A question about the maximum value of int+1

 

What is the result of the following code?

public class t1 {
    public static void main(String[] args) {
        int i=10;
        while(i>0){
            i = i +1;
            if(i==10){
                break;
            }
        }
        System.out.println("i=" + i);
    }
}

i=-2147483648

because:

   01111111 11111111 11111111 11111111

   00000000 00000000 00000000 00000000

--------------------------------------------------------------------

  10000000 00000000 00000000 00000000

Judging from the sign bit, the highest bit is 1, which is a negative number. Jump out of the judgment in while, and then convert from binary to decimal. The result is i=-2147483648