Remove JRockit LTW support, particularly JRockitAgent

In two places, the documentation now contains this text:

"Since AspectJ 1.9.7, the obsolete Oracle/BEA JRockit agent is no longer
part of AspectJ. JRockit JDK never supported Java versions higher than
1.6. Several JRockit JVM features are now part of HotSpot and tools like
Mission Control available for OpenJDK and Oracle JDK."

The decision to drop JRockit support was made during a discussion
between Alexander Kriegisch and Andy Clement:

Andy Clement wrote on 26 Mar 2021:

> Yes I think so.
>
>
> Alexander Kriegisch wrote on 26 Mar 2021:
>
>> https://en.wikipedia.org/wiki/JRockit
>>
>> Can we get rid of that? AspectJ requires Java 8, JRockit never
>> supported more than Java 6.

Signed-off-by: Alexander Kriegisch <Alexander@Kriegisch.name>

1 files changed, 23 insertions, 56 deletions

diff --git a/tests/ltw/java/net/URLClassLoader.java b/tests/ltw/java/net/URLClassLoader.java
index 770c7f337..ffd9d57d1 100644
--- a/tests/ltw/java/net/URLClassLoader.java
+++ b/tests/ltw/java/net/URLClassLoader.java
@@ -17,9 +17,9 @@ import java.util.zip.ZipEntry;
 import org.aspectj.weaver.loadtime.Aj;
 
 public class URLClassLoader extends SecureClassLoader {
-	
+
 	public final static boolean debug = false;
-	
+
 	private List path = new LinkedList();
 	private Aj agent;
 
@@ -34,7 +34,7 @@ public class URLClassLoader extends SecureClassLoader {
 	public URLClassLoader(URL[] urls) throws IOException {
 		this(urls,null,null);
 	}
-	
+
 	public URLClassLoader(URL[] urls, ClassLoader parent, URLStreamHandlerFactory factory) throws IOException {
 		super(parent);
 		if (debug) System.err.println("> URLClassLoader.URLClassLoader() parent=" + parent);
@@ -52,43 +52,10 @@ public class URLClassLoader extends SecureClassLoader {
 		}
 
 		agent = new Aj();
-		
+
 		if (debug) System.err.println("< URLClassLoader.URLClassLoader() path=" + path);
 	}
-	
-//	public final static boolean debug = false;
-//	
-//	private List path = new LinkedList();
-////	private com.bea.jvm.ClassPreProcessor agent;
-//	private Object agent;
-//	private Method preProcess;
-	
-//	public JRockitClassLoader (URLClassLoader clone) throws Exception {
-//		/* Use extensions loader */
-//		super(clone.getParent());
-//
-//		URL[] urls = clone.getURLs();
-//		for (int i = 0; i < urls.length; i++) {
-//			Object pathElement;
-//			URL url = urls[i];
-//			if (debug) System.err.println("JRockitClassLoader.JRockitClassLoader() url=" + url.getPath());
-//			File file = new File(encode(url.getFile()));
-//			if (debug) System.err.println("JRockitClassLoader.JRockitClassLoader() file" + file);
-//			if (file.isDirectory()) pathElement = file;
-//			else if (file.exists() && file.getName().endsWith(".jar")) pathElement = new JarFile(file);
-//			else throw new RuntimeException(file.getAbsolutePath().toString());
-//			path.add(pathElement);
-//		}
-//		
-//		Class agentClazz = Class.forName("org.aspectj.weaver.loadtime.JRockitAgent",false,this);
-//		Object obj = agentClazz.newInstance();
-//		if (debug) System.err.println("JRockitClassLoader.JRockitClassLoader() obj=" + obj);
-//		this.agent = obj;
-//		byte[] bytes = new byte[] {};
-//		Class[] parameterTypes = new Class[] { java.lang.ClassLoader.class, java.lang.String.class, bytes.getClass() }; 
-//		preProcess = agentClazz.getMethod("preProcess",parameterTypes);
-//	}
-	
+
 	/* Get rid of escaped characters */
 	private String encode (String s) {
 		StringBuffer result = new StringBuffer();
@@ -104,7 +71,7 @@ public class URLClassLoader extends SecureClassLoader {
 		result.append(s);
 		return result.toString();
 	}
-	
+
 	protected Class findClass(String name) throws ClassNotFoundException {
 		if (debug) System.err.println("> URLClassLoader.findClass() name=" + name);
 		Class clazz = null;
@@ -129,7 +96,7 @@ public class URLClassLoader extends SecureClassLoader {
 						ZipEntry entry = jar.getEntry(className);
 						if (entry != null) classBytes = loadBytesFromZipEntry(jar,entry);
 					}
-					
+
 					if (classBytes != null) {
 						clazz = defineClass(name,classBytes);
 					}
@@ -139,7 +106,7 @@ public class URLClassLoader extends SecureClassLoader {
 				}
 			}
 		}
-		
+
 		if (debug) System.err.println("< URLClassLoader.findClass() clazz=" + clazz);
 		if (clazz == null) throw new ClassNotFoundException(name);
 		return clazz;
@@ -160,12 +127,12 @@ public class URLClassLoader extends SecureClassLoader {
 		if (debug) System.err.println("< URLClassLoader.findResource() url=" + url);
 		return url;
 	}
-	
-	
+
+
 	protected Enumeration findResources (String name) throws IOException {
 		if (debug) System.err.println("> URLClassLoader.findResources() name=" + name);
 		Vector urls = new Vector();
-		
+
 		for (Iterator i = path.iterator(); i.hasNext();) {
 			Object pathElement = i.next();
 			if (pathElement instanceof File) {
@@ -182,34 +149,34 @@ public class URLClassLoader extends SecureClassLoader {
 
 					final byte[] bytes = loadBytesFromZipEntry(jar,entry);
 					URLStreamHandler streamHandler = new URLStreamHandler() {
-					
+
 						protected URLConnection openConnection(URL u) throws IOException {
 							URLConnection connection = new URLConnection(u) {
-								
+
 								public void connect() throws IOException {
 								}
 
 								public InputStream getInputStream() throws IOException {
 									return new ByteArrayInputStream(bytes);
 								}
-								
+
 							};
 							return connection;
 					    }
-					
+
 					};
 					URL url = new URL("file",null,0,jar.getName(),streamHandler);
 					urls.add(url);
 				}
 			}
 		}
-		
+
 		Enumeration enu = urls.elements();
-		
+
 		if (debug) System.err.println("< URLClassLoader.findResources() enu=" + enu);
 		return enu;
 	}
-	
+
 	private Class defineClass (String name, byte[] bytes) {
 		if (debug) System.err.println("> URLClassLoader.defineClass() name=" + name);
 //		try {
@@ -226,7 +193,7 @@ public class URLClassLoader extends SecureClassLoader {
 		if (debug) System.err.println("< URLClassLoader.defineClass() name=" + name);
 		return super.defineClass(name,bytes,0,bytes.length);
 	}
-	
+
 	private byte[] loadClassFromFile (String name, File file) throws IOException {
 		if (debug) System.err.println("> URLClassLoader.loadClassFromFile() file=" + file);
 
@@ -240,11 +207,11 @@ public class URLClassLoader extends SecureClassLoader {
 		finally {
 			if (fis != null) fis.close();
 		}
-		
+
 		if (debug) System.err.println("< URLClassLoader.loadClassFromFile() bytes=b[" + bytes.length + "]");
 		return bytes;
 	}
-	
+
 	private byte[] loadBytesFromZipEntry (JarFile jar, ZipEntry entry) throws IOException {
 		if (debug) System.err.println("> URLClassLoader.loadBytesFromZipEntry() entry=" + entry);
 
@@ -258,11 +225,11 @@ public class URLClassLoader extends SecureClassLoader {
 		finally {
 			if (is != null) is.close();
 		}
-		
+
 		if (debug) System.err.println("< URLClassLoader.loadBytesFromZipEntry() bytes=b[" + bytes.length + "]");
 		return bytes;
 	}
-	
+
 	private byte[] readBytes (InputStream is, byte[] bytes) throws IOException {
 		for (int offset = 0; offset < bytes.length;) {
 			int read = is.read(bytes,offset,bytes.length - offset);