razafinarivohanania / jd-gui-bug

Overview

It is a simple maven application in which there is a bug on JD-GUI when it attempts to decompile .jar file. There are two classes which are both Message as name but in separated package. The one is put in package_1 and the second in package_2. In the Main class we create two variables from these both class and use them.

Issue raised in java-decompiler/jd-gui#404

Context

Tested on JD-GUI v1.6.6

Expected result

When we create the .jar file from mvn clean package and open the .jar file in target directory using JD-GUI we should get the following content in Main class.

package org.example;

public class Main {
  public static void main(String[] args) {
    org.example.package_1.Message messageFromPackageOne = new Message("Message from package one");
    System.out.println(messageFromPackageOne.getMessage());
    org.example.package_2.Message messageFromPackageTwo = new Message("Message from package two");
    System.out.println(messageFromPackageTwo.getMessage());
  }
}

Actual result

But we get :

package org.example;

import org.example.package_1.Message;
import org.example.package_2.Message;

public class Main {
  public static void main(String[] args) {
    Message messageFromPackageOne = new Message("Message from package one");
    System.out.println(messageFromPackageOne.getMessage());
    Message messageFromPackageTwo = new Message("Message from package two");
    System.out.println(messageFromPackageTwo.getMessage());
  }
}

And in this result, we get conflict Message class. We don't know anymore if it belongs to org.example.package_1 or org.example.package_2.