Java Object equals()

Syntax of Object equals()

The syntax of the equals() method is:

object.equals(Object obj)

equals() Parameters

The equals() method takes a single parameter.

• obj - object which is to be compared with the current object

equals() Return Values

• returns true if two objects are equal
• returns false if two objects are not equal

Note: In Java, if two reference variables refer to the same object, then the two reference variables are equal to each other.

Example 1: Java Object equals()

In the above examples, we have created objects of the Object class. Here, the equals() method is used to check if objects are equal to each other.

Example 2: Object equals() With String

In the above example, we have used the equals() method to check if two objects obj1 and obj2 are equal.

Here, initially, both the newly created objects are null. Hence, the method returns true. However, when we assigned values to the objects. The method returns false.

It is because the String class overrides the equal() method so that the method compares the element of the object. Since the values of obj1 and obj2 are different, the method returns false.

Note: The Object class is the superclass for all the classes in Java. Hence, every class and arrays can implement the equals() method.