Java tutorial
/* * Copyright 2017 ThoughtWorks, Inc. * * 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. */ package com.thoughtworks.go.domain; import org.apache.commons.lang.StringUtils; import java.util.ArrayList; import java.util.List; import java.util.function.Function; import java.util.stream.Collectors; public class AllConfigErrors extends ArrayList<ConfigErrors> { public AllConfigErrors(List<ConfigErrors> errors) { addAll(errors); } public AllConfigErrors() { } public String asString() { return StringUtils.join(this.stream().map(new Function<ConfigErrors, String>() { @Override public String apply(ConfigErrors errors) { return errors.asString(); } }).collect(Collectors.toList()), ", "); } }