```java
public class helloworld {
public static void main (String[] args){
System.out.println("hello");
System.out.println(10);
}
}
```为什么会报错
```java
public class helloworld {
public static void main (String[] args){
System.out.println("hello");
System.out.println(10);
}
}
```为什么会报错