在Java项目中使用 swing制作一个音乐播放器

package com.baiting;import java.awt.Dimension;import java.awt.Toolkit;import com.baiting.menu.CloseWindow;public abstract class MusicWindow extends Music {  protected MusicFrame musicFrame;  private String title; private int locationX; private int locationY;  public MusicWindow() { title = getConfigMap().get("title").toString(); defaultLocation(); }  public MusicWindow(String title,int width,int height) { this.title = title; setWidth(width); setHeight(height); defaultLocation(); }  public MusicWindow(String title,int width,int height,int locationX,int locationY) { this.title = title; setWidth(width); setHeight(height); this.locationX = locationX; this.locationY = locationY; }  private void defaultLocation() { Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); locationX = (screenSize.width-getWidth())/2; locationY = (screenSize.height-getHeight())/2; }  protected MusicFrame createWindow() { musicFrame = new MusicFrame(); musicFrame.setTitle(title); musicFrame.setSize(getWidth(), getHeight()); //musicFrame.setLocation(locationX, locationY); musicFrame.setLocationRelativeTo(null); musicFrame.addWindowListener(new CloseWindow()); musicFrame.setMinimumSize(new Dimension(600, 450)); musicFrame.setVisible(true); return musicFrame; } public String getTitle() { return title; } public void setTitle(String title) { this.title = title; } public int getLocationX() { return locationX; } public void setLocationX(int locationX) { this.locationX = locationX; } public int getLocationY() { return locationY; } public void setLocationY(int locationY) { this.locationY = locationY; }   }