java math methods example

/**
 * @author lautturi.com 
 * Java example: java Math class
 */

import java.util.*;

public class Lautturi {
	public static void main(String[] args)  {
		System.out.println(Math.abs(-5));
		System.out.println(Math.sqrt(4));
		System.out.println(Math.max(2.5, 2.4));
		System.out.println(Math.round(3.336));
		System.out.println(Math.round(3.456));
		System.out.println(Math.round(3.556));
		System.out.println(Math.round(-3.456));
		System.out.println(Math.round(-3.556));
		System.out.println(Math.ceil(3.456));
		System.out.println(Math.ceil(-3.456));
		System.out.println(Math.ceil(3.556));
		System.out.println(Math.ceil(-3.556));
		System.out.println(Math.floor(3.456));
		System.out.println(Math.floor(-3.456));
		System.out.println(Math.floor(3.556));
		System.out.println(Math.floor(-3.556));
	}
}

output:

5
2.0
2.5
3
3
4
-3
-4
4.0
-3.0
4.0
-3.0
3.0
-4.0
3.0
-4.0