the release of Java 2 Platform, Standard Edition (J2SE) version 1.4, a design center for the release of J2SE platform, version 1.4.2 was to improve the performance and scalability of the Java platform.
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the performance and scalability improvements made in the J2SE version 1.4.2 release. This includes the results of various benchmarks to demonstrate improvements in existing APIs as well as an overview of key new technologies included in J2SE for the first time. Version 1.4.2 gives you the infrastructure you need for your application to:
* Utilize machines with larger numbers of CPUs
* Run applications requiring low pause times
* Perform on many new hardware and software platforms
the J2SE platform in version 1.4.2. These include the new throughput and concurrent low-pause garbage collectors, Linux NPTL thread library support, and SSE/SSE2 register support for floating point operations.
Garbage Collection Improvements
In the J2SE platform version 1.4.1 two new garbage collectors were introduced to make a total of four garbage collectors from which to choose. In J2SE platform version 1.4.2 the performance of the new collectors have been improved through algorithmoptimizations and bug fixes, along with documentation updates to educate developers and administrators on what collectors to choose
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