Fix quality flaws

4 files changed, 6 insertions, 6 deletions

diff --git a/sonar-plugin-api/src/main/java/org/sonar/api/utils/StaxParser.java b/sonar-plugin-api/src/main/java/org/sonar/api/utils/StaxParser.java
index 8c214218206..8cd7322115e 100644
--- a/sonar-plugin-api/src/main/java/org/sonar/api/utils/StaxParser.java
+++ b/sonar-plugin-api/src/main/java/org/sonar/api/utils/StaxParser.java
@@ -191,7 +191,7 @@ public class StaxParser {
       return inputToCheck.skip(n);
     }
 
-    private void checkBufferForISOControlChars(byte[] buffer, int off, int len) {
+    private static void checkBufferForISOControlChars(byte[] buffer, int off, int len) {
       for (int i = off; i < len; i++) {
         char streamChar = (char) buffer[i];
         if (Character.isISOControl(streamChar) && streamChar != '\n') {
diff --git a/sonar-plugin-api/src/main/java/org/sonar/api/utils/command/CommandExecutor.java b/sonar-plugin-api/src/main/java/org/sonar/api/utils/command/CommandExecutor.java
index dfe44fabf42..e1eb3255844 100644
--- a/sonar-plugin-api/src/main/java/org/sonar/api/utils/command/CommandExecutor.java
+++ b/sonar-plugin-api/src/main/java/org/sonar/api/utils/command/CommandExecutor.java
@@ -121,7 +121,7 @@ public class CommandExecutor {
     }
   }
 
-  private void verifyGobbler(Command command, StreamGobbler gobbler, String type) {
+  private static void verifyGobbler(Command command, StreamGobbler gobbler, String type) {
     if (gobbler.getException() != null) {
       throw new CommandException(command, "Error inside " + type + " stream", gobbler.getException());
     }
@@ -140,7 +140,7 @@ public class CommandExecutor {
     return execute(command, new DefaultConsumer(), new DefaultConsumer(), timeoutMilliseconds);
   }
 
-  private void closeStreams(@Nullable Process process) {
+  private static void closeStreams(@Nullable Process process) {
     if (process != null) {
       IOUtils.closeQuietly(process.getInputStream());
       IOUtils.closeQuietly(process.getOutputStream());
@@ -148,7 +148,7 @@ public class CommandExecutor {
     }
   }
 
-  private void waitUntilFinish(@Nullable StreamGobbler thread) {
+  private static void waitUntilFinish(@Nullable StreamGobbler thread) {
     if (thread != null) {
       try {
         thread.join();
diff --git a/sonar-plugin-api/src/main/java/org/sonar/api/utils/text/JsonWriter.java b/sonar-plugin-api/src/main/java/org/sonar/api/utils/text/JsonWriter.java
index ccec2fabb6c..47b90b75852 100644
--- a/sonar-plugin-api/src/main/java/org/sonar/api/utils/text/JsonWriter.java
+++ b/sonar-plugin-api/src/main/java/org/sonar/api/utils/text/JsonWriter.java
@@ -382,7 +382,7 @@ public class JsonWriter {
     }
   }
 
-  private IllegalStateException rethrow(Exception e) {
+  private static IllegalStateException rethrow(Exception e) {
     // stacktrace is not helpful
     throw new WriterException("Fail to write JSON: " + e.getMessage());
   }
diff --git a/sonar-plugin-api/src/main/java/org/sonar/api/utils/text/XmlWriter.java b/sonar-plugin-api/src/main/java/org/sonar/api/utils/text/XmlWriter.java
index 2744d4e01a3..7b8cf46034f 100644
--- a/sonar-plugin-api/src/main/java/org/sonar/api/utils/text/XmlWriter.java
+++ b/sonar-plugin-api/src/main/java/org/sonar/api/utils/text/XmlWriter.java
@@ -176,7 +176,7 @@ public class XmlWriter {
     }
   }
 
-  private IllegalStateException rethrow(XMLStreamException e) {
+  private static IllegalStateException rethrow(XMLStreamException e) {
     // stacktrace is not helpful
     throw new IllegalStateException("Fail to write XML: " + e.getMessage());
   }