用applet创建播放器，在界面上设置播放、循环、停止按钮，音频文件放在该applet同一目录下，用URL类来定位获取音频文件进行播放。Java支持的音频格式有：wav、AIFF、MIDI、AU和RMF，这里使用常见的wav格式。-Create a player with the applet, set the play in the interface, loop, stop button, the audio files in the same directory as the applet, using the URL class to locate the audio file for playback. Java support for audio formats: wav, AIFF, MIDI, AU, and RMF, wav format commonly used here.