刚从网上看到的问题
public class TT{ public static void main(String s[])
{ S1 s1 = new S1();
S2 s2 = new S2();
s1 = s2;
System.out.println(s1.s);
System.out.println(s1.getS());
}
}
class S1
{ public String s = "S1";
public String getS()
{ return s; }
}
class S2 extends S1
{ public String s = "S2";
public String getS()
{ return s; }
}
输出结果是 S1 S2，为什么s没有变， getS()却变了呢？
