Java Math floor() Method

May 27, 2023

Java Math Class

Java Math class provides several methods to perform several operations on math calculations like max(), min(), sin(), cos(), round(), ceil(), floor(), abs() etc.
The java.lang.Math class contains various methods for performing basic numeric operations
Here, in the page we will discuss about the math floor() Method in java.

Java Math floor() Method :

This function returns the largest (closest to positive infinity) double value that is both less than or equal to the argument and equal to an integer in mathematics.

Special Points :

The result is the same as the argument if the argument’s value is already an integer in mathematics.
The argument and the result are identical if the argument is NaN, an infinity, a positive zero, or a negative zero.

Syntax :

public static double floor(double a)

Parameters : a - a value.

Throws Exception : It does throws any exceptions and error.

Return Value : The largest floating-point value that is mathematically equivalent to an integer, less than or equal to the argument, and closest to positive infinity.

Example 1 :

Run

public class Main{
    public static void main(String[] args) {
        
        //declaring variables
        double x = 50.3;
        double y = 75.9;
        double z = -55.2;
        double e = -30.1;
        
        //printing out the results of the floor method
        System.out.println("Math.floor(" + x + ") = " + Math.floor(x));
        System.out.println("Math.floor(" + y + ") = " + Math.floor(y));
        System.out.println("Math.floor(" + z + ") = " + Math.floor(z));
        System.out.println("Math.floor(" + e + ") = " + Math.floor(e));
    }
}

Output :

Math.floor(50.3) = 50.0
Math.floor(75.9) = 75.0
Math.floor(-55.2) = -56.0
Math.floor(-30.1) = -31.0

Explanation : This example shows how the floor method functions using the Java math floor() method. It simply returns the smaller integer that is closest to the number.

Example 2 :

Run

public class Main{
    public static void main(String[] args) {
        
        //declaring variables
        double x = 50.3/0;
        double y = 0.0;
        double z = -0.0;
        double e = -30.1;
        
        //pringing output for infinite input
        System.out.println("Math.floor(" + x + ") = " + Math.floor(x));

        //printing output for positive and negative input
        System.out.println("Math.floor(" + y + ") = " + Math.floor(y));
        System.out.println("Math.floor(" + z + ") = " + Math.floor(z));

        //printing output for negative input
        System.out.println("Math.floor(" + e + ") = " + Math.floor(e));
    }
}

Output :

Math.floor(50.3/0) = Infinity
Math.floor(0.0) = 0.0
Math.floor(-0.0) = -0.0
Math.floor(-30.1) = -31.0

Explanation : In the preceding example, we have observed that :
If the argument value is already equal to a mathematical integer, then the result is the same as the argument.
If the argument is NaN or an infinity or positive zero or negative zero, then the result is the same as the argument.

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Java Math floor() Method

Java Math Class

Java Math floor() Method :

Special Points :

Syntax :

Example 1 :

Output :

Example 2 :

Output :

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