import javax.swing.SwingUtilities;
import javax.swing.JFrame;

public class Parent {
    public static void main(String[] args) throws Exception {
        new ProcessBuilder(args[0] + "\\bin\\java.exe", "Parent$Child").start();
    }

    public static class Child extends JFrame {
        public static void main(String[] args) throws Exception {
            SwingUtilities.invokeAndWait(() -> {
                JFrame frame = new JFrame();
                frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
                frame.setSize(500, 600);
                frame.setVisible(true);
            });
        }
    }
}