JVM Tutorials - Herong's Tutorial Examples

∟JRockit JVM 8.0 by BEA Systems

∟Installing JRockit JVM 8.0

This section provides a tutorial example on how to download and install JRockit 8.0 on Windows systems.

One of the JRockit developers saw my notes on JRockit 7.0 on the Web, and suggested me to try JRockit 8.0. So I downloaded the evaluation version of JRockit 8.0, and did a couple of quick tests.

To try JRockit 8.0, I went to http://commerce.bea.com/showallversions.jsp?family=WLJR. Then using my registered name and password, I got the download page. There, I selected WebLogic JRockit 8.0 SDK, then Microsoft Windows (32 bit). At the end of download process, I got jrockit-8.0-j2se1.4.1-win32.exe (35,864KB).

The installation process was straight forward by double clicking on the downloaded file. At the end, JRockit was installed at \local\bea\JRockit80_141_32.

To check the installation, I did the following in a command window:

\local\bea\JRockit80_141_32\bin\java -version
java version "1.4.1_01"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1_01)
BEA WebLogic JRockit(R) Virtual Machine (build 8.0-1.4.1_01-win32-CROSIS
-20030124-1058, Native Threads, Generational Concurrent Garbage Collecto
r)

There seems to be a Java compiler interface integrated in JRockit 8.0:

\local\bea\JRockit80_141_32\bin\javac AnyClass.java
error: cannot read: AnyClass.java
1 error

Another difference in 8.0 is that the Management Console server option is changed:

\local\bea\jrockit80_141_32\bin\java -version -Xmanagement
[JRockit] Management Server started on port 7090.
...

Last update: 2003.

Table of Contents

 About This Book

 Download and Install Java SE 1.6 Update 2

 java.lang.Runtime Class - The JVM Instance

 java.lang.System Class - The Operating System

 ClassLoader Class - Class Loaders

 Class Class - Class Reflections

 Sun's JVM - Java HotSpot VM

 JRockit JVM 7.0 by BEA Systems

►JRockit JVM 8.0 by BEA Systems

►Installing JRockit JVM 8.0

 Testing with LongWhile.java

 Testing with LongSleep.java

 Memory Management Rules and Tests

 Garbage Collection Tests

 Stack Overflow Tests

 Thread Testing Program and Result

 StringBuffer Testing Program and Result

 CDS (Class Data Sharing)

 Micro Benchmark Runner and JVM Options

 Micro Benchmark Tests on "int" Operations

 Micro Benchmark Tests on "long" Operations

 Micro Benchmark Tests in JIT Compilation Mode

 Micro Benchmark Tests on "float" and "double" Operations

 References

 PDF Printing Version