Java布爾和功能不能正常工作

Question

好吧，大家可以肯定這是一個簡單的修復。

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"); 
      } 
    } 
} 

我只想讓終端打印出音樂。

Answer 1

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() 
    } 
} 

Answer 2

你應該申報的「playMusic」功能外「主」的方法，並從主調用它，嘗試這樣的事情：

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"); 
     } 
    } 
}