请用java格式输出一个随机生成的邮件信息
user
```java
public class RandomEmailGenerator {
    public static void main(String[] args) {
        String[] domains = {"example.com", "test.org", "sample.net"};
        String[] prefixes = {"user", "test", "info"};
        String[] randomWords = {"hello", "world", "message", "content"};

        String randomDomain = domains[(int) (Math.random() * domains.length)];
        String randomPrefix = prefixes[(int) (Math.random() * prefixes.length)];
        String randomWord = randomWords[(int) (Math.random() * randomWords.length)];

        String email = randomPrefix + "@" + randomDomain;
        String message = "Subject: " + randomWord + "\n\n" + "This is a randomly generated message content.";

        System.out.println("Email: " + email);
        System.out.println("Message:\n" + message);
    }
}
```
assistant