Java random string

random

Add dependency

<!-- https://mvnrepository.com/artifact/org.apache.commons/commons-lang3 -->
<dependency>
    <groupId>org.apache.commons</groupId>
    <artifactId>commons-lang3</artifactId>
    <version>3.17.0</version>
</dependency>

package com.example;

import org.apache.commons.lang3.RandomStringUtils;

import java.util.Collections;
import java.util.List;
import java.util.stream.Collectors;

public class Utils {

    public String generateCommonLangPassword() {
        String upperCaseLetters = RandomStringUtils.random(2, 65, 90, true, true);
        String lowerCaseLetters = RandomStringUtils.random(2, 97, 122, true, true);
        String numbers = RandomStringUtils.randomNumeric(2);
        String specialChar = RandomStringUtils.random(2, 33, 47, false, false);
        String totalChars = RandomStringUtils.randomAlphanumeric(2);
        String combinedChars = upperCaseLetters.concat(lowerCaseLetters)
                .concat(numbers)
                .concat(specialChar)
                .concat(totalChars);
        List<Character> pwdChars = combinedChars.chars()
                .mapToObj(c -> (char) c)
                .collect(Collectors.toList());
        Collections.shuffle(pwdChars);
        String password = pwdChars.stream()
                .collect(StringBuilder::new, StringBuilder::append, StringBuilder::append)
                .toString();
        return password;
    }

}