COBOL to Java Compiler 🚀

Overview

This project is a COBOL to Java Compiler, capable of parsing COBOL source code, generating an Abstract Syntax Tree (AST), and converting it into Java source code. It supports embedded SQL (JDBC) and includes a Graphical User Interface (GUI).

Features ✅

• Lexical Analysis (Tokenization): Converts COBOL source into tokens.
• Abstract Syntax Tree (AST) Parsing: Analyzes COBOL syntax.
• Java Code Generation: Converts COBOL AST to Java source code.
• Support for SQL Queries (EXEC SQL): Uses Java JDBC.
• COBOL Statements Support:
  • DISPLAY (Prints output)
  • MOVE (Assigns values to variables)
  • STOP RUN (Graceful exit)
  • WORKING-STORAGE (Variable declarations)
  • PERFORM (Loops execution)
  • GOTO (Jumping between labels)
  • SEARCH (Sequential and Binary Search)
  • SORT (Array Sorting)
  • MERGE (Combining Arrays)
  • CALL (Calling Subroutines)
• Debugging Mode: Enables tracing execution.
• Graphical User Interface (GUI): Allows users to input COBOL code, compile, and view Java output.
• Unit Testing for Validation.

How to Run 🏃‍♂️

Requirements:

• Java 11+
• Maven (For dependency management)
• MySQL Database (For SQL feature testing)

Steps to Run:

1. Clone the repository:

   git clone https://github.com/sekacorn/cobol-to-java-compiler.git

2. Navigate to the project directory:

   cd cobol-to-java-compiler

3. Compile and Run:

   mvn compile exec:java

4. Open the GUI and enter COBOL code to compile!

Sample COBOL Code 📜

DISPLAY "Hello, COBOL".
MOVE 100 TO VAR1.
STOP RUN.

Generated Java Code

public class Program {
    public static void main(String[] args) {
        System.out.println("Hello, COBOL");
        int VAR1 = 100;
        System.exit(0);
    }
}

Limitations ❌

• No Full COBOL Standard Support:
  • Some COBOL data types are not fully mapped to Java.
  • No support for COBOL Report Writer.
• No Dynamic Memory Management:
  • COBOL’s ALLOCATE is not supported.
• Limited File Handling:
  • OPEN, READ, and WRITE statements have basic support but lack full COBOL file handling features.
• Limited Error Handling:
  • Exception handling is simplistic.
• SQL Support Requires MySQL:
  • Only supports MySQL JDBC; no support for other database engines.
• No Multi-threading Support:
  • Java code is single-threaded.

Future Enhancements 🔥

• Support for COBOL File Handling (OPEN, READ, WRITE)
• Improved Error Handling with Exception Management
• Extend SQL Compatibility (Support PostgreSQL, Oracle, etc.)
• Performance Optimizations using Multi-threading
• Deploy as a Web-Based Compiler

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📌 Developed with ❤️ by COBOL & Java Enthusiasts 📌