java代码随机生成一个用户昵称

好的，以下是一个随机生成用户昵称的 Java 代码示例：

import java.util.Random;

public class RandomNicknameGenerator {
    
    private static final String[] ADJECTIVES = {"happy", "funny", "crazy", "silly", "fluffy", "bouncy", "spicy", "fancy", "shiny", "sunny"};
    private static final String[] NOUNS = {"cat", "dog", "bird", "fish", "panda", "tiger", "lion", "elephant", "monkey", "penguin"};
    
    public static String generateNickname() {
        Random rand = new Random();
        String adjective = ADJECTIVES[rand.nextInt(ADJECTIVES.length)];
        String noun = NOUNS[rand.nextInt(NOUNS.length)];
        int number = rand.nextInt(1000);
        
        return adjective + "_" + noun + "_" + number;
    }
    
    public static void main(String[] args) {
        String nickname = generateNickname();
        System.out.println("Random nickname: " + nickname);
    }
}

运行以上代码，将会输出一个随机生成的用户昵称，例如：`crazy_tiger_42`。