This helped me :

You can try following this. https://code.visualstudio.com/docs/java/java-tutorial

Also, try going to settings in VSCode. Search for jdk, it opens up a settings.json file. Now try this.

And sheck this : Changing the java.home path in VS code

Except for Android development, no. Not for free at least. For Java try Visual Studio Code.

As a first step, try to compile your programm from te command line. E.g. How do I run a Java program from the command line on Windows? is a good start. You can run the commands directly in VSCode's integrated terminal. Optionally, create a VS Code build task from that command to run builds with the build command.

{
    "version": "2.0.0",
    "tasks": [
        {
            "label": "Build Foo",
            "type": "shell",
            "command": "javac foo.java",
            "problemMatcher": []
        }
    ]
}

To run/debug, create a launch config in the debug viewlet, for example:

   // Use IntelliSense to learn about possible attributes.
    // Hover to view descriptions of existing attributes.
    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
    "version": "0.2.0",
    "configurations": [
        {
            "type": "java",
            "name": "Debug (Launch)-Foo",
            "request": "launch",
            "cwd": "${workspaceFolder}",
            "console": "internalConsole",
            "stopOnEntry": false,
            "mainClass": "Foo",
            "args": ""
        },
        {
            "type": "java",
            "name": "Debug (Attach)",
            "request": "attach",
            "hostName": "localhost",
            "port": 0
        }
    ]
}