Java Performance - Sun Java Versions Performance Improvements

Sun Java Versions Performance Improvements

Further information: Java version history

Apart 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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