父类和子类
public class Father {
public void FF1(){
System.out.println("我是FF1");
}
public void FF2(){
System.out.println("我是FF2");
}
}
public class Son extends Father {
public void FF2(){
System.out.println("我是Son的FF2");
}
}
public class test06 {
public static void main(String[] args) {
Father f=new Son();
f.FF2();
}
}
