Java - Double Class compare() Method

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

Double class compare() method

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

Syntax

public static int compare(double value1, double value2);

Parameters

double value1, double value2 – These parameters represent the double values to be compared.

Return Value

The return type of this method is int, it returns an integer value.

In the first case, it returns 0 if value1 is mathematically equals to value2.
In the second case, it returns the value < 0 if value1 is mathematically less than value2.
In the third case, it returns the value > 0 if value1 is mathematically greater than value2.

Example

// Java program to demonstrate the example 
// of compare(double value1,double value2) 
// method of Double class

public class CompareOfDoubleClass {
    public static void main(String[] args) {
        // Variables initialization
        double value1 = 18.20;
        double value2 = 20.20;

        // It compares two double values and 
        // returns the result in another variable (compare) 
        // of integer types
        int compare = Double.compare(value1, value2);

        // Display result
        System.out.println("Double.compare(value1,value2): " + compare);
        System.out.println();

        if (compare == 0)
            System.out.println("value1 is equal to value2");
        else if (compare < 0)
            System.out.println("value1 is less than value2");
        else
            System.out.println("value1 is greater than value2");
    }
}

Output

Double.compare(value1,value2): -1

value1 is less than value2

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