使用java将输出写入命令提示符

Question

I am trying to open a command prompt from a java class and send output to the new command prompt. I can open cmd using process . Gone through all the answers on SO,but couldn't figure out how can I pass the output to the just created cmd window.

Answer 1

This might not be practical or even usable, but it does the job :

String[] command = {"cmd", "/c", "start", "cmd.exe"};
try {
    new ProcessBuilder(command).start();
    Robot r = new Robot();

    r.keyPress(KeyEvent.VK_SHIFT);
    r.keyPress(KeyEvent.VK_H);
    r.keyRelease(KeyEvent.VK_H);
    r.keyRelease(KeyEvent.VK_SHIFT);
    r.keyPress(KeyEvent.VK_E);
    r.keyRelease(KeyEvent.VK_E);
    r.keyPress(KeyEvent.VK_L);
    r.keyRelease(KeyEvent.VK_L);
    r.keyPress(KeyEvent.VK_L);
    r.keyRelease(KeyEvent.VK_L);
    r.keyPress(KeyEvent.VK_O);
    r.keyRelease(KeyEvent.VK_O);
} catch (IOException | AWTException e) {
    e.printStackTrace();
}

This opens a CMD and write (a bit too literally maybe) "Hello" in the CMD.

See this answer if you want to type a String.