/**
 * @project
 * @Description
 * @Author songwp
 * @Date 2022/9/15 17:06
 * @Version 1.0.0
 **/
public class PhoneUtil {

    /**
     * 驗證手機號是否合法
     * @return
     */
    public static boolean isMobileNum(String mobile){
        if (mobile.length() != 11) {
            return false;
        }else{
            /**
             * 移動號段正則表達式
             */
            String pat1 = "^((13[4-9])|(147)|(15[0-2,7-9])|(178)|(18[2-4,7-8]))\\d{8}|(1705)\\d{7}$";
            /**
             * 聯(lián)通號段正則表達式
             */
            String pat2  = "^((13[0-2])|(145)|(15[5-6])|(176)|(18[5,6]))\\d{8}|(1709)\\d{7}$";
            /**
             * 電信號段正則表達式
             */
            String pat3  = "^((133)|(153)|(177)|(18[0,1,9])|(149))\\d{8}$";
            /**
             * 虛擬運營商正則表達式
             */
            String pat4 = "^((170))\\d{8}|(1718)|(1719)\\d{7}$";

            Pattern pattern1 = Pattern.compile(pat1);
            Matcher match1 = pattern1.matcher(mobile);
            boolean isMatch1 = match1.matches();
            if(isMatch1){
                return true;
            }
            Pattern pattern2 = Pattern.compile(pat2);
            Matcher match2 = pattern2.matcher(mobile);
            boolean isMatch2 = match2.matches();
            if(isMatch2){
                return true;
            }
            Pattern pattern3 = Pattern.compile(pat3);
            Matcher match3 = pattern3.matcher(mobile);
            boolean isMatch3 = match3.matches();
            if(isMatch3){
                return true;
            }
            Pattern pattern4 = Pattern.compile(pat4);
            Matcher match4 = pattern4.matcher(mobile);
            boolean isMatch4 = match4.matches();
            if(isMatch4){
                return true;
            }
            return false;
        }
    }
}

public static void main(String[] args) {
    boolean mobileNum = isMobileNum("18740458584");
    System.out.println("驗證自己的手機號是否合法："+mobileNum);

    boolean mobileNum1 = isMobileNum("1554");
    System.out.println("驗證少于11位數(shù)字通過驗證是否合法："+mobileNum1);

    boolean mobileNum2 = isMobileNum("1554AAAAAAAAAA");
    System.out.println("驗證大于11位數(shù)字且含字母通過驗證是否合法："+mobileNum2);
}

驗證自己的手機號是否合法：true
驗證少于11位數(shù)字通過驗證是否合法：false
驗證大于11位數(shù)字且含字母通過驗證是否合法：false