Whizlabs question

[Latha Kota]

HI all, I found this question from Whizlabs software, can anybody explain me the answer. I dont have a clear concept of shift operators.
System.out.println(-1>>>1);
The answer is 2147483647
Thanks in advance
Latha

[Barry Gaunt]

-1 is the following number in binary:
1111 1111 1111 1111 1111 1111 1111 1111
Shift to the right by one bit to get:
0111 1111 1111 1111 1111 1111 1111 1111 -> a 1 falls off the end here.

The zero on the left appears because we are using the >>> operator (compare with what the >> operator does)
What's the decimal equivalent of the result?