Question

好的，大家都相信这是一个简单的解决方法。

public class function {
    public static void main(String[] args)
    {
        public boolean playButton = true;
        public boolean playMusic() {
            if (playButton) {
                System.out.println("Music"); 
            } else {
                System.out.println("No Music");
            }
    }
}

我想要的只是终端打印音乐。

Answer 1

您应该在'main'方法之外声明'playMusic'函数并从main调用它，尝试这样的事情：

public class function {
    static boolean playButton;
    public static void main(String[] args)
    {
        playButton = true;
        playMusic();
    }
    public static void playMusic() {
        if (playButton) {
            System.out.println("Music"); 
        } else {
            System.out.println("No Music");
        }
    }
}

Answer 2

public class function {
    public static boolean playButton = true;
    public static void playMusic() {
            if (playButton == true) {
                System.out.println("Music"); 
            } else {
                System.out.println("No Music");
            }
    }
    public static void main(String[] args)
    {
       playMusic()
    }
}

Java布尔和函数不起作用

2 个答案: