public void recordFrame(final Connection conn) {
        this.setTitle("寝室财产管理系统1.0--收支记录");
    this.setSize(WIDTH, HEIGHT);
    this.setLocation(x, y);
    this.setBackground(Color.YELLOW);
    this.addWindowListener(new WindowAdapter() {
        public void windowClosing(WindowEvent e) {
            setVisible(false);
        }
    });
    this.setVisible(true);
    this.setResizable(false);
}

TableModel tModel = new AbstractTableModel() {
        //加入此方法，否则JTABLE无法正确判值的类型
    public Class getColumnClass(int column) {
        return java.lang.String.class;    
        }
}