Java Object equals(Object obj) Method

equals(Object obj) is the method of Object class. This method is used to compare the given objects. It is suggested to override equals(Object obj) method to get our own equality condition on Objects.

Syntax

Parameter

obj - it is the reference object.

Returns

It returns true if this object is same as the obj argument else it returns false otherwise.

Example 1

public class JavaObjectequalsExample1 {
   static int a = 10, b=20;  
    int c; 
    // Constructor 
    JavaObjectequalsExample1() 
    { 
        System.out.println("Addition of 10 and 20 : ");
        c=a+b;
        System.out.println("Answer : "+c);        
    } 
  
    // Driver code 
    public static void main(String args[]) 
    { 
        System.out.println("1st object created...");
        JavaObjectequalsExample1 obj1 = new JavaObjectequalsExample1();  
        System.out.println("2nd object created...");
        JavaObjectequalsExample1 obj2 = new JavaObjectequalsExample1();  
        System.out.println("Objects are equal:" + obj1.equals(obj2)); 
    }  
}

Test it Now

Output:

1st object created...
Addition of 10 and 20 : 
Answer : 30
2nd object created...
Addition of 10 and 20 : 
Answer : 30
Objects are equal:false

Example 2

public class JavaObjectequalsExample2{
   static int a = 10, b=20;  
    int c; 
    // Constructor 
    JavaObjectequalsExample2() 
    { 
        System.out.println("Addition of 10 and 20 : ");
        c=a+b;
        System.out.println("Answer : "+c);        
    } 
    JavaObjectequalsExample2(int x, int y) 
    { 
        System.out.println("Parameterized Constructors");
        System.out.println("Addition " +x+ " and " +y);
        c=x+y;
        System.out.println("Answer : "+c);        
    } 
    // Driver code 
    public static void main(String args[]) 
    { 
        System.out.println("1st object created...");
        JavaObjectequalsExample2 obj1 = new JavaObjectequalsExample2();  
        System.out.println("2nd object created...");
        JavaObjectequalsExample2 obj2 = new JavaObjectequalsExample2(2,3);  
        System.out.println("Objects are equal:" + obj1.equals(obj2)); 
    }  
}

Test it Now

Output:

1st object created...
Addition of 10 and 20 : 
Answer : 30
2nd object created...
Parameterized Constructors
Addition 2 and 3
Answer : 5
Objects are equal:false

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