Creating a byte type from a String in Java

Question

I have this string 11110000, which represents a byte.

I want to create a byte from that string, but I can't find any example on-line.

Can someone please help me?

Solution 1

int value = Integer.parseInt(s, 2); // 2 for binary

If you want byte type:

byte value = Byte.parseByte(s, 2); // 2 for binary

Solution 2

Use Byte#parseByte().

Solution 3

Use

byte b = (byte) Integer.parseInt("11111",2);

Solution 4

byte myByte = (byte)Integer.parseInt("11110000", 2);

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Comments

[Martin James]

What have you tried so far? I found loads of stuff online in seconds. Let me guess - your actual homework question stipulates 'You must not use ParseInt or any other library calls'.

[Matt Ball]

BTW, Java bytes are signed, so 11110000 is out of range.

[dash1e]

That's the reason I suggest to use Integer.parseInt.