提问
public class A {
/** Creates a new instance of A */
public A() {
}
public byte getNumber()
{
return 1;
}
}
public class B extends A{
public B() {
}
public short getNumber() //为什么错误呢??
{
return 2;
}
public static void main(String[] args)
{
B b=new B();
System.out.println(b.getNumber());
}
}
请求帮助