Main.java Source code

Introduction

Here is the source code for Main.java

Source

//package com.java2s;
import android.text.TextUtils;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
    public static String patternCode(String patternContent) {
        if (TextUtils.isEmpty(patternContent)) {
            return null;
        }
        Pattern p = Pattern.compile("(?<!\\d)\\d{4}(?!\\d)");
        Matcher matcher = p.matcher(patternContent);
        if (matcher.find()) {
            return matcher.group();
        }
        return null;
    }
}