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      * 将10进制转换成16进制13      * 直接将10进制与15进行与运算(二进制中每四位为一个16进制位)14      * 011015      * 111116      *   &=17      * 011018      */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         //输出结果为:0000008031     }32 33 }