Merged patches from Wu Gansha <gansha.wu@intel.com>:

	* gnu/java/io/PlatformHelper.java (INITIAL_MAX_PATH): new constant.
	(toCanonicalForm): Use new constant to optimize StringBuffer usage.
	Return lowercase path when isWindows == true.
        * gnu/java/lang/SystemClassLoader.java (classpath): New static field.
	(pathinfos): Likewise.
	(getSystemResource): Refactored, cache partial result for each path
	item in classpath.
	* gnu/java/net/protocol/file/Handler.java (toExternalForm): New
	method implementation specific to file protocol.
        * gnu/java/net/protocol/http/HttpURLConnection.java
	(buffered_out_stream): New field.
	(connect): Don't set in_stream, wrap out_stream BufferedOutputStream.
	Move sending request and receiveing reesponce to new methods.
	(sendRequest): New method.
	(receiveReply): Likewise.
	(setRequestMethod): Accept "POST".
	(getInputStream): When in_stream == null, call SendRequest() and
	ReceiveReply().
	(getOutputStream): New method.
	* gnu/java/net/protocol/jar/Handler.java (toExternalForm): New
	optimized method.
	* gnu/java/net/protocol/jar/JarURLConnection.java (getContentLength):
	New method.
	* java/net/URL.java (URL): Remove toLowerCase() when calling this().
	* java/net/URLConnection.java (req_props): Made final, set in
	constructor using Hashtable(Map).
	(setRequestProperty): Not synchronized.
	(getRequestProperties): New method.
	* java/net/URLStreamHandler (toExternalForm): Use StringBuffer.

1 files changed, 9 insertions, 1 deletions

diff --git a/gnu/java/net/protocol/jar/Handler.java b/gnu/java/net/protocol/jar/Handler.java
index ff463b6f1..140274905 100644
--- a/gnu/java/net/protocol/jar/Handler.java
+++ b/gnu/java/net/protocol/jar/Handler.java
@@ -150,7 +150,15 @@ toExternalForm(URL url)
 {
   String file = url.getFile();
 
-  return "jar:" + file;
+  // return "jar:" + file;
+  // Performance!!: 
+  //  Do the concatenation mannually to avoid resize StringBuffer's 
+  //  internal buffer.
+  StringBuffer sb = new StringBuffer(file.length() + 5);
+  sb.append("jar:");
+  sb.append(file);
+
+  return sb.toString();
 }