繼承 示例

首先先建立一個類

public class Father {
private Daughter daughter ;//擁有女兒屬性

public Daughter getDaughter() {
return daughter;
}
public void setDaughter(Daughter daughter) {
this.daughter = daughter;
}

 

//方法 ：監督學習
public void supervisionLearn(){
System.out.println("快點作做業！");
this.daughter .response();

if(this.daughter instanceof PureDaughter){
PureDaughter pd=(PureDaughter)this.daughter;
pd.coquetry();
}
}

}

再建立一個父類

public class Daughter {
public void response(){

}

}

 

女兒子類

 

public class BoldDaughter extends Daughter{
public void response(){
System.out.println("忽的站起來，衝進了房間，狠狠地關上了門，唸到：真煩！");
}

}

 

能夠再建立另外一個不一樣性格的女兒

最後main方法

 

public class TestMain {
public static void main(String[]args){
Father li=new Father();

PureDaughter doudou=new PureDaughter();
BoldDaughter lili=new BoldDaughter();
li.setDaughter(doudou);
li.supervisionLearn();
}

}