How to generate a secure random safe URL in Java, using apache libary

RandomURLKeyGenerator.java

import org.apache.commons.codec.binary.Base64;

import java.security.SecureRandom;

/**
 * Created by pitaside on 7/12/2015.
 */
public class RandomURLKeyGenerator {

    public static String generateURLKey(int length) {

        SecureRandom generator = new SecureRandom();
        //get 32 byte number, thats a  lot of byte
        synchronized (generator) {
            final byte[] randomByte = new byte[length];
            generator.nextBytes(randomByte);
            return Base64.encodeBase64URLSafeString(randomByte);

        }
    }
}