Performance Enhancements
The following lists and describes the performance enhancements
made to the JDK for the 1.1 release.
- Interpreter Loop in Assembly Code on Win32 and Solaris/SPARC
Since portions of the Java VM have been rewritten in assembly language,
the resulting VM now runs up to five times faster on certain operations.
- Non-Continuous Heap Support for Mac
Improved memory usage on Macintosh computers enables Java to run more smoothly with other
applications.
- Monitor Speedups
Synchronized methods enable operations to run more quickly and efficiently.
- Garbage Collection of Classes
This enhancement automatically discards unused classes. Improved overall VM memory usage enables Java
to operate more efficiently, and with less memory.
- AWT Peer Class Re-Write for Win32
To achieve higher performance, AWT peer native classes have been completely rewritten to be hosted
running on top of Win32.
- JAR (Java Archive) bundling of resources for a single HTTP transaction
JAR is a new JDK 1.1 platform-independent file format that aggregates many files into one. Java applets and
their requisite components--such as class files, images and sounds--can be bundled into a compressed
JAR file and downloaded to a browser in a single HTTP transaction to reduce download time. In addition,
applet authors can digitally sign individual entries in a JAR file to authenticate their origin.
Where to Find Documentation
