Get last Index Of a substring and handle null value - Java java.lang

Java examples for java.lang:String Substring

  1. HOME
  2. Java
  3. java.lang
  4. String Substring

Description

Get last Index Of a substring and handle null value

Demo Code


//package com.java2s;

public class Main {
    public static void main(String[] argv) {
        String str = "java2s.com";
        char searchChar = 'a';
        System.out.println(lastIndexOf(str, searchChar));
    }/*from  w ww. j a  v  a2  s  .  com*/

    public static int lastIndexOf(String str, char searchChar) {
        if ((str == null) || (str.length() == 0)) {
            return -1;
        }

        return str.lastIndexOf(searchChar);
    }

    public static int lastIndexOf(String str, char searchChar, int startPos) {
        if ((str == null) || (str.length() == 0)) {
            return -1;
        }

        return str.lastIndexOf(searchChar, startPos);
    }

    public static int lastIndexOf(String str, String searchStr) {
        if ((str == null) || (searchStr == null)) {
            return -1;
        }

        return str.lastIndexOf(searchStr);
    }

    public static int lastIndexOf(String str, String searchStr, int startPos) {
        if ((str == null) || (searchStr == null)) {
            return -1;
        }

        return str.lastIndexOf(searchStr, startPos);
    }
}

Related Tutorials