在过去的两天里,我尝试了很多想法,但我无法刷新框架:/我连接到我的数据库并进行选择查询......在我的控制台窗口中,我在我的表单上也看到了 4 个 ID-s。 .. 在我的数据库中创建另一个数据后,在我的控制台窗口中我看到 5 个 ID-s 但在我的表格 4 上......如果我把frame.setvisible
按钮放在另一个表格上......
这是我的课:
JLabel timeLabel;
private JPanel contentPane;
private ArrayList<JLabel> lbllist= new ArrayList<JLabel>();
private ArrayList<JButton> btnlist= new ArrayList<JButton>();
static int brojac = 0;
private JLabel lblNewLabel;
private JButton btnRefresh;
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
Mainframe = new Main();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
//constructor (I need every time to see data from the database)
public Main() {
getContentPane().setLayout(null);
lblNewLabel = new JLabel("New label");
lblNewLabel.setBounds(0, 185, 46, 14);
getContentPane().add(lblNewLabel);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 800, 300);
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
getContentPane().removeAll();
btnRefresh = new JButton("Refresh");
btnRefresh.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent arg0) {
do_btnRefresh_actionPerformed(arg0);
}
});
btnRefresh.setBounds(335, 228, 89, 23);
contentPane.add(btnRefresh);
EntityManager em = Connection.getEmf().createEntityManager();
TypedQuery<Entity> query = em.createQuery(
"select n from Entityn where finished= 0",
PokusajNarudzbe.class);
List<Entity> resultList = query.getResultList();
int a = 20;
for (Entitypokusaj entity: resultList) {
System.err.println(entity.getName());//here i see all data (but not
//in the form
JLabel list= new JLabel(entity.getBrojName());
lista.setBounds(10, a, 200, 20);
lista.setText(entity.getNarudzbaID() + " "
+ entity.Name() + " ";
lbllist.add(list);
getContentPane().add(list);
list.setVisible(true);
list.repaint();
list.revalidate();
JButton btn= new JButton(entity.getName());
btn.setBounds(500, a, 200, 20);
btn.setText("Gotovo");
btnlist.add(btn);
getContentPane().add(btn);
a += 20;
gumb.setVisible(true);
gumb.repaint();
gumb.revalidate();
}
getContentPane().repaint();
resultList.clear();
em.clear();
em.close();
}
` protected void do_btnRefresh_actionPerformed(ActionEvent arg0) {
Main frame1 = new Main();
SwingUtilities.updateComponentTreeUI(frame1);
frame1.invalidate();
frame1.validate();
frame1.repaint();
// frame1.revalidate();
// frame1.setVisible(true); (if I uncomment this another form apears...)
}
@Override
public int read(CharBuffer arg0) throws IOException {
// TODO Auto-generated method stub
return 0;
}
}
我能做些什么?