/*

* Math 數(shù)學(xué)類，提供各種數(shù)學(xué)計(jì)算方法

*

* 1. abs(double value) 獲取絕對(duì)值

* 2. ceil(double value) 向上取整

* 3. floor(double value) 向下取整

* 4. random() 生成隨機(jī)數(shù),大于0.0 到1.0之間的隨機(jī)數(shù)

* 5. round(double value) 四舍五入

*/

public class Demo14 {

public static void main(String[] args) {

// TODO Auto-generated method stub

double i = -10.3;

System.out.println(Math.abs(i));

System.out.println(Math.ceil(i));

System.out.println(Math.floor(i));

System.out.println(Math.round(i));

System.out.println(Math.random());

}

}