Debugger - Java - VSCODE

Remote Debugging with Visual Studio Code (Java Application)

  1. Install Visual Studio Code and required extensions:

    kali@kali:~$ sudo apt install ~/Downloads/code_1.45.1-1589445302_amd64.deb

  2. Set up launch.json for remote debugging:

    {
    "version": "0.2.0",
    "configurations": [
        {
            "type": "java",
            "request": "attach",
            "name": "Attach to Remote Program",
            "hostName": "127.0.0.1",
            "port": 8888
        }
    ]
}

2a. another Setup

{
"version": "0.2.0",
"configurations": [
{
"type": "node",
"request": "attach",
"name": "Attach to remote",
"address": "chips",
"port": 9229,
"localRoot": "${workspaceFolder}",
"remoteRoot": "/usr/src/app"
},
{
"type": "node",
"request": "attach",
"name": "Attach to remote (cli)",
"address": "chips",
"port": 9228,
"localRoot": "${workspaceFolder}",
"remoteRoot": "/usr/src/app"
}
]
}

  1. Start the Java application with remote debugging:

    kali@kali:~$ java -agentlib:jdwp=transport=dt_socket,server=y,suspend=n,address=9898 -jar NumberGame.jar

  2. Attach the debugger in Visual Studio Code:

    • Open MainController.java and set a breakpoint.
    • Start debugging by selecting the configuration from the debug panel.

  3. Verify the debugger connection and step through the code:

    • Submit a request on the web page to trigger the breakpoint.
    • Use the debugging context menu to step over, into, or out of code, and continue execution as needed .