AuthCodePhone.java

AuthCodePhone.java

import java.util.regex.Pattern;
import java.util.regex.Matcher;

public class AuthCodePhone {

  public static String parseMsg(String msg) {
  	String sensitive = "";

		Pattern p = Pattern.compile(EXP);
		Matcher m = p.matcher(msg);

		boolean bfind = m.find();

		if (bfind) {
			sensitive = m.group(0);
		}

		return sensitive;
	}

	private static final String EXP = "\\d{6}|\\d{4}";
	
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		String msg1 = "1234.";
		
		
		String  findout = AuthCodePhone.parseMsg(msg1);
		System.out.println(findout);
	}

}