public class Xunhuan {    public static void main(String[] args){    int i = 1;    System.out.println("Before the loop");    int sum = 0;    while(i<=100){         /*条件判断         * 1.boolean值         * 3.条件运算符*/        sum = sum + i;        ++i;    }    System.out.println("The value of sum is "+sum);    System.out.println("After the loop");  }}