Sun Java Versions Performance Improvements
Further information: Java version historyApart from the improvements listed here, each Sun's Java version introduced many performance improvements in the Java API.
JDK 1.1.6 : First Just-in-time compilation (Symantec's JIT-compiler)
J2SE 1.2 : Use of a generational collector.
J2SE 1.3 : Just-In-Time compilation by HotSpot.
J2SE 1.4 : See here, for a Sun overview of performance improvements between 1.3 and 1.4 versions.
Java SE 5.0 : Class Data Sharing
Java SE 6 :
- Split bytecode verification
- Escape analysis and lock coarsening
- Register allocation Improvements
Other improvements:
- Java OpenGL Java 2D pipeline speed improvements
- Java 2D performance has also improved significantly in Java 6
See also 'Sun overview of performance improvements between Java 5 and Java 6'.
Read more about this topic: Java Performance
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