10進法を16進法に変換する最も簡単な方法

 1 package demo;
 2 
 3 public class TestHex {
 4     private static String array[]={"0","1","2","3","4",
 5             "5","6","7","8","9",
 6             "A","B","C","D","E"};
 7     public  static  void main(String args[]){
 8         testHex(128);
 9     }
10     
11     /**
12      *  10     16  
13      *    10   15     (          16   )
14      * 0110
15      * 1111
16      *   &=
17      * 0110
18      */
19     
20     public static void testHex(int num){
21         int temp;
22         StringBuffer strb = new StringBuffer();
23         for(int i=0;i<8;i++){
24             temp=num&15;
25             strb.append(array[temp]);
26             num=num>>>4;
27             
28         }
29         System.out.println(strb.reverse());
30         //     :00000080
31     }
32 
33 }

 
転載先:https://www.cnblogs.com/hoojjack/p/5804323.html