java号码池

Ⅰ 实现一个小型通讯录。java

Friend类：public class Friend {
/*
* 姓名
*/
private String name;
/*
* 电话
*/
private String telephone;
/*
* 邮箱
*/
private String email;
/*
* 公司
*/
private String company; public String getName() {
return name;
} public void setName(String name) {
this.name = name;
} public String getTelephone() {
return telephone;
} public void setTelephone(String telephone) {
this.telephone = telephone;
} public String getEmail() {
return email;
} public void setEmail(String email) {
this.email = email;
} public String getCompany() {
return company;
} public void setCompany(String company) {
this.company = company;
} public String toString() {
StringBuffer str = new StringBuffer(); str.append("姓名：" + name).append("\n");
str.append("电话：" + telephone).append("\n");
str.append("邮箱：" + email).append("\n");
str.append("公司：" + company).append("\n");
str.append("-----------------------------------------\n");
return str.toString();
}
}AddFriend类：public class AddFriend { /**
* 主方法 程序的入口
*/
public static void main(String[] args) {
List<Friend> friendList = new ArrayList<Friend>();
char isGo = 'Y';
int i = 0;
do {
Friend friend = new Friend();
System.out.println("请输入第" + (i + 1) + "位朋友的姓名：");
InputStreamReader reader = new InputStreamReader(System.in);
String str = "";
try {
str = (new BufferedReader(reader)).readLine();
} catch (IOException e) {
e.printStackTrace();
}
friend.setName(str); System.out.println("请输入第" + (i + 1) + "位朋友的电话："); try {
str = (new BufferedReader(reader)).readLine();
} catch (IOException e) {
e.printStackTrace();
}
if (str.matches("\\d*") && str.length() == 11) {// 判断用户输入的电话是否符合标准
friend.setTelephone(str);
} else {
System.out.println("电话号码输入有误，请重新输入！");
continue;
} System.out.println("请输入第" + (i + 1) + "位朋友的邮箱："); try {
str = (new BufferedReader(reader)).readLine();
} catch (IOException e) {
e.printStackTrace();
}
friend.setEmail(str); System.out.println("请输入第" + (i + 1) + "位朋友的公司："); try {
str = (new BufferedReader(reader)).readLine();
} catch (IOException e) {
e.printStackTrace();
}
friend.setCompany(str); friendList.add(friend); i++; System.out.println("是否继续添加？(Y/N):");
String go = "";
try {
go = (new BufferedReader(reader)).readLine();
} catch (IOException e) {
e.printStackTrace();
}
isGo = go.charAt(0);
} while (isGo == 'Y' || isGo == 'y'); for (int j = 0; j < friendList.size(); j++) {
System.out.println(friendList.get(j).toString());
}
}
}

Ⅱ java如何判断手机号码是11为且第一位不是0且不是+86的形式

写在前面：最好还是用正则表达式，简单易懂，易于维护
===================================

//这个方法判断是不是合法的手机号码
public boolean isPhoneNumber(String phoneNumber){
//手机号码长度
int phoneLength=phoneNumber.length();
//第一位是不是0
String phoneOne=phoneNumber.substring(0,1);
//是不是 +86形式
int is86=phoneNumber.indexOf("+86");
//是纯数字 并且长度等于11 并且第一位不是0 并且 不包含+86
return isNumeric(phoneNumber)&&phoneLength==11&&!phoneOne.equals("0")&&is86==-1;
}

//这个方法判断字符串是不是纯数字
public static boolean isNumeric(String str){
Pattern pattern = Pattern.compile("[0-9]*");
Matcher isNum = pattern.matcher(str);
if( !isNum.matches() ){
return false;
}
return true;
}

Ⅲ JAVA怎样用数组实现输入手机号码为11位

顺手写了个，看下是不是你想要的。

publicclassT4{

	Stringname=null;
	int[]nums=null;

	T4(Stringname,int[]nums){

		this.name=name;
		this.nums=nums;

	}

	publicstaticvoidmain(String[]args){
		//正确示例
		T4t=newT4("天王盖地虎",newint[]{1,3,3,7,8,9,8,9,8,7,8});
		if(t.isRight())
			t.print();
		//错误示例1
		T4t1=newT4("张三",newint[]{1});
		if(t1.isRight())
			t1.print();
		//错误示例2
		T4t2=newT4("李四",newint[]{2,3,3,7,8,9,8,9,8,7,8});
		if(t2.isRight())
			t2.print();
		//错误示例3
		T4t3=newT4("王五",newint[]{1,1,3,7,8,9,8,9,8,7,8});
		if(t3.isRight())
			t3.print();
	}

	privatevoidprint(){
		Stringphone="";
		for(inti=0;i<nums.length;i++){
			phone+=(i+"");
		}
		System.out.println("联系人姓名："+name+",电话:"+phone.trim());
	}

	privatebooleanisRight(){
		if(nums.length!=11){
			System.err.println(name+",的手机长度不对");
			returnfalse;
		}elseif(nums[0]!=1){
			System.err.println(name+",的手机号码第一位必须为1");
			returnfalse;
		}elseif(nums[1]!=3&&nums[1]!=5&&nums[1]!=7&&nums[1]!=8){
			System.err.println(name+",的手机号码第二位必须为3/5/7/8");
			returnfalse;
		}

		returntrue;
	}

}