Object Equals 

Google Guava is a java library with lot of utilities and reusable components. This requires the library guava-10.0.jar to be in classpath. The following example shows using Objects.equal() API.

File Name  :   com/bethecoder/tutorials/guava/base_tests/ObjectsEqualTests.java  Author  :   Sudhakar KV Email  :   [email protected]

package com.bethecoder.tutorials.guava.base_tests; import com.google.common.base.Objects; public class ObjectsEqualTests {   /**    * @param args    */   public static void main(String[] args) {     String str1 = new String("BTC");     String str2 = new String("BTC");     String str3 = str1;          System.out.println(Objects.equal(str1, str2));     System.out.println(Objects.equal(str1, str3));     System.out.println(Objects.equal(str2, str3));          System.out.println(Objects.equal(str1, null));     System.out.println(Objects.equal(str2, null));     System.out.println(Objects.equal(null, str3));          System.out.println(Objects.equal(null, null));     System.out.println(Objects.equal("", ""));   } }

true
true
true

false
false
false

true
true