Here you can find the source of lastIndexOfIgnoreCase(String str, String searchStr)
public static int lastIndexOfIgnoreCase(String str, String searchStr)
//package com.java2s; /*// ww w . j av a2s. c om * Copyright 2016 the original author or authors. * * 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. */ public class Main { /** * Return last sub-String position ignore case, return -1 if not found */ public static int lastIndexOfIgnoreCase(String str, String searchStr) { if (searchStr.isEmpty() || str.isEmpty()) return -1; return str.toLowerCase().lastIndexOf(searchStr.toLowerCase()); } /** * Check whether the given String is empty. */ public static boolean isEmpty(Object str) { return str == null || "".equals(str); } }