public class HelloWorld {
??? public static void main(String[] args) {
??????? int sum = 0;
??????? int i=1;
???????
??????? do {
?????????? if(i%2==0){
?????????????? sum=sum+i;
?????????? }
??????????? i++;
???????????
??????????? } while (i<=50);
??????????? System.out.println(" 50以內(nèi)的偶數(shù)之和為：" + sum );
??????? }
??? }???