Java:从字符串数组中挑选随机短语

import java.util.Random;

public class RandomPhraseSelector {
    public static void main(String[] args) {
        // 定义一个字符串数组
        String[] phrases = {
            "Hello, World!",
            "Keep coding!",
            "Java is awesome!",
            "Random is fun!"
        };

        // 创建Random对象
        Random random = new Random();

        // 生成随机索引
        int randomIndex = random.nextInt(phrases.length);

        // 获取随机短语
        String randomPhrase = phrases[randomIndex];

        // 输出随机短语
        System.out.println("Random Phrase: " + randomPhrase);
    }
}

if (phrases.length > 0) {
    int randomIndex = random.nextInt(phrases.length);
    String randomPhrase = phrases[randomIndex];
    System.out.println("Random Phrase: " + randomPhrase);
} else {
    System.out.println("The array is empty.");
}

Random random = new Random(42); // 使用固定的种子