Java——Math

目录

Math 类的常用方法

代码部分 

结果展示

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Math 类的常用方法

代码部分 

package Math;

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

        System.out.println("Math.PI = " + Math.PI);

        // public static int abs (int a):返回参数的绝对值
        System.out.println(Math.abs(88));
        System.out.println(Math.abs(-88));
        System.out.println("==========");

        // public static double ceil (double a):返回大于或者等于参数的最小double值,等于一个整数
        System.out.println(Math.ceil(88.1));
        System.out.println(Math.ceil(88.0));
        System.out.println("==========");

        // public static double floor (double a):返回小于或者等于参数的最大double值,等于一个整数
        System.out.println(Math.floor(88.1));
        System.out.println(Math.floor(88.0));
        System.out.println("==========");

        // public static double max (double a, double b):返回两个参数中的最大值
        System.out.println(Math.max(88.1, 88.0));
        System.out.println("==========");

        // public static double min (double a, double b):返回两个参数中的最小值
        System.out.println(Math.min(88.1, 88.0));
        System.out.println("==========");

        // public static double pow (double a, double b):返回参数a的b次幂
        System.out.println(Math.pow(2, 3));
        System.out.println("==========");

        // public static double random():返回一个double值,在0.0到1.0之间
        System.out.println(Math.random());
        System.out.println("==========");

        // public static double round (double a):返回参数a的四舍五入值
        System.out.println(Math.round(88.1));
        System.out.println(Math.round(88.5));
        System.out.println("==========");

        // public static double sqrt (double a):返回参数a的平方根
        System.out.println(Math.sqrt(4));
        System.out.println("==========");

        // public static double toDegrees (double angrad):将参数angrad转换为角度
        System.out.println(Math.toDegrees(Math.PI));
        System.out.println("==========");

        // public static double toRadians (double angdeg):将参数angdeg转换为弧度
        System.out.println(Math.toRadians(180));
        System.out.println("==========");
    }
}

结果展示