试图在我的ActionListener中放置一个播放音频方法

时间:2013-03-18 16:04:27

标签: java class user-interface audio actionlistener

我正在尝试将播放方法放在我Audioapp内的ActionListener课程中,我尝试将其放入,但却出错了。

我已在ActionListener上阅读了javadoc但找不到它

这是我的音频:

public class Audioapp extends JApplet // find out how to implement play method into action listener?
{
    public class Sound // Holds one audio file
    {
        private AudioClip song; // Sound player
        private URL songPath; // Sound path
        Sound(String filename)
        {
            try
            {
                songPath = new URL(getCodeBase(),"G:\\Uni\\Programming\\Rolling assignements\\Week0\\Programming week21");  // This is the place were im getting error
                song = Applet.newAudioClip(songPath); // Load the Sound
            }
            catch(Exception e){e.printStackTrace();} 
        }
        public void playSound()
        {
            song.play(); // Play
        }
    }
}

这是我的actionListener

class PlayStoHandler implements ActionListener {
    public void actionPerformed(ActionEvent event) {
        String computerRand = sps.computerChoice();
        txtComputerRand.setText(computerRand);
        String result = sps.play(Sps.ROCK);
        txtResult.setText(result);

        scis.setVisible(false);
        open.setVisible(false);
        stone.setVisible(true);
        pap.setVisible(false);
        win.setVisible(false);
        none.setVisible(false);
        lose.setVisible(false);

        if (result == "User Wins"){
            win.setVisible(true);

                              song.play(); // here i tried putting the song.play in this if section, the error I got was "song cannot be resolved"
        }

        else if (result == "Draw"){
            none.setVisible(true);
        }
        else {
            lose.setVisible(true);
        }
    }

我是初学者,所以这很可能是一个非常愚蠢的基本错误

任何帮助将不胜感激

2 个答案:

答案 0 :(得分:1)

songPath = new URL(getCodeBase(),"G:\\Uni\\Programming\\Rolling assignements\\Week0\\Programming week21");

URL构造函数需要第二个字符串表示相对URL,而您已放置文件路径。网址总是有正斜杠,基于file:的网址没什么意义(WAV托管在您的网站上,而不是最终用户的HD)。

如果applet正在HTML网站的根目录下加载,而HTML中没有声明codebase,则wav名为moo.wav,位于名为{{的子目录中1}}正确的路径是:

Week0/Programming week21

但为了让事情变得更简单,至少在目前,将HTML,applet 剪辑放在 同一目录 并使用:

songPath = new URL(getCodeBase(),"Week0/Programming week21/moo.wav");

答案 1 :(得分:0)

song是私有的。您创建了一种播放声音的方法,因此请使用它。

获取Audioapp的实例并运行playSound()方法。