Ein einfaches
Math.pow
-Beispiel, Display 2 mit der Stärke von 8.
In Math 2^8 = 2x2x2x2x2x2x2x2 =256 In Java Math.pow(2, 8)
TestPower.java
package com.mkyong.test; import java.text.DecimalFormat; public class TestPower { static DecimalFormat df = new DecimalFormat(".00"); public static void main(String[]args) { //1. Math.pow returns double, need cast, display 256 int result = (int) Math.pow(2, 8); System.out.println("Math.pow(2, 8) : " + result); //2. Wrong, ^ is a binary XOR operator, display 10 int result2 = 2 ^ 8; System.out.println("2 ^ 8 : " + result2); //3. Test double , display 127628.16 double result3 = Math.pow(10.5, 5); System.out.println("Math.pow(10.5, 5) : " + df.format(result3)); } }
Ausgabe
Math.pow(2, 8) : 256 2 ^ 8 : 10 Math.pow(10.5, 5) : 127628.16