Here you can find the source of createNewValue(String value, Collection
public static String createNewValue(String value, Collection<String> values)
//package com.java2s; /******************************************************************************* * Copyright (c) 2016 German Federal Institute for Risk Assessment (BfR) * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version.//from w ww . ja va 2 s . c o m * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. * * Contributors: * Department Biological Safety - BfR *******************************************************************************/ import java.util.Collection; public class Main { public static String createNewValue(String value, Collection<String> values) { if (!values.contains(value)) { return value; } for (int i = 2;; i++) { String newValue = value + "_" + i; if (!values.contains(newValue)) { return newValue; } } } }