Reputation: 5942

Swing how to close JPanel programmatically

My main class extends JPanel and I create a table and a button on this panel.Now I want to close this panel when the user press it.On the internet closing examples are about JFrame.Is there solution for JPanel?

There is a panel
On Panel there is a table and a button
I add an action listener to the button
I want to close panel if user press button

This is my code now I want when the user press the btnDelete then it close the panel

public class ListUsers extends JPanel {

ResultSet rs; ClientDAO dao; JScrollPane scrollPane; JTable table; Object columnId;

public ListUsers() throws SQLException {

dao = new ClientDAO();
rs=dao.getUsers();
ResultSetMetaData md = rs.getMetaData();  
int columnCount = md.getColumnCount();  

Vector<String> columns = new Vector(columnCount);  

//store column names  
for(int i=1; i<=columnCount; i++)  
    columns.add(md.getColumnName(i));  

Vector data = new Vector();  
Vector row;  

//store row data  
while(rs.next())  
{  
    row = new Vector(columnCount);  
    for(int i=1; i<=columnCount; i++)  
    {  
        row.add(rs.getString(i));  
    }  
    data.add(row);  
}  





table = new JTable(data, columns);  
table.setPreferredScrollableViewportSize(new Dimension(500, 70));  
table.setFillsViewportHeight(true);  
table.setVisible(true);  
table.validate();
table.setEnabled(true);
add(table);




table.addMouseListener(new MouseAdapter() {
       public void mouseClicked(MouseEvent e) {





           final JDialog dialog = new JDialog();
           dialog.setSize(300, 200);
           dialog.setLayout(null);


           columnId = table.getValueAt(table.getSelectedRow(),0);

           Integer no = new Integer(columnId.toString());
           final int i =no.intValue();

           String columnNo =columnId.toString();
           String name = table.getValueAt(table.getSelectedRow(),1).toString();
           String surname = table.getValueAt(table.getSelectedRow(),2).toString();
           String gender = table.getValueAt(table.getSelectedRow(),3).toString();


           String labelText ="<html>Name :<b>"+name+"</b><br>Surname :<b>"+surname+"</b><br>Gender :<b>"+gender+"</b></html>";
           JLabel label=new JLabel(labelText);
           label.setVisible(true);
           label.setBounds(10,  10,300, 100);
           dialog.add(label);



           JButton btnUpdate= new JButton("Update");
           btnUpdate.setVisible(true);
           btnUpdate.setBounds(10,100,100,35);


           JButton    btnDelete= new JButton("Delete");
           btnDelete.setVisible(true);
           btnDelete.setBounds(150,100,100,35);




           dialog.add(btnDelete);
           dialog.add(btnUpdate);


           btnUpdate.addActionListener(new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent e) {
                dialog.setVisible(false);

            }
        });


           btnDelete.addActionListener(new ActionListener() {

            @Override
            public void actionPerformed(ActionEvent e) {




                try {
                    dao.deleteUser(i);
                } catch (SQLException e1) {
                    // TODO Auto-generated catch block
                    e1.printStackTrace();
                }
                dialog.setVisible(false);


                setVisible(false);
                System.exit(0);



            }
        });

           dialog.setVisible(true);

Upvotes: 6

Answers (5)

Felipe Gallardo

Reputation: 11

When you extends a JPanel you import the necesary :

 JComponent comp = (JComponent) e.getSource();
  Window win = SwingUtilities.getWindowAncestor(comp);
  win.dispose();

but when you extend for a JFrame you just use this.dispose() or yourFrameInstance.dispose();

Upvotes: 0

Lefteris Bab

Reputation: 787

public void actionPerformed(ActionEvent e) {
  JComponent comp = (JComponent) e.getSource();
  Window win = SwingUtilities.getWindowAncestor(comp);
  win.dispose();
}

e.getSource(): Get Java Component

getWindowAncestor: Returns the first Window ancestor of Component

win.dispose(): Releases all of the native screen resources used by this its subcomponents, and all of its owned children.

Upvotes: 8