集合ArrayList的一个练习题，arraylist练习题
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集合ArrayList的一个练习题，arraylist练习题
设计一个联系人类，完成一个对联系人增删改查的操作流程，所有的联系人信息存储在ArrayList集合中
package cn.ketang.zuoye;
import java.util.ArrayList;
import java.util.Scanner;
public class ContactArraylist {
static ArrayList<Person> al = new ArrayList<Person>();//定义一个泛型集合
public static void main(String[] args) {
shuRu();
}
private static void shuRu() {
System.out.println("添加1-----删除2----修改3----4查找---0退出");
int a = new Scanner(System.in).nextInt();
switch (a) {
case 1:
addPerson();
shuRu();
break;
case 2:
delPerson();
shuRu();
break;
case 3:
modifPerson();
shuRu();
break;
case 4:
findPerson();
shuRu();
break;
case 0:
System.exit(0);
break;
default:
break;
}
}
private static void findPerson() {
String x = new Scanner(System.in).nextLine();
int ii = 0;
for (int i = 0; i < al.size(); i++) {
if (al.get(i).getName().equals(x)) {//查找方法，先获取到al的某个元素，在获得他的名字，判断是否和输入的名字一致
System.out.println("查找成功");
System.out.println(al);
i++;
}
}
if (ii==0) {
System.out.println("暂无此人");
}
}
private static void modifPerson() {
String x = new Scanner(System.in).nextLine();
String x1 = new Scanner(System.in).nextLine();
for (int i = 0; i < al.size(); i++) {
if (al.get(i).getName().equals(x)) {
al.get(i).setName(x1);
System.out.println("修改成功");
}
}
System.out.println(al);
}
private static void delPerson() {
String x = new Scanner(System.in).nextLine();
for (int i = al.size()-1; i >=0; i--) {
if (al.get(i).getName().equals(x)) {
al.remove(i);
System.out.println("删除成功");
}
}
System.out.println(al);
}
private static void addPerson() {
String x = new Scanner(System.in).nextLine();
char y = new Scanner(System.in).nextLine().charAt(0);
int z = new Scanner(System.in).nextInt();
int z1 = new Scanner(System.in).nextInt();
Person p = new Person(x, y, z, z1);
al.add(p);
System.out.println(al);
}
}
package cn.ketang.zuoye;
/**
* @author nice
*
*/
public class Person {
private String name;
private char sex;
private int age;
private int number;
public Person() {
// TODO Auto-generated constructor stub
}
public Person(String name, char sex, int age, int number) {
super();
this.name = name;
this.sex = sex;
this.age = age;
this.number = number;
}
public String toString() {
// TODO Auto-generated method stub
return "姓名：" + name + "性别：" + sex + "年龄：" + age + "电话号码：" + number;
}
// @Override
// public boolean equals(Object obj) {
// if (obj instanceof Person) {
// Person p = (Person)obj;
// return this.name==p.name;
// }
// return false;
// }
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public char getSex() {
return sex;
}
public void setSex(char sex) {
this.sex = sex;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public int getNumber() {
return number;
}
public void setNumber(int number) {
this.number = number;
}
}
2.编写一个程序，使用集合存储客户的邮件地址。地址中应该包含姓名，街道，市（县），省（自治区），国家（地区）然后显示集合中的内容；要求使用对象数组和至少两种集合对象来实现
此程序的输出结果如下：
姓 名: 李四
街 道: 南山
市 （县）: 深圳
省（自治区）: 广东
国家（地区）: 中国
****************************
姓 名: 张三
街 道: 南山
市 （县）: 南昌
省（自治区）: 江西
国家（地区）: 中国
**************************
姓 名: 王五
街 道: 布吉
市 （县）: 深圳
省（自治区）: 广东
国家（地区）: 中国
package cn.ketang.zuoye02;
import java.util.ArrayList;
import java.util.Scanner;
public class ListTest {
static ArrayList<Client> al = new ArrayList<Client>();
public static void main(String[] args) {
shuru();
}
private static void shuru() {
System.out.println("添加1删除2修改3打印4退出0");
int a = new Scanner(System.in).nextInt();
switch (a) {
case 1:
addPerson();
shuru();
break;
case 2:
delPerson();
shuru();
break;
case 3:
modifPerson();
shuru();
break;
case 4:
printPerson();
shuru();
break;
case 0:
System.exit(0);
break;
default:
break;
}
}
private static void printPerson() {
for (int i = 0; i < al.size(); i++) {
System.out.println("姓 名：" + "\t" + al.get(i).getName());
System.out.println("街 道：" + "\t" + al.get(i).getJiedao());
System.out.println("市 （县）：" + "\t" + al.get(i).getChengshi());
System.out.println("省（自治区）：" + "\t" + al.get(i).getShengfeng());
System.out.println("国家（地区）：" + "\t" + al.get(i).getCountry());
System.out.println("************************");
}
}
private static void modifPerson() {
String x = new Scanner(System.in).nextLine();
String x1 = new Scanner(System.in).nextLine();
for (int i = 0; i < al.size(); i++) {
if (al.get(i).getName().equals(x)) {
al.get(i).setName(x1);
System.out.println("修改成功");
}
}
System.out.println(al);
}
private static void delPerson() {
String x = new Scanner(System.in).nextLine();
for (int i = 0; i < al.size(); i++) {
if (al.get(i).getName().equals(x)) {
al.remove(i);
System.out.println("删除成功");
}
}
System.out.println(al);
}
private static void addPerson() {
String x = new Scanner(System.in).nextLine();
String y = new Scanner(System.in).nextLine();
String z = new Scanner(System.in).nextLine();
String z1 = new Scanner(System.in).nextLine();
String z2 = new Scanner(System.in).nextLine();
Client cli = new Client(x, y, z, z1, z2);
al.add(cli);
System.out.println(al);
}
}
package cn.ketang.zuoye02;
public class Client {
private String name;
private String jiedao;
private String chengshi;
private String shengfeng;
private String country;
public Client() {
}
public Client(String name, String jiedao, String chengshi, String shengfeng, String country) {
super();
this.name = name;
this.jiedao = jiedao;
this.chengshi = chengshi;
this.shengfeng = shengfeng;
this.country = country;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getJiedao() {
return jiedao;
}
public void setJiedao(String jiedao) {
this.jiedao = jiedao;
}
public String getChengshi() {
return chengshi;
}
public void setChengshi(String chengshi) {
this.chengshi = chengshi;
}
public String getShengfeng() {
return shengfeng;
}
public void setShengfeng(String shengfeng) {
this.shengfeng = shengfeng;
}
public String getCountry() {
return country;
}
public void setCountry(String country) {
this.country = country;
}
public String toString() {
return "姓名：" + name + "街道：" + jiedao + "市县：" + chengshi + "省：" + shengfeng + "国家" + country;
}
}
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