Learning Java Language Foundations

Java design goals and WORA concept

Java was designed with the goal of portability across different hardware and operating systems. This is captured by the “write once, run anywhere” (WORA) concept: Java source code is compiled into platform-independent bytecode, which can run on any system that provides a compatible Java Virtual Machine (JVM), without needing to recompile for each platform. In practice, WORA relies on the JVM and the Java runtime environment to interpret or compile the bytecode for the underlying architecture. As a result, Java applications can be distributed as bytecode (e.g., in class files or archives) and executed consistently across platforms that support the Java platform, making development and deployment more uniform than traditional native compilation approaches.

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Java compilation to bytecode

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