Can Equals Vs Equals Java Code Example

Example: java == vs equals

In general both equals() and == operator in Java are used to compare  objects to check equality but here are some of the differences between the two:  1) .equals() and == is that one is a method and other is operator. 2) We can use == operator for reference comparison (address comparison)  and .equals() method for content comparison.   -> == checks if both objects point to the same memory location   -> .equals() evaluates to the comparison of values in the objects. 3) If a class does not override the equals method, then by default it  uses equals(Object o) method of the closest parent class  that has overridden this method.  // Java program to understand   // the concept of == operator  public class Test {      public static void main(String[] args)      {          String s1 = new String("HELLO");          String s2 = new String("HELLO");          System.out.println(s1 == s2);          System.out.println(s1.equals(s2));      }  }  Output: false true    Explanation: Here we are creating two (String) objects namely s1 and s2. Both s1 and s2 refers to different objects.  -> When we use == operator for s1 and s2 comparison then the result is false   as both have different addresses in memory.  -> Using equals, the result is true because its only comparing the   values given in s1 and s2.