/** * 驗證固定電話號碼的合法性 * @author jy */package phone;import java.util.regex.Matcher;import java.util.regex.Pattern;public class PhoneTest {  public static boolean isPhone(String str) {    Pattern p1 = null, p2 = null;    Matcher m = null;    boolean isPhone = false;    p1 = Pattern.compile("^[0][1-9]{2,3}-[0-9]{5,10}$"); // 驗證帶區號的    p2 = Pattern.compile("^[1-9]{1}[0-9]{5,8}$");     // 驗證沒有區號的    if (str.length() > 9) {     m = p1.matcher(str);     isPhone = m.matches();    } else {      m = p2.matcher(str);      isPhone = m.matches();    }    return isPhone;  }    public static void main(String[] args) {    String phone = "0770-88889999";   if(isPhone(phone)){     System.out.println(phone+"是符合的電話號碼");   }else {     System.out.println(phone+"不符合");   }  }}

public boolean isNumeric(String str){   Pattern pattern = Pattern.compile("[0-9]*");   Matcher isNum = pattern.matcher(str);  if( !isNum.matches() ){    return false;   }   return true; }