Problem writing from PrintStream to "Console as Process" ,not "console as System.out"

in Java 8, windows 10, i have a text app, i want to open a console and write something there,

first try is:

Code:

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    String [] cmd = {"cmd.exe", "/c", "start"};
    ProcessBuilder f = new ProcessBuilder(cmd);
    f.redirectErrorStream(true);
    Process p = f.start();
    PrintStream printStream=new PrintStream(p.getOutputStream());
    //
    System.setOut(printStream);
    System.out.println("this write in CMD"); //did not work

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second try is:

Code:

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    printStream.println("this write in CMD");//did not work

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Can any body Help?