bitwise & operation on char variable

[Barkat Mardhani]

char c = 'C', d = 'D';
System.out.println(c $ d)
The above code prints 64. How did it derive that number?

[Barkat Mardhani]

correction
Replace $ with & in above code. Sorry...

[Michael Morris]

Hi Barkat,
Well the int representation for the chars 'c' and 'd' are 67 and 68 respectively. So in binary that would be:

1000011 &
1000100

Bitwise anding gives us:

1000000

which is 64.
Hope this clears it up,
Michael Morris

[Dirk Schreckmann]

Barkat,
Note that you have the ability to edit your posts at JavaRanch. Just click on the icon that looks like a piece of paper with a pencil.

[Dirk Schreckmann]

For a nice introduction to bitwise operations, take a look at The Cat and Mouse Games with Bits Story of The Campfire Stories.
Good Luck.

[Jim Yingst]

Also - c and d were chars, but c & d is promoted to int by the rules of binary promotion. That's why it prints as the number 64 rather than the char '@' (which has value 64).