电话本管理系统（数组版）

package com.zhp.java;   public class Person {     private String name ;     private String sex ;     private int age ;     private long tel ;     private long qq ;     private String ads ;       public Person() {     }       public Person(String name , String sex , int age , long tel , long qq , String ads ) {        this . name = name ;        this . sex = sex ;        this . age = age ;        this . tel = tel ;        this . qq = qq ;        this . ads = ads ;     }       public String getName() {        return name ;     }       public void setName(String name ) {        this . name = name ;     }       public String getSex() {        return sex ;     }       public void setSex(String sex ) {        this . sex = sex ;     }       public int getAge() {        return age ;     }       public void setAge( int age ) {        this . age = age ;     }       public long getTel() {        return tel ;     }       public void setTel( long tel ) {        this . tel = tel ;     }       public long getQq() {        return qq ;     }       public void setQq( long qq ) {        this . qq = qq ;     }       public String getAds() {        return ads ;     }       public void setAds(String ads ) {        this . ads = ads ;     }       @Override     public String toString() {        return "姓名：" + name + ", 性别：" + sex + ", 年龄：" + age + ", 电话：" + tel + ", QQ：" + qq + ", 地址：" + ads ;     } }       package com.zhp.java;   import java.util.Scanner;   public class GuanLi {     Scanner sc = new Scanner(System. in );     Person[] arr = new Person[100];     int current = -1; // 用于保存当前数组中的有电话本对象的下标       public void yeWu() {        int x = 0;        while ( true ) {            System. out .println( "请选择业务" );            System. out .println( "--------------------电话本管理系统--------------------" );            System. out .println( "1.添加    2.删除    3.修改    4.查询所有    5.根据姓名查询    0.退出" );            System. out .println( "--------------------电话本管理系统--------------------" );            x = sc .nextInt();            if ( x == 1) {               add();            } else if ( x == 2) {               del();            } else if ( x == 3) {               update();            } else if ( x == 4) {               selectAll();            } else if ( x == 5) {               selectName();            } else if ( x == 0) {               exit();               break ;            } else {               System. out .println( "请选择正确的功能" );            }        }     }       // 添加     public void add() {        System. out .println( "--------------------添加联系人--------------------" );        current ++;        System. out .print( "请输入姓名" );        String q = sc .nextLine();        String name = sc .nextLine();        System. out .print( "请输入性别" );        String sex = sc .nextLine();        System. out .print( "请输入年龄" );        int age = sc .nextInt();        System. out .print( "请输入电话" );        long tel = sc .nextLong();        System. out .print( "请输入QQ" );        long qq = sc .nextLong();        System. out .print( "请输入地址" );        String w = sc .nextLine();        String ads = sc .nextLine();        Person person = new Person( name , sex , age , tel , qq , ads );        arr [ current ] = person ;     }       // 删除     public void del() {        System. out .println( "--------------------删除联系人--------------------" );        System. out .println( "请输入删除联系人姓名：" );        String q = sc .nextLine();        String name1 = sc .nextLine();        boolean flag = false ;        for ( int i = 0; i <= current ; i ++) {            if ( name1 .equals( arr [ i ].getName())) {               System. out .println( arr [ i ].toString());               System. out .println( "确定么？1（是）0（否）" );               int a = sc .nextInt();               if ( a == 1) {                   System. out .println( "删除成功" );                   flag = true ;               }               //此处if放在判断名字的if内，名字不相等是不进入此处if               if ( flag ) {                   //此处for循环j<=current也可以，因为最后current--掉了                   for ( int j = i ; j <= current -1; j ++) {                      arr [ j ] = arr [ j + 1];                   }                   current --;               }            }        }        if ( flag == false ) {            System. out .println( "此人不存在" );        }       }       // 修改     public void update() {        System. out .println( "--------------------修改联系人--------------------" );        System. out .println( "请输入联系人姓名：" );        String q = sc .nextLine();        String name1 = sc .nextLine();        boolean flag = false ;        for ( int i = 0; i <= current ; i ++) {            if ( name1 .equals( arr [ i ].getName())) {               flag = true ;            }            if ( flag ) {               System. out .print( "请输入姓名" );               String name = sc .nextLine();               System. out .print( "请输入性别" );               String sex = sc .nextLine();               System. out .print( "请输入年龄" );               int age = sc .nextInt();               System. out .print( "请输入电话" );               long tel = sc .nextLong();               System. out .print( "请输入QQ" );               long qq = sc .nextLong();               System. out .print( "请输入地址" );               String e = sc .nextLine();               String ads = sc .nextLine();               arr [ i ] = new Person( name , sex , age , tel , qq , ads );            }        }        if ( flag == false ) {            System. out .println( "此人不存在" );        }     }       // 查看所有的     public void selectAll() {        System. out .println( "--------------------查看所有联系人--------------------" );        for ( int i = 0; i <= current ; i ++) {            System. out .println( arr [ i ].toString());        }       }       // 根据姓名查看     public void selectName() {        System. out .println( "--------------------查找联系人--------------------" );        System. out .println( "请输入联系人姓名：" );        String q = sc .nextLine();        String name1 = sc .nextLine();        boolean flag = false ;        for ( int i = 0; i <= current ; i ++) {            if ( name1 .equals( arr [ i ].getName())) {               flag = true ;            }            if ( flag ) {               System. out .println( arr [ i ].toString());               break ;            }        }        if ( flag == false ) {            System. out .println( "不存在此人" );        }     }       // 退出     public void exit() {        System. out .println( "系统退出" );     }   }       package com.zhp.java;   public class Test {       public static void main(String[] args ) {        GuanLi gl = new GuanLi();        gl .yeWu();     } }