What does Integer.rotateLeft(i, 64); actually do??

[Vishal Hegde]

What does Integer.rotateLeft(i, 64); actually do??

I mean if it shifts bits how can we calculate that(assuming ourselves as Compilers)

[Jeff Verdegan]

Vishal Hegde wrote:What does Integer.rotateLeft(i, 64); actually do??

Try it and see.

I mean if it shifts bits how can we calculate that(assuming ourselves as Compilers)

What do you mean?

[Jesper de Jong]

Lookup the rotateLeft() method in the API documentation of class Integer. Especially note this part:

Note also that rotation by any multiple of 32 is a no-op ...

[Chandraprakash Sarathe]

Integer x=10;
System.out.println(x);//10
System.out.println(x.rotateLeft(x, 2)); //40

here rotateLeft shifts the bit 2 position left.

10 :
00000000 00000000 00000000 00001010

shift 2 bit left :
00000000 00000000 00000000 00101000