Java Math floor()

The Java Math floor() method rounds the specified double value downward and returns it.

The rounded value will be equal to mathematical integer. That is, the value 3.8 will be rounded to 3.0 which is equal to integer 3.

The syntax of the floor() method is:

Math.floor(double value)

Here, floor() is a static method. Hence, we are accessing the method using the class name, Math.

floor() Parameters

The floor() method takes a single parameter.

  • value - number which is to be rounded upward

floor() Return Value

  • returns the rounded value that is equal to the mathematical integer

Note: The returned value is the largest value that is smaller than or equal to the specified argument.

Example: Java Math.floor()

class Main {
  public static void main(String[] args) {

    // Math.floor() method
    // value greater than 5 after decimal
    double a = 1.878;
    System.out.println(Math.floor(a));  // 1.0

    // value equals to 5 after decimal
    double b = 1.5;
    System.out.println(Math.floor(b));  // 1.0

    // value less than 5 after decimal
    double c = 1.34;
    System.out.println(Math.floor(c));  // 1.0

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