java--面向对象之多态3

Drink ：

package Water;

public class Drink {
public void taste(){

}
}

Coco：

package Water;

public class Coco extends Drink {

@Override
public void taste() {
System.out.println("我是可口可乐，我是甜汽水");
}

}

SaltDrink：

package Water;

public class SaltDrink extends Drink {

@Override
public void taste() {
System.out.println("我是盐汽水，我是咸的");
}

}

Test:

package Water;

import java.util.Scanner;

import org.junit.Test;

public class jTest {

@Test
//方式3
public void test(){
sell("甜的");
}
private void sell(String good){
Drink drink=null;
if(good.equals("甜的")){
drink=new Coco();
}else if("咸的".equals(good)){
drink=new SaltDrink();
}
drink.taste();
}
//方式2

/* public void sell(){
Coco coco=new C
4000
oco();
SaltDrink st=new SaltDrink();
System.out.println("请输入：");
String name=new Scanner(System.in).next();
if(name.equals("甜的")){
coco.taste();
}else if(name.equals("咸的")){
st.taste();
}else{
System.out.println("输入错误！！！");
}
//方式1
Drink dk1=new Coco();
Drink dk2=new SaltDrink();
Sell sell1=new Sell();
sell1.sell(dk1);
Sell sell2=new Sell();
sell2.sell(dk2);
}*/

}