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

Using Integer.toHexString(...) is a good answer. But personally prefer to use String.format(...).

Try this sample as a test.

byte[] values = new byte[64];
Arrays.fill(values, (byte)8);  //Fills array with 8 just for test
String valuesStr = "";
for(int i = 0; i < values.length; i++)
    valuesStr += String.format("0x%02x", values[i] & 0xff) + " ";
valuesStr.trim();