bits and bytes in java

Question

Can we have in Java one byte whose upper 4 bits represent values like 0x40/0x80 and lower 4 bits representing values like 0,1,2,3.If yes then how do we retrieve values out of that on byte?Any help is greatly appreciated.

Try googling java bit manipulation

Andreas
– Andreas

2016-01-18 16:20:06 +00:00
Commented Jan 18, 2016 at 16:20 — Andreas
– Andreas, Commented Jan 18, 2016 at 16:20

President James K. Polk · Accepted Answer · 2016-01-18 16:13:14Z

1

A simple example is probably easier than using words to describe it.

byte data = 0x74;
int high4 = (data >> 4) & 0xf;
int low4 = data & 0xf;

answered Jan 18, 2016 at 16:13

President James K. Polk

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George Sovetov · Accepted Answer · 2016-01-18 16:14:25Z

1

You can create wrapper class for byte or int with methods that fidget bits.

int first4bits = (byteContainer >> 4) & 0xF;
int last4bits = byteContainer & 0xF;

The problem is that such actions are inappropriate in Java.

answered Jan 18, 2016 at 16:14

George Sovetov

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