1 private static int getDecimal(String strHex){ 2          3         char[] t = {‘0‘,‘1‘,‘2‘,‘3‘,‘4‘,‘5‘,‘6‘,‘7‘,‘8‘,‘9‘,‘a‘,‘b‘,‘c‘,‘d‘,‘e‘,‘f‘}; 4         int len = strHex.length(); 5         int result = 0; 6         for(int i = len;i>0;i--){ 7             char c = strHex.charAt(i-1); 8             for(int j=0;j<t.length;j++){ 9                 if(c==t[j]){10                     result+=j<<((len - i )*4);11                 }12             }13         }14         return result;15     }