Java: Convert a hexadecimal encoded String to a hexadecimal byte

Question

An Item-ID in hexadecimal and the amount in decimal has to be entered in two JTextFields.

Now I have to convert the Item ID hexadecimal encoded in a String to a byte hexadecimal.

String str = itemIdField.getText(); // Would be, for example, "5e"
byte b = // Should be 0x5e then.

So if str = "5e", b = 0x5e

if str = "6b" b = 0x6b and so on.

Does anybody now, what the code to convert that would be then? Google doesn't know, it thinks, I want to convert the text to a byte[]

Thank you, Richie

tofcoder · Accepted Answer · 2014-02-12 14:27:51Z

4

You can use Byte.parseByte(str, 16), that will return the byte value represented by the hexadecimal value in str.

answered Feb 12, 2014 at 14:27

tofcoder

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1 Comment

Thank you :) I would give U +1 but I haven't got enough reputation