Write code to check if two strings are equal and handle null value
//package com.book2s; public class Main { public static void main(String[] argv) { String str1 = "book2s.com"; String str2 = "book2s.com"; System.out.println(notEquals(str1, str2)); }//from ww w. ja v a 2 s . co m public static boolean notEquals(String str1, String str2) { if (str1 == null) { return str2 != null; } return !str1.equals(str2); } public static boolean equals(String str1, String str2) { if (str1 == null) { return str2 == null; } return str1.equals(str2); } }