Java tutorial
package org.apache.maven.project.validation; /* * 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.util.ArrayList; import java.util.Collections; import java.util.List; /** * @author <a href="mailto:trygvis@inamo.no">Trygve Laugstøl</a> */ public class ModelValidationResult { /** */ private static final String LS = System.lineSeparator(); /** */ private List<String> messages; public ModelValidationResult() { messages = new ArrayList<>(); } public int getMessageCount() { return messages.size(); } public String getMessage(int i) { return messages.get(i); } public List<String> getMessages() { return Collections.unmodifiableList(messages); } public void addMessage(String message) { messages.add(message); } public String toString() { return render(""); } public String render(String indentation) { if (messages.size() == 0) { return indentation + "There were no validation errors."; } StringBuilder message = new StringBuilder(); // if ( messages.size() == 1 ) // { // message.append( "There was 1 validation error: " ); // } // else // { // message.append( "There was " + messages.size() + " validation errors: " + LS ); // } // for (int i = 0; i < messages.size(); i++) { message.append(indentation).append('[').append(i).append("] ").append(messages.get(i)).append(LS); } return message.toString(); } }