Java tutorial
//package com.java2s; import java.awt.Component; import java.awt.Container; import java.awt.Window; public class Main { public static void parentWindowToFront(Component component) { if (component == null) { throw new NullPointerException("component == null"); } Container parent = component.getParent(); while (parent != null) { if ((parent instanceof Window)) { Window parentWindow = (Window) parent; parentWindow.toFront(); return; } parent = parent.getParent(); } } }