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改进这个问题
我想预约，取消，检查病人的预约方式，但我不知道该怎么办。将这两个类链接在一起以生成方法？

病人类别***

import java.util.Scanner;
public class Patient {
String name;
String ID;

public Patient(String name , String ID ){
this.name = name;
this.ID = ID;

}

public void NewPatient(int Pnum) {

Scanner input = new Scanner(System.in);

String Patient[] = new String[100];

for (int i = 1; i <= Pnum; i++) {
System.out.println ("Patient " + i + " info:");
Patient[i] = input.nextLine();
}
}

public Patient(){

}
public void bookApp(){

}

public void cancleApp(){

}
public void setname(String n){
this.name = n;
}
public void setID(String ID){
this.ID= ID;
}
public String getname(){
return name;
}   
public String getID(){
return ID;
}
public void checkApp(){

}
public String toString(){
return "The patient name is :" + getname() + "The patient ID is :"+ getID();
}
}

预约班***

public class Appointemnt extends Patient{

private String AppointemntNum;
private String AppointemntDate;
private String AppointemntTime;

public Appointemnt(String name, String ID ,String AppointemntNum, String AppointemntDate, String AppointemntTime){
super(name , ID);
this.AppointemntNum = AppointemntNum;
this.AppointemntDate = AppointemntDate;
this.AppointemntTime = AppointemntTime;
}

public void setAppointemntNum(String AppointemntNum){
this.AppointemntNum = AppointemntNum;
}

public String getAppointemntNum(){
return AppointemntNum;
}

public void setAppointemntDate(String AppointemntDate){
this.AppointemntDate = AppointemntDate;
}

public String getAppointemntDate(){
return AppointemntDate;
}

public void setAppointemntTime(String AppointemntTime){
this.AppointemntTime = AppointemntTime;

}

public String getAppointemntTime(){
return AppointemntTime;
}

public void checkApp(){

}

public void bookApp(){

}

public String toString(){
return "The patient name is :" + getname() + "The patient ID is :"+ getID() + "AppointemntNum: " + getAppointemntNum() + "AppointemntDate: " + getAppointemntDate() + "AppointemntTime: " + getAppointemntTime();
}
}