scjp真题请教,
public class Question {
String s = "Outer";
public static void main (String [] args) {
S2 s2 = new S2();
s2.display();
}
}
class S1 {
String s = "S1";
void display() {
System.out.println(s);
}
}
class S2 extends S1 {
String s = "S2";
}
输出什么?