Java compiler

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A Java compiler is a compiler for the programming language Java. The most common form of output from a Java compiler is Java class files containing platform-neutral Java bytecode,[1] but there are also compilers that output optimized native machine code for a particular hardware/operating system combination, most notably the now discontinued GNU Compiler for Java.[2]

Most Java-to-bytecode compilers do virtually no optimization, leaving this until run time to be done by the Java virtual machine (JVM).[citation needed]

The JVM loads the class files and either interprets the bytecode or just-in-time compiles it to machine code and then possibly optimizes it using dynamic compilation.

A standard on how to interact with Java compilers programmatically was specified in JSR 199.[3]

See also[edit]

References[edit]

  1. ^ "The Java Virtual Machine Specification, Java SE 8 Edition, Section 1.2". Retrieved 2021-09-24.
  2. ^ "GCJ - past, present, and future". Retrieved 2021-09-24.
  3. ^ "JSR 199: JavaTM Compiler API". Retrieved 2021-09-24.

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