Java - Double Class equals() Method

Double class equals() method: Here, we are going to learn about the equals() method of Double class with its syntax and example. By Preeti Jain Last updated : March 23, 2024

Double class equals() method

equals() method is available in Double class of java.lang package.
equals() method is used to check equality or inequality of this Object against the given Object or in other words we can say this method is used to compare two objects.
equals() method is a non-static method, it is accessible with the class object only and if we try to access the method with the class name then we will get an error.
equals() method does not throw an exception at the time of comparing two Objects.

Syntax

public boolean equals(Object ob);

Parameters

Object ob – represents the Object to compare with.

Return Value

The return type of this method is boolean, it returns a Boolean value. it returns a Boolean value. If both objects are equal it returns "true", else it returns "false".

Example

// Java program to demonstrate the example 
// of boolean equals(Object ob) method of Double class

public class DoubleToLongBitsOfDoubleClass {
    public static void main(String[] args) {
        // Variables initialization
        Double ob1 = new Double(10.0);
        Double ob2 = new Double(20.0);

        // Display value1,value2 values
        System.out.println("ob1: " + ob1);
        System.out.println("ob2: " + ob2);

        // It compare two objects of Double type
        // by calling ob1.equals(ob2)
        boolean compare = ob1.equals(ob2);

        // Display result values
        System.out.println("ob1.equals(ob2): " + compare);

        if (compare == true)
            System.out.println("Both objects are equal");
        else
            System.out.println("Both objects are not equal");
    }
}

Output

ob1: 10.0
ob2: 20.0
ob1.equals(ob2): false
Both objects are not equal

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