Here you can find the source of showMessages(Component parent, List
public static void showMessages(Component parent, List<String> messages)
//package com.java2s; /*/*from ww w . j a va2 s .co m*/ * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed with * this work for additional information regarding copyright ownership. * The ASF licenses this file to You 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.Component; import java.awt.Window; import java.util.List; import javax.swing.*; public class Main { public static void showMessages(Component parent, List<String> messages) { if ((messages == null) || (messages.size() == 0)) { return; } Window window = SwingUtilities.windowForComponent(parent); StringBuilder sb = new StringBuilder(); if (messages != null) { for (int i = 0, size = messages.size(); i < size; i++) { sb.append(messages.get(i)); if (i < size - 1) { sb.append("\r\n"); } } } JOptionPane.showMessageDialog(window, sb.toString()); } }