Here you can find the source of displayInputMessage(String title, String message, String defaultInput)
public static String displayInputMessage(String title, String message, String defaultInput)
//package com.java2s; /*//from w ww. j a v a 2s .c o m * Copyright 2010-2012 University of Toronto * * 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 java.awt.KeyboardFocusManager; import java.awt.Window; import javax.swing.JOptionPane; public class Main { public static String displayInputMessage(String title, String message, String defaultInput) { String result = JOptionPane.showInputDialog(getFrontWindow(), message, title, JOptionPane.QUESTION_MESSAGE); if (result != null && result.length() > 0) { return result; } return null; } /** * For purposes of parenting dialogs, here's frontmost window. Generally, it's the * MedSavant main window, but in some cases it could be a dialog. */ public static Window getFrontWindow() { return KeyboardFocusManager.getCurrentKeyboardFocusManager().getActiveWindow(); } }