Bitwise signedness

gistfile1.txt

class Foo {
    public static void main(String[] args) {
        System.out.println("Number is less than zero: " + (0x80000000 < 0));
        System.out.println("Self-bitwise-&:           " + (0x80000000 & 0x80000000));
        System.out.println("Self-bitwise-& is self:   " + ((0x80000000 & 0x80000000) == 0x80000000));
    }
}

/*
Number is less than zero: true
Self-bitwise-&:           -2147483648
Self-bitwise-& is self:   true
*/

print("Number is less than zero: " + (0x80000000 < 0));
print("Self-bitwise-&:           " + (0x80000000 & 0x80000000));
print("Self-bitwise-& is self:   " + ((0x80000000 & 0x80000000) == 0x80000000));

/*
Number is less than zero: false
Self-bitwise-&:           -2147483648
Self-bitwise-& is self:   false
*/