Difference Between == and equals method in Java with Example : Core Java Interview Question

Difference between == and equals method is not one of the most frequently asked question in java developer interview. However, we should know the concept of equals()  method and == operator in java.
In other words ,

Example 1:


Integer i = new Integer(10);
Integer j = i;

in the above code, i == j is true because both i and j refer to the same object.

Example 2:


Integer i = new Integer(10);
Integer j = new Integer(10);

In the above code, i == j is false because, although they both have the value 10, they are two different objects.



Recap:  Difference between == and equals() method in java

==equals()
Primitives or ObjectsPrimitivesObject
Typebinary operatorMethod
ComparisonBased on Memory referenceBased  on values


That's it for today, please mention in comments if you have any questions regarding difference between == and equals() method in java.



About The Author

Subham Mittal has worked in Oracle for 3 years .
For more java articles ,Click here to Subscribe JavaHungry