Java converting int to hex and back again

Question

I have the following code...

int Val=-32768;
String Hex=Integer.toHexString(Val);

This equates to ffff8000

int         


        

Answer 1

• int to Hex :

  Integer.toHexString(intValue);
  

• Hex to int :

  Integer.valueOf(hexString, 16).intValue();
  

You may also want to use long instead of int (if the value does not fit the int bounds):

• Hex to long:

  Long.valueOf(hexString, 16).longValue()
  

• long to Hex

  Long.toHexString(longValue)