Common methods of Math in java

public class Demo{
     public static void main(String args[]){ /** *Math.sqrt()//Calculate the square root *Math.cbrt()//Calculate the cube root*Math.pow(a, b)//Calculate a raised to the b power*Math.max( , );//Calculate the maximum value*Math.min( , );//Calculate the minimum value */ System.out.println(Math.sqrt(16)); // 4.0 System.out.println(Math.cbrt(8)); // 2.0 System.out.println(Math.pow(3,2)); // 9.0 System.out.println(Math.max(2.3,4.5) ); // 4.5 System.out.println(Math.min(2.3,4.5)); // 2.3 /** *abs finds the absolute value */ System.out.println(Math.abs(-10.4)); / / 10.4 System.out.println(Math.abs(10.1)); //10.1 /** * The meaning of ceil ceiling is to return a large value */ System.out.println(Math.ceil(-10.1)); // -10.0 System.out.println(Math.ceil(10.7)); // 11.0 System.out.println(Math.ceil(-0.7)); // -0.0 System.out.println(Math.ceil(0.0)); // 0.0 System.out.println(Math.ceil(- 0.0)); // -0.0 System.out.println(Math.ceil(-1.7)); // -1.0 /** * The meaning of the floor is to return a small value */ System.out.println(Math .floor(-10.1)); // -11.0 System.out.println(Math.floor(10.7)); // 10.0 System.out.println(Math.floor(-0.7)); // -1.0 System. out.println(Math.floor(0.0));//0.0 System.out.println(Math.floor(-0.0)); //-0.0 /** * random 取得一个大于或者等于0.0小于不等于1.0的随机数 */ System.out.println(Math.random()); //小于1大于0的double类型的数 System.out.println(Math.random()*2);//大于0小于1的double类型的数 System.out.println(Math.random()*2+1);//大于1小于2的double类型的数 /** * rint 四舍五入，返回double值 * 注意.5的时候会取偶数 异常的尴尬=。= */ System.out.println(Math.rint(10.1)); //10.0 System.out.println(Math.rint(10.7)); //11.0 System.out.println(Math.rint(11.5)); //12.0 System.out.println(Math.rint(10.5)); //10.0 System.out.println(Math.rint(10.51)); //11.0 System.out.println(Math.rint(-10.5)); //-10.0 System.out.println(Math.rint(-11.5)); //-12.0 System.out.println(Math.rint(-10.51)); //-11.0 System.out.println(Math.rint(-10.6)); //-11.0 System.out.println(Math.rint(-10.2)); //-10.0 /** * round 四舍五入，float时返回int值，double时返回long值 */ System.out.println(Math.round(10.1)); //10 System.out.println(Math.round(10.7)); //11 System.out.println(Math.round(10.5)); //11 System.out.println(Math.round(10.51)); //11 System.out.println(Math.round(-10.5)); //-10 System.out.println(Math.round(-10.51)); //-11 System.out.println(Math.round(-10.6)); //-11 System.out.println(Math.round(-10.2)); //-10  } }