[求助]java的一些入门问题
请大家帮我看一下，谢谢！package untitled1;
public class Example
{public static void main(String args[])
{
double sum=0,item=1;
int i=1;
while (i<=100)
{sum=sum+item;
i++;
item=item*(1.0/i);
}
sum=sum+1;
System.out.printf("e="+sum);
sum=0;
i=1;
item=1;
do{sum=sum+item;
i++;
item=item*(1.0/i);
}
while(i<=1000);
sum=sum+1;
System.out.printf("e="+sum);
}
}
错误调试：
"dowhile.java": class Example is public, should be declared in a file named Example.java at line 2, column 1
