Dimension frmSize = getSize();
    Point loc = getLocation();
    dlg.setLocation( (frmSize.width - dlgSize.width) / 2 + loc.x,
                    (frmSize.height - dlgSize.height) / 2 + loc.y);
    dlg.pack();
    dlg.show();

  }
//打開書籍信息添加窗口
  void jMenuItemBookAdd_actionPerformed(ActionEvent e) {
    bookAdd dlg = new bookAdd( );
       Dimension dlgSize = dlg.getPreferredSize();
       Dimension frmSize = getSize();
       Point loc = getLocation();
       dlg.setLocation( (frmSize.width - dlgSize.width) / 2 + loc.x,
                       (frmSize.height - dlgSize.height) / 2 + loc.y);
       dlg.pack();
       dlg.show();

  }
//打開書籍信息更新窗口
  void jMenuItemBookUpdate_actionPerformed(ActionEvent e) {
    bookUpdate dlg = new bookUpdate( );
       Dimension dlgSize = dlg.getPreferredSize();
       Dimension frmSize = getSize();
       Point loc = getLocation();
       dlg.setLocation( (frmSize.width - dlgSize.width) / 2 + loc.x,
                       (frmSize.height - dlgSize.height) / 2 + loc.y);
       dlg.pack();
       dlg.show();

  }
//打開書籍刪除窗口
  void jMenuItemBookDelete_actionPerformed(ActionEvent e) {
       bookDelete dlg = new bookDelete( );
       Dimension dlgSize = dlg.getPreferredSize();
       Dimension frmSize = getSize();
       Point loc = getLocation();
       dlg.setLocation( (frmSize.width - dlgSize.width) / 2 + loc.x,
                       (frmSize.height - dlgSize.height) / 2 + loc.y);
       dlg.pack();
       dlg.show();

  }
//打開書籍出借 窗口
  void jMenuItemBookBorrow_actionPerformed(ActionEvent e) {
    borrowBook dlg = new borrowBook( );
         Dimension dlgSize = dlg.getPreferredSize();
         Dimension frmSize = getSize();
         Point loc = getLocation();
         dlg.setLocation( (frmSize.width - dlgSize.width) / 2 + loc.x,
                         (frmSize.height - dlgSize.height) / 2 + loc.y);
         dlg.pack();
         dlg.show();
  }
//打開書籍出借信息修改窗口
  void jMenuItemBookBorrowUpdate_actionPerformed(ActionEvent e) {
    borrowInfoUpdate dlg = new borrowInfoUpdate( );
            Dimension dlgSize = dlg.getPreferredSize();
            Dimension frmSize = getSize();
            Point loc = getLocation();
            dlg.setLocation( (frmSize.width - dlgSize.width) / 2 + loc.x,
                            (frmSize.height - dlgSize.height) / 2 + loc.y);
            dlg.pack();
            dlg.show();
  }
//打開書籍還入窗口
  void jMenuItemBookReturn_actionPerformed(ActionEvent e) {
    returnBook dlg = new returnBook( );
              Dimension dlgSize = dlg.getPreferredSize();
              Dimension frmSize = getSize();
              Point loc = getLocation();
              dlg.setLocation( (frmSize.width - dlgSize.width) / 2 + loc.x,
                              (frmSize.height - dlgSize.height) / 2 + loc.y);
              dlg.pack();
              dlg.show();

  }
//打開書籍還入信息查詢窗口
  void jMenuItemBookReturnInfo_actionPerformed(ActionEvent e) {
    returnInfoList dlg = new returnInfoList( );
             Dimension dlgSize = dlg.getPreferredSize();
             Dimension frmSize = getSize();
             Point loc = getLocation();
             dlg.setLocation( (frmSize.width - dlgSize.width) / 2 + loc.x,
                             (frmSize.height - dlgSize.height) / 2 + loc.y);
             dlg.pack();
             dlg.show();

  }
//打開書籍還入信息修改窗口
  void jMenuItemBookReturnUpdate_actionPerformed(ActionEvent e) {
    returnInfoUpdate dlg = new returnInfoUpdate( );
                 Dimension dlgSize = dlg.getPreferredSize();
                 Dimension frmSize = getSize();
                 Point loc = getLocation();
                 dlg.setLocation( (frmSize.width - dlgSize.width) / 2 + loc.x,
                                 (frmSize.height - dlgSize.height) / 2 + loc.y);
                 dlg.pack();
                 dlg.show();

  }

}

class BookManagerMain_this_windowAdapter
    extends java.awt.event.WindowAdapter {
  BookManagerMain adaptee;

  BookManagerMain_this_windowAdapter(BookManagerMain adaptee) {
    this.adaptee = adaptee;
  }

  public void windowOpened(WindowEvent e) {
    adaptee.this_windowOpened(e);
  }
}

class BookManagerMain_jMenuItemLogin_actionAdapter
    implements java.awt.event.ActionListener {
  BookManagerMain adaptee;

  BookManagerMain_jMenuItemLogin_actionAdapter(BookManagerMain adaptee) {
    this.adaptee = adaptee;
  }

  public void actionPerformed(ActionEvent e) {
    adaptee.jMenuItemLogin_actionPerformed(e);
  }
}

class BookManagerMain_jMenuItemUserAdd_actionAdapter
    implements java.awt.event.ActionListener {
  BookManagerMain adaptee;

  BookManagerMain_jMenuItemUserAdd_actionAdapter(BookManagerMain adaptee) {
    this.adaptee = adaptee;
  }

  public void actionPerformed(ActionEvent e) {
    adaptee.jMenuItemUserAdd_actionPerformed(e);
  }
}

class BookManagerMain_jMenuItemUserUpdate_actionAdapter
    implements java.awt.event.ActionListener {
  BookManagerMain adaptee;

  BookManagerMain_jMenuItemUserUpdate_actionAdapter(BookManagerMain adaptee) {
    this.adaptee = adaptee;
  }

  public void actionPerformed(ActionEvent e) {
    adaptee.jMenuItemUserUpdate_actionPerformed(e);
  }
}

class BookManagerMain_jMenuItemUserDelete_actionAdapter
    implements java.awt.event.ActionListener {
  BookManagerMain adaptee;

  BookManagerMain_jMenuItemUserDelete_actionAdapter(BookManagerMain adaptee) {
    this.adaptee = adaptee;
  }

  public void actionPerformed(ActionEvent e) {
    adaptee.jMenuItemUserDelete_actionPerformed(e);
  }
}

class BookManagerMain_jMenuItemBookAdd_actionAdapter implements java.awt.event.ActionListener {
  BookManagerMain adaptee;

  BookManagerMain_jMenuItemBookAdd_actionAdapter(BookManagerMain adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jMenuItemBookAdd_actionPerformed(e);
  }
}

class BookManagerMain_jMenuItemBookUpdate_actionAdapter implements java.awt.event.ActionListener {
  BookManagerMain adaptee;

  BookManagerMain_jMenuItemBookUpdate_actionAdapter(BookManagerMain adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jMenuItemBookUpdate_actionPerformed(e);
  }
}

class BookManagerMain_jMenuItemBookDelete_actionAdapter implements java.awt.event.ActionListener {
  BookManagerMain adaptee;

  BookManagerMain_jMenuItemBookDelete_actionAdapter(BookManagerMain adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jMenuItemBookDelete_actionPerformed(e);
  }
}

class BookManagerMain_jMenuItemBookBorrow_actionAdapter implements java.awt.event.ActionListener {
  BookManagerMain adaptee;

  BookManagerMain_jMenuItemBookBorrow_actionAdapter(BookManagerMain adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jMenuItemBookBorrow_actionPerformed(e);
  }
}

class BookManagerMain_jMenuItemBookBorrowUpdate_actionAdapter implements java.awt.event.ActionListener {
  BookManagerMain adaptee;

  BookManagerMain_jMenuItemBookBorrowUpdate_actionAdapter(BookManagerMain adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jMenuItemBookBorrowUpdate_actionPerformed(e);
  }
}

class BookManagerMain_jMenuItemBookReturn_actionAdapter implements java.awt.event.ActionListener {
  BookManagerMain adaptee;

  BookManagerMain_jMenuItemBookReturn_actionAdapter(BookManagerMain adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jMenuItemBookReturn_actionPerformed(e);
  }
}

class BookManagerMain_jMenuItemBookReturnUpdate_actionAdapter implements java.awt.event.ActionListener {
  BookManagerMain adaptee;

  BookManagerMain_jMenuItemBookReturnUpdate_actionAdapter(BookManagerMain adaptee) {
    this.adaptee = adaptee;
  }
  public void actionPerformed(ActionEvent e) {
    adaptee.jMenuItemBookReturnUpdate_actionPerformed(e);
  }
}