTF_8,
 								in, 3, in.length);
 						utf8Bom = true;
 					} else {
@@ -224,7 +224,7 @@ public class FileBasedConfig extends StoredConfig {
 			bos.write(0xEF);
 			bos.write(0xBB);
 			bos.write(0xBF);
-			bos.write(text.getBytes(CHARSET));
+			bos.write(text.getBytes(UTF_8));
 			out = bos.toByteArray();
 		} else {
 			out = Constants.encode(text);
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/AmazonS3.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/AmazonS3.java
index a0fc57ca1f..f6ec4b90eb 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/AmazonS3.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/AmazonS3.java
@@ -43,7 +43,7 @@
 
 package org.eclipse.jgit.transport;
 
-import static org.eclipse.jgit.lib.Constants.CHARSET;
+import static java.nio.charset.StandardCharsets.UTF_8;
 
 import java.io.ByteArrayOutputStream;
 import java.io.File;
@@ -635,7 +635,7 @@ public class AmazonS3 {
 		try {
 			final Mac m = Mac.getInstance(HMAC);
 			m.init(privateKey);
-			sec = Base64.encodeBytes(m.doFinal(s.toString().getBytes(CHARSET)));
+			sec = Base64.encodeBytes(m.doFinal(s.toString().getBytes(UTF_8)));
 		} catch (NoSuchAlgorithmException e) {
 			throw new IOException(MessageFormat.format(JGitText.get().noHMACsupport, HMAC, e.getMessage()));
 		} catch (InvalidKeyException e) {
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/BundleFetchConnection.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/BundleFetchConnection.java
index 449f529447..4b20f6c8b0 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/BundleFetchConnection.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/BundleFetchConnection.java
@@ -47,6 +47,8 @@
 
 package org.eclipse.jgit.transport;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 import java.io.BufferedInputStream;
 import java.io.IOException;
 import java.io.InputStream;
@@ -66,7 +68,6 @@ import org.eclipse.jgit.errors.PackProtocolException;
 import org.eclipse.jgit.errors.TransportException;
 import org.eclipse.jgit.internal.JGitText;
 import org.eclipse.jgit.internal.storage.file.PackLock;
-import org.eclipse.jgit.lib.Constants;
 import org.eclipse.jgit.lib.NullProgressMonitor;
 import org.eclipse.jgit.lib.ObjectId;
 import org.eclipse.jgit.lib.ObjectIdRef;
@@ -173,7 +174,7 @@ class BundleFetchConnection extends BaseFetchConnection {
 				IO.skipFully(bin, 1);
 				done = true;
 			}
-			line.append(RawParseUtils.decode(Constants.CHARSET, hdrbuf, 0, lf));
+			line.append(RawParseUtils.decode(UTF_8, hdrbuf, 0, lf));
 		}
 		return line.toString();
 	}
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/BundleWriter.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/BundleWriter.java
index f2a261bbe6..56aaede80d 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/BundleWriter.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/BundleWriter.java
@@ -43,6 +43,8 @@
 
 package org.eclipse.jgit.transport;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 import java.io.IOException;
 import java.io.OutputStream;
 import java.io.OutputStreamWriter;
@@ -231,7 +233,7 @@ public class BundleWriter {
 				packWriter.setTagTargets(tagTargets);
 			packWriter.preparePack(monitor, inc, exc);
 
-			final Writer w = new OutputStreamWriter(os, Constants.CHARSET);
+			final Writer w = new OutputStreamWriter(os, UTF_8);
 			w.write(TransportBundle.V2_BUNDLE_SIGNATURE);
 			w.write('\n');
 
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/HMACSHA1NonceGenerator.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/HMACSHA1NonceGenerator.java
index 1415334c63..6c26b7026a 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/HMACSHA1NonceGenerator.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/HMACSHA1NonceGenerator.java
@@ -43,7 +43,7 @@
 package org.eclipse.jgit.transport;
 
 import static java.nio.charset.StandardCharsets.ISO_8859_1;
-import static org.eclipse.jgit.lib.Constants.CHARSET;
+import static java.nio.charset.StandardCharsets.UTF_8;
 
 import java.io.File;
 import java.security.InvalidKeyException;
@@ -102,7 +102,7 @@ public class HMACSHA1NonceGenerator implements NonceGenerator {
 		}
 
 		String input = path + ":" + String.valueOf(timestamp); //$NON-NLS-1$
-		byte[] rawHmac = mac.doFinal(input.getBytes(CHARSET));
+		byte[] rawHmac = mac.doFinal(input.getBytes(UTF_8));
 		return Long.toString(timestamp) + "-" + toHex(rawHmac); //$NON-NLS-1$
 	}
 
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/HttpAuthMethod.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/HttpAuthMethod.java
index fb03190b02..69745eb310 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/HttpAuthMethod.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/HttpAuthMethod.java
@@ -43,7 +43,7 @@
 
 package org.eclipse.jgit.transport;
 
-import static org.eclipse.jgit.lib.Constants.CHARSET;
+import static java.nio.charset.StandardCharsets.UTF_8;
 import static org.eclipse.jgit.util.HttpSupport.HDR_AUTHORIZATION;
 import static org.eclipse.jgit.util.HttpSupport.HDR_WWW_AUTHENTICATE;
 
@@ -315,7 +315,7 @@ abstract class HttpAuthMethod {
 		@Override
 		void configureRequest(HttpConnection conn) throws IOException {
 			String ident = user + ":" + pass; //$NON-NLS-1$
-			String enc = Base64.encodeBytes(ident.getBytes(CHARSET));
+			String enc = Base64.encodeBytes(ident.getBytes(UTF_8));
 			conn.setRequestProperty(HDR_AUTHORIZATION, type.getSchemeName()
 					+ " " + enc); //$NON-NLS-1$
 		}
@@ -430,15 +430,15 @@ abstract class HttpAuthMethod {
 
 		private static String H(String data) {
 			MessageDigest md = newMD5();
-			md.update(data.getBytes(CHARSET));
+			md.update(data.getBytes(UTF_8));
 			return LHEX(md.digest());
 		}
 
 		private static String KD(String secret, String data) {
 			MessageDigest md = newMD5();
-			md.update(secret.getBytes(CHARSET));
+			md.update(secret.getBytes(UTF_8));
 			md.update((byte) ':');
-			md.update(data.getBytes(CHARSET));
+			md.update(data.getBytes(UTF_8));
 			return LHEX(md.digest());
 		}
 
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/PacketLineIn.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/PacketLineIn.java
index cc556f8af6..c6e19d5762 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/PacketLineIn.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/PacketLineIn.java
@@ -45,13 +45,14 @@
 
 package org.eclipse.jgit.transport;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 import java.io.IOException;
 import java.io.InputStream;
 import java.text.MessageFormat;
 
 import org.eclipse.jgit.errors.PackProtocolException;
 import org.eclipse.jgit.internal.JGitText;
-import org.eclipse.jgit.lib.Constants;
 import org.eclipse.jgit.lib.MutableObjectId;
 import org.eclipse.jgit.util.IO;
 import org.eclipse.jgit.util.RawParseUtils;
@@ -186,7 +187,7 @@ public class PacketLineIn {
 		if (raw[len - 1] == '\n')
 			len--;
 
-		String s = RawParseUtils.decode(Constants.CHARSET, raw, 0, len);
+		String s = RawParseUtils.decode(UTF_8, raw, 0, len);
 		log.debug("git< " + s); //$NON-NLS-1$
 		return s;
 	}
@@ -218,7 +219,7 @@ public class PacketLineIn {
 
 		IO.readFully(in, raw, 0, len);
 
-		String s = RawParseUtils.decode(Constants.CHARSET, raw, 0, len);
+		String s = RawParseUtils.decode(UTF_8, raw, 0, len);
 		log.debug("git< " + s); //$NON-NLS-1$
 		return s;
 	}
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/PacketLineOut.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/PacketLineOut.java
index a26d1d77d6..e9400919a8 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/PacketLineOut.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/PacketLineOut.java
@@ -45,6 +45,8 @@
 
 package org.eclipse.jgit.transport;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 import java.io.IOException;
 import java.io.OutputStream;
 
@@ -141,7 +143,7 @@ public class PacketLineOut {
 		out.write(lenbuffer, 0, 4);
 		out.write(buf, pos, len);
 		if (log.isDebugEnabled()) {
-			String s = RawParseUtils.decode(Constants.CHARSET, buf, pos, len);
+			String s = RawParseUtils.decode(UTF_8, buf, pos, len);
 			log.debug("git> " + s); //$NON-NLS-1$
 		}
 	}
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/ProgressSpinner.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/ProgressSpinner.java
index 2364434b0f..41af8078c8 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/ProgressSpinner.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/ProgressSpinner.java
@@ -43,7 +43,7 @@
 
 package org.eclipse.jgit.transport;
 
-import static org.eclipse.jgit.lib.Constants.CHARSET;
+import static java.nio.charset.StandardCharsets.UTF_8;
 
 import java.io.IOException;
 import java.io.OutputStream;
@@ -141,7 +141,7 @@ public class ProgressSpinner {
 	private void write(String s) {
 		if (write) {
 			try {
-				out.write(s.getBytes(CHARSET));
+				out.write(s.getBytes(UTF_8));
 				out.flush();
 			} catch (IOException e) {
 				write = false;
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/PushCertificateIdent.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/PushCertificateIdent.java
index 178c80d22e..f9fddbe889 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/PushCertificateIdent.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/PushCertificateIdent.java
@@ -43,7 +43,7 @@
 
 package org.eclipse.jgit.transport;
 
-import static org.eclipse.jgit.lib.Constants.CHARSET;
+import static java.nio.charset.StandardCharsets.UTF_8;
 import static org.eclipse.jgit.util.RawParseUtils.lastIndexOfTrim;
 
 import java.text.SimpleDateFormat;
@@ -95,7 +95,7 @@ public class PushCertificateIdent {
 	 */
 	public static PushCertificateIdent parse(String str) {
 		MutableInteger p = new MutableInteger();
-		byte[] raw = str.getBytes(CHARSET);
+		byte[] raw = str.getBytes(UTF_8);
 		int tzBegin = raw.length - 1;
 		tzBegin = lastIndexOfTrim(raw, ' ', tzBegin);
 		if (tzBegin < 0 || raw[tzBegin] != ' ') {
@@ -129,7 +129,7 @@ public class PushCertificateIdent {
 				idEnd = raw.length;
 			}
 		}
-		String id = new String(raw, 0, idEnd, CHARSET);
+		String id = new String(raw, 0, idEnd, UTF_8);
 
 		return new PushCertificateIdent(str, id, when * 1000L, tz);
 	}
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/PushCertificateStore.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/PushCertificateStore.java
index 7f5a3408e3..aeca63500a 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/PushCertificateStore.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/PushCertificateStore.java
@@ -43,7 +43,7 @@
 
 package org.eclipse.jgit.transport;
 
-import static org.eclipse.jgit.lib.Constants.CHARSET;
+import static java.nio.charset.StandardCharsets.UTF_8;
 import static org.eclipse.jgit.lib.Constants.OBJ_BLOB;
 import static org.eclipse.jgit.lib.Constants.OBJ_COMMIT;
 import static org.eclipse.jgit.lib.FileMode.TYPE_FILE;
@@ -292,7 +292,8 @@ public class PushCertificateStore implements AutoCloseable {
 		ObjectLoader loader =
 				tw.getObjectReader().open(tw.getObjectId(0), OBJ_BLOB);
 		try (InputStream in = loader.openStream();
-				Reader r = new BufferedReader(new InputStreamReader(in, CHARSET))) {
+				Reader r = new BufferedReader(
+						new InputStreamReader(in, UTF_8))) {
 			return PushCertificateParser.fromReader(r);
 		}
 	}
@@ -473,7 +474,7 @@ public class PushCertificateStore implements AutoCloseable {
 
 		DirCacheEditor editor = dc.editor();
 		String certText = pc.cert.toText() + pc.cert.getSignature();
-		final ObjectId certId = inserter.insert(OBJ_BLOB, certText.getBytes(CHARSET));
+		final ObjectId certId = inserter.insert(OBJ_BLOB, certText.getBytes(UTF_8));
 		boolean any = false;
 		for (ReceiveCommand cmd : pc.cert.getCommands()) {
 			if (byRef != null && !commandsEqual(cmd, byRef.get(cmd.getRefName()))) {
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/RefAdvertiser.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/RefAdvertiser.java
index dc1871b729..4662435ea7 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/RefAdvertiser.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/RefAdvertiser.java
@@ -43,7 +43,7 @@
 
 package org.eclipse.jgit.transport;
 
-import static org.eclipse.jgit.lib.Constants.CHARSET;
+import static java.nio.charset.StandardCharsets.UTF_8;
 import static org.eclipse.jgit.lib.Constants.OBJECT_ID_STRING_LENGTH;
 import static org.eclipse.jgit.transport.GitProtocolConstants.OPTION_SYMREF;
 
@@ -74,7 +74,7 @@ import org.eclipse.jgit.lib.Repository;
 public abstract class RefAdvertiser {
 	/** Advertiser which frames lines in a {@link PacketLineOut} format. */
 	public static class PacketLineOutRefAdvertiser extends RefAdvertiser {
-		private final CharsetEncoder utf8 = CHARSET.newEncoder();
+		private final CharsetEncoder utf8 = UTF_8.newEncoder();
 		private final PacketLineOut pckOut;
 
 		private byte[] binArr = new byte[256];
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/SideBandInputStream.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/SideBandInputStream.java
index 3100cb444a..90600cbb98 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/SideBandInputStream.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/SideBandInputStream.java
@@ -44,6 +44,7 @@
 
 package org.eclipse.jgit.transport;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
 import static org.eclipse.jgit.transport.SideBandOutputStream.HDR_SIZE;
 
 import java.io.IOException;
@@ -57,7 +58,6 @@ import java.util.regex.Pattern;
 import org.eclipse.jgit.errors.PackProtocolException;
 import org.eclipse.jgit.errors.TransportException;
 import org.eclipse.jgit.internal.JGitText;
-import org.eclipse.jgit.lib.Constants;
 import org.eclipse.jgit.lib.ProgressMonitor;
 import org.eclipse.jgit.util.IO;
 import org.eclipse.jgit.util.RawParseUtils;
@@ -257,6 +257,6 @@ public class SideBandInputStream extends InputStream {
 	private String readString(int len) throws IOException {
 		final byte[] raw = new byte[len];
 		IO.readFully(rawIn, raw, 0, len);
-		return RawParseUtils.decode(Constants.CHARSET, raw, 0, len);
+		return RawParseUtils.decode(UTF_8, raw, 0, len);
 	}
 }
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/Transport.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/Transport.java
index d342ef46df..621c2ea56c 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/Transport.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/Transport.java
@@ -46,7 +46,7 @@
 
 package org.eclipse.jgit.transport;
 
-import static org.eclipse.jgit.lib.Constants.CHARSET;
+import static java.nio.charset.StandardCharsets.UTF_8;
 
 import java.io.BufferedReader;
 import java.io.IOException;
@@ -144,7 +144,7 @@ public abstract class Transport implements AutoCloseable {
 
 	private static void scan(ClassLoader ldr, URL url) {
 		try (BufferedReader br = new BufferedReader(
-				new InputStreamReader(url.openStream(), CHARSET))) {
+				new InputStreamReader(url.openStream(), UTF_8))) {
 			String line;
 			while ((line = br.readLine()) != null) {
 				line = line.trim();
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/TransportHttp.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/TransportHttp.java
index ee64a87f76..8b41ab0466 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/TransportHttp.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/TransportHttp.java
@@ -46,6 +46,7 @@
 
 package org.eclipse.jgit.transport;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
 import static org.eclipse.jgit.lib.Constants.HEAD;
 import static org.eclipse.jgit.util.HttpSupport.ENCODING_GZIP;
 import static org.eclipse.jgit.util.HttpSupport.ENCODING_X_GZIP;
@@ -426,7 +427,7 @@ public class TransportHttp extends HttpTransport implements WalkTransport,
 	}
 
 	private BufferedReader toBufferedReader(InputStream in) {
-		return new BufferedReader(new InputStreamReader(in, Constants.CHARSET));
+		return new BufferedReader(new InputStreamReader(in, UTF_8));
 	}
 
 	/** {@inheritDoc} */
@@ -952,7 +953,7 @@ public class TransportHttp extends HttpTransport implements WalkTransport,
 			// Line oriented readable content is likely to compress well.
 			// Request gzip encoding.
 			InputStream is = open(path, AcceptEncoding.GZIP).in;
-			return new BufferedReader(new InputStreamReader(is, Constants.CHARSET));
+			return new BufferedReader(new InputStreamReader(is, UTF_8));
 		}
 
 		@Override
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/transport/WalkRemoteObjectDatabase.java b/org.eclipse.jgit/src/org/eclipse/jgit/transport/WalkRemoteObjectDatabase.java
index aa71c9445a..6d4df4fbad 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/transport/WalkRemoteObjectDatabase.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/transport/WalkRemoteObjectDatabase.java
@@ -43,6 +43,8 @@
 
 package org.eclipse.jgit.transport;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 import java.io.BufferedReader;
 import java.io.ByteArrayOutputStream;
 import java.io.FileNotFoundException;
@@ -363,7 +365,7 @@ abstract class WalkRemoteObjectDatabase {
 	 */
 	BufferedReader openReader(String path) throws IOException {
 		final InputStream is = open(path).in;
-		return new BufferedReader(new InputStreamReader(is, Constants.CHARSET));
+		return new BufferedReader(new InputStreamReader(is, UTF_8));
 	}
 
 	/**
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/treewalk/AbstractTreeIterator.java b/org.eclipse.jgit/src/org/eclipse/jgit/treewalk/AbstractTreeIterator.java
index 470ed02841..335abe1b5b 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/treewalk/AbstractTreeIterator.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/treewalk/AbstractTreeIterator.java
@@ -45,6 +45,8 @@
 
 package org.eclipse.jgit.treewalk;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 import java.io.IOException;
 import java.nio.ByteBuffer;
 import java.nio.CharBuffer;
@@ -182,7 +184,7 @@ public abstract class AbstractTreeIterator {
 		if (prefix != null && prefix.length() > 0) {
 			final ByteBuffer b;
 
-			b = Constants.CHARSET.encode(CharBuffer.wrap(prefix));
+			b = UTF_8.encode(CharBuffer.wrap(prefix));
 			pathLen = b.limit();
 			path = new byte[Math.max(DEFAULT_PATH_SIZE, pathLen + 1)];
 			b.get(path, 0, pathLen);
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/treewalk/TreeWalk.java b/org.eclipse.jgit/src/org/eclipse/jgit/treewalk/TreeWalk.java
index d500aae681..82675859dd 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/treewalk/TreeWalk.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/treewalk/TreeWalk.java
@@ -44,6 +44,8 @@
 
 package org.eclipse.jgit.treewalk;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 import java.io.IOException;
 import java.util.HashMap;
 import java.util.Map;
@@ -1045,7 +1047,7 @@ public class TreeWalk implements AutoCloseable, AttributesProvider {
 		final AbstractTreeIterator t = currentHead;
 		final int off = t.pathOffset;
 		final int end = t.pathLen;
-		return RawParseUtils.decode(Constants.CHARSET, t.path, off, end);
+		return RawParseUtils.decode(UTF_8, t.path, off, end);
 	}
 
 	/**
@@ -1378,11 +1380,11 @@ public class TreeWalk implements AutoCloseable, AttributesProvider {
 	}
 
 	static String pathOf(AbstractTreeIterator t) {
-		return RawParseUtils.decode(Constants.CHARSET, t.path, 0, t.pathLen);
+		return RawParseUtils.decode(UTF_8, t.path, 0, t.pathLen);
 	}
 
 	static String pathOf(byte[] buf, int pos, int end) {
-		return RawParseUtils.decode(Constants.CHARSET, buf, pos, end);
+		return RawParseUtils.decode(UTF_8, buf, pos, end);
 	}
 
 	/**
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/treewalk/WorkingTreeIterator.java b/org.eclipse.jgit/src/org/eclipse/jgit/treewalk/WorkingTreeIterator.java
index 179fd46791..7c6bfb9d63 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/treewalk/WorkingTreeIterator.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/treewalk/WorkingTreeIterator.java
@@ -46,6 +46,8 @@
 
 package org.eclipse.jgit.treewalk;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 import java.io.ByteArrayInputStream;
 import java.io.File;
 import java.io.FileInputStream;
@@ -1413,7 +1415,7 @@ public abstract class WorkingTreeIterator extends AbstractTreeIterator {
 
 		IteratorState(WorkingTreeOptions options) {
 			this.options = options;
-			this.nameEncoder = Constants.CHARSET.newEncoder();
+			this.nameEncoder = UTF_8.newEncoder();
 		}
 
 		void initializeReadBuffer() {
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/util/Base64.java b/org.eclipse.jgit/src/org/eclipse/jgit/util/Base64.java
index 442f0793fb..69f8547452 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/util/Base64.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/util/Base64.java
@@ -6,7 +6,7 @@
 
 package org.eclipse.jgit.util;
 
-import static org.eclipse.jgit.lib.Constants.CHARSET;
+import static java.nio.charset.StandardCharsets.UTF_8;
 
 import java.text.MessageFormat;
 import java.util.Arrays;
@@ -54,7 +54,7 @@ public class Base64 {
 				+ "abcdefghijklmnopqrstuvwxyz" // //$NON-NLS-1$
 				+ "0123456789" // //$NON-NLS-1$
 				+ "+/" // //$NON-NLS-1$
-		).getBytes(CHARSET);
+		).getBytes(UTF_8);
 
 		DEC = new byte[128];
 		Arrays.fill(DEC, INVALID_DEC);
@@ -177,7 +177,7 @@ public class Base64 {
 			e += 4;
 		}
 
-		return new String(outBuff, 0, e, CHARSET);
+		return new String(outBuff, 0, e, UTF_8);
 	}
 
 	/**
@@ -293,7 +293,7 @@ public class Base64 {
 	 * @return the decoded data
 	 */
 	public static byte[] decode(String s) {
-		byte[] bytes = s.getBytes(CHARSET);
+		byte[] bytes = s.getBytes(UTF_8);
 		return decode(bytes, 0, bytes.length);
 	}
 }
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/util/FS_Win32_Cygwin.java b/org.eclipse.jgit/src/org/eclipse/jgit/util/FS_Win32_Cygwin.java
index 3393fbfd1d..e5c8d9d398 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/util/FS_Win32_Cygwin.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/util/FS_Win32_Cygwin.java
@@ -43,7 +43,7 @@
 
 package org.eclipse.jgit.util;
 
-import static org.eclipse.jgit.lib.Constants.CHARSET;
+import static java.nio.charset.StandardCharsets.UTF_8;
 
 import java.io.File;
 import java.io.PrintStream;
@@ -126,7 +126,7 @@ public class FS_Win32_Cygwin extends FS_Win32 {
 			try {
 				w = readPipe(dir, //
 					new String[] { cygpath, "--windows", "--absolute", pn }, // //$NON-NLS-1$ //$NON-NLS-2$
-					CHARSET.name());
+					UTF_8.name());
 			} catch (CommandFailedException e) {
 				LOG.warn(e.getMessage());
 				return null;
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/util/FileUtils.java b/org.eclipse.jgit/src/org/eclipse/jgit/util/FileUtils.java
index 2f547c15b0..ecfd31647d 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/util/FileUtils.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/util/FileUtils.java
@@ -45,6 +45,8 @@
 
 package org.eclipse.jgit.util;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 import java.io.File;
 import java.io.IOException;
 import java.nio.file.AtomicMoveNotSupportedException;
@@ -712,7 +714,7 @@ public class FileUtils {
 		Path nioPath = toPath(file);
 		if (Files.isSymbolicLink(nioPath))
 			return Files.readSymbolicLink(nioPath).toString()
-					.getBytes(Constants.CHARSET).length;
+					.getBytes(UTF_8).length;
 		return Files.size(nioPath);
 	}
 
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/util/QuotedString.java b/org.eclipse.jgit/src/org/eclipse/jgit/util/QuotedString.java
index 4d58d0614a..a55cad3705 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/util/QuotedString.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/util/QuotedString.java
@@ -43,6 +43,8 @@
 
 package org.eclipse.jgit.util;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 import java.util.Arrays;
 
 import org.eclipse.jgit.lib.Constants;
@@ -181,7 +183,7 @@ public abstract class QuotedString {
 					continue;
 				}
 			}
-			return RawParseUtils.decode(Constants.CHARSET, r, 0, rPtr);
+			return RawParseUtils.decode(UTF_8, r, 0, rPtr);
 		}
 	}
 
@@ -294,7 +296,7 @@ public abstract class QuotedString {
 		public String dequote(byte[] in, int inPtr, int inEnd) {
 			if (2 <= inEnd - inPtr && in[inPtr] == '"' && in[inEnd - 1] == '"')
 				return dq(in, inPtr + 1, inEnd - 1);
-			return RawParseUtils.decode(Constants.CHARSET, in, inPtr, inEnd);
+			return RawParseUtils.decode(UTF_8, in, inPtr, inEnd);
 		}
 
 		private static String dq(byte[] in, int inPtr, int inEnd) {
@@ -370,7 +372,7 @@ public abstract class QuotedString {
 				}
 			}
 
-			return RawParseUtils.decode(Constants.CHARSET, r, 0, rPtr);
+			return RawParseUtils.decode(UTF_8, r, 0, rPtr);
 		}
 
 		private GitPathStyle() {
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/util/io/MessageWriter.java b/org.eclipse.jgit/src/org/eclipse/jgit/util/io/MessageWriter.java
index 94e5ef3d74..12d809b513 100644
--- a/org.eclipse.jgit/src/org/eclipse/jgit/util/io/MessageWriter.java
+++ b/org.eclipse.jgit/src/org/eclipse/jgit/util/io/MessageWriter.java
@@ -43,13 +43,14 @@
 
 package org.eclipse.jgit.util.io;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.io.OutputStream;
 import java.io.OutputStreamWriter;
 import java.io.Writer;
 
-import org.eclipse.jgit.lib.Constants;
 import org.eclipse.jgit.util.RawParseUtils;
 
 /**
@@ -80,7 +81,7 @@ public class MessageWriter extends Writer {
 	 */
 	public MessageWriter() {
 		buf = new ByteArrayOutputStream();
-		enc = new OutputStreamWriter(getRawStream(), Constants.CHARSET);
+		enc = new OutputStreamWriter(getRawStream(), UTF_8);
 	}
 
 	/** {@inheritDoc} */