javaSwing项目 验证邮箱手机号数字工具类

/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */
package com.hwj.util;

/**
 *
 * @author hwj
 */
public class StringUtil {

    public static boolean validateNull(String s) {
        if (s == "" || s.length() == 0) {
            return false;
        } else {
            return true;
        }
    }

    //2 数字格式
    public static boolean validateDigit(String s) {
        //验证数字
        String regex = "^(\\d+)|(\\d+\\.\\d+)$";
        if (s.matches(regex)) {
            return true;
        } else {
            return false;
        }
    }

    public static boolean Length(String s) {
        if (s.length() > 10) {
            return false;
        } else {
            return true;
        }
    }

    public static boolean isEmail(String s) {
        String regex = "^([a-z0-9A-Z]+[-|_|\\.]?)+[a-z0-9A-Z]@([a-z0-9A-Z]+(-[a-z0-9A-Z]+)?\\.)+[a-zA-Z]{2,}$";
        if (s.matches(regex)) {
            return true;
        } else {
            return false;
        }
    }
    public static boolean isPhone(String s){
       String regex="^(((13[0-9])|(15([0-3]|[5-9]))|(18[0,5-9]))\\d{8})|(0\\d{2}-\\d{8})|(0\\d{3}-\\d{7})$";
       if(s.matches(regex)){
         return true;
       }else{
          return false;
       }
    }

//    public static void main(String args[]) {
//        String s = "[email protected]";
//        String phone="1358373533";
//        boolean test = isEmail(s);
//        boolean t=isPhone(phone);
//        System.out.println("邮箱："+test);
//        System.out.println("phone:"+t);
//    }
}

变量regex为正则表达式