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Java Applications

Pure Java applications do not require any code changes to run on Intel-based Macintosh computers. However, Java applications that interface with PowerPC-based native code will not run successfully using Rosetta on Intel-based Macintosh computers.

Specifically, the following must be built as universal binaries:

• JNI libraries built for PowerPC-based Macintosh computers are not loaded using Rosetta because the Java Virtual Machine has already launched without using Rosetta. Java applications fail on Intel-based Macintosh computers when trying to load PowerPC-only binaries.

• Native applications that use the VM Invocation Interface to start a Java Virtual Machine must be built as universal binaries to run on Intel-based Macintosh computers. The Java VM must run natively; attempts by an application running using Rosetta to instantiate a JVM fail.

For more information, see Technical Q &A QA1295: Java on Intel-based Macintosh Computers in the ADC Reference Library.

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