What is the binary representation of -2147483648 in Java int?

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    One of the general solutions (in Java) for the problem "Number of 1 Bits" is as following by bit manipulation

    public int hammingWeight(int n) {
        int counter = 0;
        while(n != 0){
            counter += n & 1;
            n = n >>> 1;
        return counter;

    I wonder how it solves the problem when n=2147483648? It seems that in Java the largest int is 2147483647, and 2147483648 therefore is represented as -2147483648 due to cyclic representation. But I still don't understand how the above code is able to handle this situation.

    Anyone could shed further light on this? Thanks in advance!

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