java.util.Iterator it = list.iterator();
while (it.hasNext()){
Infro infro = it.next();
if (infro.id.equals(d1)){
it.remove();
--index;//一定要加这个，否则当做了删除操作再做添加操作的时候会出现异常(类似于指针，栈)
System.out.println("删除完毕"+"此时通讯录记录条数为：" + --len);
}
}
}
/**
* 修改功能
**/
public static void reditFunction(){
System.out.println("输入要修改的通讯录的Id");
Scanner in_r = new Scanner(System.in);
String r1 = in_r.nextLine();
for(int a = 0; alen;a++){
if(r1.equals(list.get(a).id)){
System.out.println("输入修改后的姓名：");
String name_1 = in_r.next();
list.get(a).name = name_1;
System.out.println("输入修改后的性别：");
String sex_1 = in_r.next();
list.get(a).sex = sex_1;
System.out.println("输入修改后的通讯地址：");
String address_1 = in_r.next();
list.get(a).address = address_1;
System.out.println("输入修改后的邮箱地址：");
String e_mail_1 = in_r.next();
list.get(a).e_mail = e_mail_1;
System.out.println("输入修改后的电话：");
String phoneNumber_1 = in_r.next();
list.get(a).phoneNumber = phoneNumber_1;
System.out.println("数据修改完毕");
}
}
}
/**
* 查询功能
**/
public static void searchFunction() throws Exception{//查询功能
System.out.println("请输入要查询的姓名：");
Scanner in_1 = new Scanner(System.in);
String s1=in_1.nextLine();
for(int a= 0; a
if(s1.equals(list.get(a).name)){
System.out.println(list.get(a).toString());
}
}
}
/**
* 显示功能
**/
public static void showFunction(){
for(int i = 0 ;i
System.out.println(list.get(i).toString());
}
}
/**
* 保存功能
**/
public static void writeFunction() throws IOException{
FileWriter writer = new FileWriter("通讯录管理.txt");
for(int i = 0 ;i
String []strwriter = new String[len];
strwriter[i]=list.get(i).toString();
writer.write(strwriter[i]);
writer.write("\r\n");
System.out.println("成功写入一行数据到 通讯录管理.txt 中");
}
writer.close();//关闭写入流，释放资源
}
/**
* 读取功能
**/
public static void readFunction() throws IOException{
FileReader reader = new FileReader("通讯录管理.txt");
BufferedReader br = new BufferedReader(reader);
String str;
while((str = br.readLine()) != null){//每次读取一行文本，判断是否到达文件尾
System.out.println(str);
}
br.close();
}
}
public class Demo extends JFrame {
/**
* 界面设计
**/
public Demo(){
Container c = getContentPane(); //定义一个顶级容器c
JPanel jp = new JPanel(); //新建JPanel面板--jp
JButton button1 = new JButton("新建联系人");
JButton button2 = new JButton("删除联系人");
JButton button3 = new JButton("编辑联系人");
JButton button4 = new JButton("查找联系人");
JButton button5 = new JButton("显示所有联系人");
JButton button6 = new JButton("保存联系人到本地");
JButton button7 = new JButton("读取本地联系人");
jp.setLayout(new GridLayout(2,4,5,5));//新建网格布局管理器(行数，列数，组件间的水平垂直间距)
jp.add(button1);
jp.add(button2);
jp.add(button3);
jp.add(button4);
jp.add(button5);
jp.add(button6);
jp.add(button7);
c.add(jp);//将JPanel面板jp添加到顶级容器c中
setSize(600,500);
【电话本的java程序代码 电话本的java程序代码怎么写】