check Password by regex - Java java.util.regex

Java examples for java.util.regex:Match Password

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Description

check Password by regex

Demo Code


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

public class Main {

    public static boolean checkPassword(String password) {
        if (isStringEmpty(password)) {
            return false;
        }// w w w  . j ava 2s  . com
        Pattern p = Pattern.compile("[a-z0-9A-Z_]{6,20}");
        Matcher m = p.matcher(password);
        if (!m.matches()) {
            return false;
        }
        return true;
    }

    public static boolean isStringEmpty(String str) {
        if (str == null || str.length() == 0) {
            return true;
        }
        return false;
    }
}

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