Java Decompiler Ollama

This Rust library provides functionality to disassemble Java class files using javap and translate the bytecode to equivalent Java source code using the Ollama API.

Requirements

• Ollama: Ensure that the Ollama API is accessible. By default, the library uses the qwen2.5-coder model, but you can change this by setting the OLLAMA_MODEL environment variable.
• Java Development Kit (JDK): Ensure that javap is available in your environment, as it is used to disassemble the .class files.

Installation

Add the following dependency to your Cargo.toml:

[dependencies]
java_decompiler_ollama = "0.1.0"

Usage

Example: Fibonacci Class

Create a Java class file: Save the following Java code in a file named Fibonacci.java:

public class Fibonacci {
    public static void main(String[] args) {
        int n = 30;
        System.out.println("Fibonacci(" + n + ") = " + fibonacci(n));
    }

    public static int fibonacci(int n) {
        if (n <= 1) {
            return n;
        }
        return fibonacci(n - 1) + fibonacci(n - 2);
    }
}

Compile the Java class:

javac Fibonacci.java

This will generate a Fibonacci.class file.

Place the Fibonacci.class file in the test/dataset/ directory of your Rust project.

Run the Rust example:

cargo run --example basic -- test/dataset/Fibonacci.class

This command will disassemble the Fibonacci.class file and print the equivalent Java source code.

Environment Variables

You can customize the behavior of the library by setting the following environment variables:

OLLAMA_MODEL: The Ollama model to use for translation (default: qwen2.5-coder).

OLLAMA_URL: The URL of the Ollama API (default: http://localhost:11434/api/generate).

License

This project is licensed under the MIT License. See the LICENSE file for details.