Here you can find the source of isFocused(Component component, boolean recoursive)
public static boolean isFocused(Component component, boolean recoursive)
//package com.java2s; /*/* www.j a v a 2 s . c om*/ * Copyright 2012-2014 Dan Cioca * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import javax.swing.JComponent; import java.awt.Component; public class Main { public static boolean isFocused(Component component, boolean recoursive) { if (component.isFocusOwner()) return true; if (recoursive && component instanceof JComponent) { JComponent parentComponent = (JComponent) component; for (Component childComponent : parentComponent.getComponents()) { if (isFocused(childComponent, recoursive)) { return true; } } } return false; } }