Difference between == and equals method in java

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Difference between == and equals method in java
Posted on: July 5, 2010 at 12:00 AM

In this tutorial you will see the difference between the == and equals for comparision in java.

Description:

For comparing equality of string ,We Use equals() Method. There are two ways of comparison in java. One is "==" operator and another "equals()" method . "==" compares the reference value of string object whereas equals() method is present in the java.lang.Object class. This method compares content of the string object. .

Code:


public class EqualDemo2 {

  public static void main(String[] args) {

    String s1 = "Hello";

    String s2 = "Hello";

    String s3 = new String("Hello");



    if (s1.equals(s2)) {

      System.out.println("TRUE");

    } else {

      System.out.println("FALSE");

    }



    if (s1 == s2) {

      System.out.println("TRUE");

    } else {

      System.out.println("FALSE");

    }

    if (s1.equals(s3)) {

      System.out.println("TRUE");

    } else {

      System.out.println("FALSE");

    }



    if (s1 == s3) {

      System.out.println("TRUE");

    } else {

      System.out.println("FALSE");

    }



  }

}

Output:

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