Here you can find the source of getFirstValueString(List
public static String getFirstValueString(List<Object> values)
//package com.java2s; /*// w w w .ja v a2 s. co m * Copyright (c) 2014 Evolveum * * 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.util.*; public class Main { public static String getFirstValueString(List<Object> values) { if (values.isEmpty()) { return null; } Object first = values.get(0); return first != null ? first.toString() : null; } }