Java tutorial
//package com.java2s; import java.util.regex.Matcher; import java.util.regex.Pattern; import java.util.regex.PatternSyntaxException; public class Main { public static boolean isPhoneLegal(String str) throws PatternSyntaxException { return isChinaPhoneLegal(str) || isHKPhoneLegal(str); } public static boolean isChinaPhoneLegal(String str) throws PatternSyntaxException { String regExp = "^((13[0-9])|(15[^4])|(18[0,2,3,5-9])|(17[0-8])|(147))\\d{8}$"; Pattern p = Pattern.compile(regExp); Matcher m = p.matcher(str); return m.matches(); } public static boolean isHKPhoneLegal(String str) throws PatternSyntaxException { String regExp = "^(5|6|8|9)\\d{7}$"; Pattern p = Pattern.compile(regExp); Matcher m = p.matcher(str); return m.matches(); } }