What is Math.floor() in JAVA?

The floor() function returns the largest double value that is less than or equal to a specific number.

Figure 1, below, shows the mathematical representation of the floor() function.

Figure 1: Mathematical representation of floor() function

Syntax

double floor(number num)

Parameter

This function requires a number as a parameter.

The number can be int, float, double, or long.

Return Value

floor() returns the largest double value that is less than or equal to a specific number.

Code

class JAVA {
    public static void main( String args[] ) {
        //integer
        System.out.println("Math.floor(2):");
        System.out.println(Math.floor(2));
        //positive double value
        System.out.println("Math.floor(2.56):");
        System.out.println(Math.floor(2.56));
        //negative double value
        System.out.println("Math.floor(-2.36):");
        System.out.println(Math.floor(-2.36));
    }
}

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