java地址簿管理系统

import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class AA {
List list=new ArrayList();
private void a() {
System.out.println(“欢迎使用地址簿管理系统=");
System.out.println();
while (true) {
System.out.print("1:查找地址 " + " ");
System.out.print("2:添加地址 " + " ");
System.out.print("3:删除地址 " + " ");
System.out.print("4:修改地址 " + " ");
System.out.print(“5:查看所有地址” + " “);
System.out.println(“0:退出”);
System.out.println();
System.out.println(“请选择你要执行的操作”);
String input = new Scanner(System.in).next();
switch (input) {
case “1”:
System.out.println(“查看地址*”);
System.out.println(“请输入你要查找的地址”);
String intput = new Scanner(System.in).next();
if (list.contains(intput)) {
System.out.println(“查找到地址：”+intput);
}
else {
System.out.println(“未查到该地址”);
}
System.out.println(”");
break;
case “2”:
System.out.println(“添加地址”);
System.out.println(“请输入你要添加的地址”);
String A = new Scanner(System.in).next();
list.add(A);
System.out.println(“添加成功”);
System.out.println("");
break;
case “3”:
System.out.println(“删除地址”);
System.out.println(“请输入你要删除的地址”);
String B = new Scanner(System.in).next();
list.remove(B);
System.out.println(“删除成功”);
System.out.println("");
break;
case “4”:
System.out.println(“修改地址”);
System.out.println(“请输入你要修改的地址”);
String C = new Scanner(System.in).next();
list.remove©;
System.out.println(“请输入更改后的地址”);
String change = new Scanner(System.in).next();
list.add(change);
System.out.println(“修改成功”);
System.out.println("");
break;
case “5”:
System.out.println(“查看地址”);
for (int i = 0; i < list.size(); i++) {
System.out.println(list.get(i));
}
System.out.println("============================================”);
break;
case “0”:
System.out.println("*****欢迎下次使用,再见！");
return;
default:
System.out.println("!!!输入序号有误，重新选择!!!");
break;
}
}

    }
 public static void main(String[] args) {
	new ad().a();
}

}

本文地址：https://blog.csdn.net/laoliusm/article/details/107390130