Java tutorial
/******************************************************************************* * Copyright (c) 2000, 2016 IBM Corporation and others. * * This program and the accompanying materials * are made available under the terms of the Eclipse Public License 2.0 * which accompanies this distribution, and is available at * https://www.eclipse.org/legal/epl-2.0/ * * SPDX-License-Identifier: EPL-2.0 * * Contributors: * IBM Corporation - initial API and implementation *******************************************************************************/ package org.eclipse.swt.events; /** * This adapter class provides default implementations for the * methods described by the <code>FocusListener</code> interface. * <p> * Classes that wish to deal with <code>FocusEvent</code>s can * extend this class and override only the methods which they are * interested in. * </p> * * @see FocusListener * @see FocusEvent * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a> */ public abstract class FocusAdapter implements FocusListener { /** * Sent when a control gets focus. * The default behavior is to do nothing. * * @param e an event containing information about the focus change */ @Override public void focusGained(FocusEvent e) { } /** * Sent when a control loses focus. * The default behavior is to do nothing. * * @param e an event containing information about the focus change */ @Override public void focusLost(FocusEvent e) { } }