Simple Java Compiler

Simple Java is a lightweight compiler that translates a subset of Java into johnny assembly code. It’s designed as a learning tool to help bridge the gap between high-level programming and low-level machine operations.

Key Features

• Core Functionality:
  Compiles simple Java programs with basic variable declarations, assignments, conditionals, while loops, and static function calls.

• Extended Instructions:
  Includes savi addr and jmpi addr for enhanced memory operations.

• Detailed Logs:
  Generates comprehensive logs during each compilation stage.

Limitations

• Only supports the int data type.
• Does not support negative numbers, decimals, or advanced data types.
• Lacks support for recursion and nested function calls.
• Basic arithmetic (only addition and subtraction) and comparison operators are supported.

Quick Start

• Run the Compiler:
  Double-click SimpleJava-1.2.jar to launch the compiler.

• GUI Tool:
  Use the additional jar file for quickly editing johnny memory files and viewing program outputs.

• Source & Documentation:

  • Source Code: Located in \src\main\java\org\example\simplejava
    • Documentation: Found in the \docs folder

Recommendations

• IDE:
  IntelliJ IDEA or VSCode is recommended for working with the source code.

• JRE:
  Use Java 21 or higher (tested), though it should work with Java 16 as well.

Happy coding and enjoy exploring the compiler!