package javamediaplayer;import javax.swing.UIManager;import java.awt.*;/** * Title:        使用Java制作的媒體播放器 * Description:  這個(gè)播放器利用了Java Media Frame API來(lái)實(shí)現(xiàn)主要功能 * Copyright:    Copyright (c) 2003 * Company:      北京師范大學(xué)繼續(xù)教育學(xué)院99計(jì)算機(jī)應(yīng)用 * @author       郭漢文 * @version      1.0 */public class MediaApp {  boolean packFrame = false;  /**Construct the application*/  public MediaApp() {    MediaFrame frame = new MediaFrame();    //Validate frames that have preset sizes    //Pack frames that have useful preferred size info, e.g. from their layout    if (packFrame) {      frame.pack();    }    else {      frame.validate();    }    //Center the window    Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();    Dimension frameSize = frame.getSize();    if (frameSize.height > screenSize.height) {      frameSize.height = screenSize.height;    }    if (frameSize.width > screenSize.width) {      frameSize.width = screenSize.width;    }    frame.setLocation((screenSize.width - frameSize.width) / 2, (screenSize.height - frameSize.height) / 2);    frame.setVisible(true);  }  /**Main method*/  public static void main(String[] args) {    try {      UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());    }    catch(Exception e) {      e.printStackTrace();    }    new MediaApp();  }}