how the -ve values organised

[kotha vijaybabu]

hi ranchers,
iam going towards scjp
but i got strucked at shifting operators
i didnot understood how the negative values are organised

for example

int b=-6;
String s=Integer.toBinaryString(b);
System.out.println(s);

output is :11111111111111111111111111111010

can anybody explain

thanx in advance

vijay

[Zip Ped]

The toBinaryString method adds 2^32 to the value of the argument if its negative and then converts the value to a binary format. Add
2^32(2 to the power 32) + (-6) = 4 294 967 290.

Use the scientific calc on your computer to check the binary value.

[srilatha kareddy]

binary value of 6 : 00000000 00000000 00000000 00000110

for Negative value complement above and add 1(2's complement)

11111111 11111111 11111111 11111001 (complement of +6)
+ 1
----------------------------------------
equals 11111111 11111111 11111111 11111010 (2's complement of 6 ==-6)
[ March 13, 2006: Message edited by: srilatha reddy ]

[kotha vijaybabu]

hi....,

i got it
thanx all of u