- package test;
- /*
- *Math:数学运算
- * 成员变量
- * PI E
- *
- * 成员方法
- * public static int abs(int a) 绝对值
- * public static double ceil(double a) 向上取整
- * public static double floor(double a) 向下取整
- * public static int max(int a,int b)
- * public static int min (int a,int b)
- * public static double pow(double a,double b) a的b次幂
- * public static double random(); [0.0-1.0)
- * public static int round(float) 参数为double 四舍五入
- * public static double sqrt(double a) 正平方根
- *
- * */
- public class Test01 {
- public static void main(String[] args) {
- System.out.println(Math.PI);
- System.out.println(Math.E);
-
- //abs
- System.out.println(Math.abs(-10));
- //ceil
- System.out.println(Math.ceil(12.34));
- //floor
- System.out.println(Math.floor(12.34));
- //max
- System.out.println(Math.max(12,33));
- System.out.println(Math.max(12, Math.max(14, 44))); //方法嵌套调用
- //pow
- System.out.println(Math.pow(2,3));
- //round
- System.out.println(Math.round(12.63));
- System.out.println(Math.round(12.11));
- //sqrt
- System.out.println(Math.sqrt(4));
- }
- }
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