Question

请教java中关于带参的方法的一道题，想来想去就是不知道怎么弄，求大神指点我这菜鸟，可给悬赏~！

public class Customer {
int custNo; //会员编号
int score; //会员积分
}
public class CustManager {
Customer[] customers=new Customer[4];
public void add(Customer cust){
for (int i = 0; i < customers.length; i++) {
if (customers[i]==null) {
customers[i]=cust;
break;
}
}
}
public void showCustomers(){
System.out.println("***会员列表***");
System.out.println("编号\t积分");
for (int i = 0; i < customers.length; i++) {
if (customers[i]==null) {
break;
}
System.out.println(customers[i].custNo+"\t"+customers[i].score);
}
}
}
public class TestCust {
/** * @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
Scanner input=new Scanner(System.in);
Customer cust=new Customer();
CustManager manager =new CustManager();
System.out.print("输入会员编号：");
cust.custNo=input.nextInt();
System.out.print("输入会员积分：");
cust.score=input.nextInt();
manager.add(cust);
manager.showCustomers();

}
}

请问怎样做到图上的效果呢?急死了！

Answer 1

import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import java.util.Scanner;

public class CustManager {
public static void main(String[] args) {
int score=0;
int castNo=0;
Scanner input=new Scanner(System.in);
Map<Integer,Integer> maps=new HashMap<Integer,Integer>();
while(true){
System.out.println("请选择功能：输入--1 显示列表 --2 查询 --3 推出系统--4 ");
int choose=input.nextInt();
if(choose==1){
System.out.print("请输入会员编号：");
castNo=input.nextInt();
System.out.print("请输入会员积分：");
score=input.nextInt();

maps.put(castNo,score);
}else if(choose==2){
System.out.println("***会员列表***");
System.out.println("编号 积分");
Iterator<Integer> it=maps.keySet().iterator();
while(it.hasNext()){
int key=it.next();
int value=maps.get(key);
System.out.println(key+" "+value);
}
}else if(choose==3){
System.out.print("请输入要查询的会员编号：");
int key=input.nextInt();
System.out.println("该会员的积分为："+maps.get(key));
}else if(choose==4){
System.exit(0);
}else{
System.out.println("操作错误");
}
}

}

}

如果还有什么改动，你自己再改改吧，希望能对你有所帮助

Answer 2

public class Customer {
int custNo; //会员编号
int score; //会员积分
public int getCustNo() {
return custNo;
}

public void setCustNo(int custNo) {
this.custNo = custNo;
}

public int getScore() {
return score;
}

public void setScore(int score) {
this.score = score;
}
}

然后，打印的话改改
System.out.println(customers[i].custNo+"\t"+customers[i].score);
改成
System.out.println(customers[i].getCustNo() +"\t"+customers[i].getScore());

main方法中，给客户对象塞值的时候，要调用方法
System.out.print("输入会员编号：");
cust.setSustNo(input.nextInt());
System.out.print("输入会员积分：");
cust.setScore(input.nextInt());