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();

  }

//打開所有書籍列表窗口
  void jMenuItemAllBook_actionPerformed(ActionEvent e) {
    bookList dlg = new bookList();
    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();

  }

  void jMenuFileExit_actionPerformed(ActionEvent e) {
    System.exit(0);
  }

}

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);
  }
}

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

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

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

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

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

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