package Wangui2;
interface SpeakEnglish { //定义接口
public abstract void speak();
}
class Person{ //定义抽象人类
private String name;
public Person(){}
public Person(String name){
this.name = name;
}
public String getName(){
return name;
}
public void setName(String name){
this.name = name;
}
}
abstract class Player extends Person{ //定义抽象运动员类
public Player(){}
public Player(String name){
super(name);
}
public abstract void study(); //定义学习
}
abstract class Coach extends Person{ //定义抽象教练类
public Coach(){}
public Coach(String name){
super(name);
}
public abstract void teah(); //定义教学
}
class PingPangPlayer extends Player implements SpeakEnglish{ //具体乒乓球运动员类
public PingPangPlayer(){}
public PingPangPlayer(String name){
super(name);
}
public void speak(){ //学习英语
System.out.println(getName()+"学习英语");
}
public void study(){ //学习乒乒球
System.out.println(getName()+"乒乒球运动员学习乒乒球");
}
}
class BasketballPlayer extends Player{ //具体篮球运动员类
public BasketballPlayer(){}
public BasketballPlayer(String name){
super(name);
}
public void study(){ //学习篮球
System.out.println(getName()+"篮球运动员学习蓝球");
}
}
class PingPangCoach extends Coach implements SpeakEnglish{ //具体乒乓球教练类
public PingPangCoach(){}
public PingPangCoach(String name){
super(name);
}
public void speak(){ //学习英语();
System.out.println("学习英语");
}
public void teah(){ //教学
System.out.println("乒乒球教练教学员乒乒球");
}
class BasketballCoach extends Coach { //具体篮球教练类
public BasketballCoach(){}
public BasketballCoach(String name){
super(name);
}
public void teah(){ //教学
System.out.println("篮球教练教学员蓝球");
}
}
static class InterfaceDemo{ //测试类
public static void main(String[] args){
//测试运动员(乒乓球运动员和篮球运动员)
//测试乒乓球运动员
System.out.println(" ");
PingPangPlayer A = new PingPangPlayer();
A.setName("小强");
A.study();
A.speak();
BasketballPlayer B = new BasketballPlayer();
B.setName("小喜");
B.study();
//测试教练(乒乓球教练和篮球教练)
//测试乒乓球教练
PingPangCoach C = new PingPangCoach();
C.setName("小杨");
C.teah();
C.speak();
BasketballCoach D = new BasketballCoach();
D.setName("小花");
D.teah();
}}}
在最后生成新的对象D的时候Basketball Coach显示出错,但是我不知道为什么,最后我没有生成对象,直接删了最后三行,但是运行不了,这是这么回事啊?没有找到main吗?求解