How Can I List Active Windows or Processes in Java Cross-Platform?

How to Obtain a List of Active Windows or Processes Using Java

Question:

Can anyone assist me in retrieving a list of currently open windows or processes on a local machine using Java? I aim to create a cross-platform solution similar to the Windows Task Manager's listing of active processes.

Answer:

An alternative approach to extracting the process list from the "ps -e" command:

try {
    String line;
    Process p = Runtime.getRuntime().exec("ps -e");
    BufferedReader input =
            new BufferedReader(new InputStreamReader(p.getInputStream()));
    while ((line = input.readLine()) != null) {
        System.out.println(line); // <-- Parse data here.
    }
    input.close();
} catch (Exception err) {
    err.printStackTrace();
}

For Windows systems, modify the code as follows:

Process p = Runtime.getRuntime().exec
    (System.getenv("windir") +"\system32\"+"tasklist.exe");

This approach should provide the desired list of running windows or processes.

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