Here you can find the source of createToolbar()
private static JToolBar createToolbar()
//package com.java2s; /*//from w w w . j a v a2 s. c o m * Copyright (c) 2013, SRI International * All rights reserved. * Licensed under the The BSD 3-Clause License; * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: * * http://opensource.org/licenses/BSD-3-Clause * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * Neither the name of the aic-expresso nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. */ import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JToolBar; public class Main { protected static JFrame frame; protected static final String CLOSE = "CLOSE"; protected static final String EXIT = "EXIT"; private static JToolBar createToolbar() { JToolBar toolbar = new JToolBar(); toolbar.setFloatable(false); JButton button = null; button = makeNavigationButton(CLOSE, "Close the expression window", "Close Window"); toolbar.add(button); button = makeNavigationButton(EXIT, "Exit the program", "Exit Program"); toolbar.add(button); return toolbar; } protected static JButton makeNavigationButton(String actionCommand, String toolTipText, String altText) { // Create and initialize the button. JButton button = new JButton(); button.setActionCommand(actionCommand); button.setToolTipText(toolTipText); button.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { String actionCommand = e.getActionCommand(); if (actionCommand.equals(CLOSE)) { disposeExpressionsTree(); } if (actionCommand.equals(EXIT)) { System.exit(0); } } }); button.setText(altText); return button; } public static void disposeExpressionsTree() { frame.dispose(); } }