I added a JComboBox from the palette using netbeans IDE and populated it with contents from mysql database. I also added autocomplete functionality using swingx-all-1.6.5-1
method for populating combobox
public void doPopulateCombo(){
Connection con = Functions.ConnectToDB();
try {
Statement stmt = con.createStatement();
String sqlQuery = "select * from products";
ResultSet rs = stmt.executeQuery(sqlQuery);
while(rs.next()){
String product_name = rs.getString("Product_Name");
cboProducts.addItem(product_name);
}
con.close();
cboProducts.setSelectedIndex(-1);
} catch (Exception e) {
JOptionPane.showMessageDialog(this, "Error populating combo box\n"+e.toString(),
"Error",JOptionPane.ERROR_MESSAGE);
}
}
How do I remove the combobox's arrow button so that it appears like a textbox?
The best I can come up with is putting it into a JPanel that's slightly smaller than it, but depending on the L&F that's not really the best way to do it. Alternatively you could make a class that extends JComboBox, overrides the paint(Graphics g) method and from there calls the paint method of a textbox with the same dimensions. At least, I think you could do that, if you wanted to. Do note that you'd have to update what's in the textbox each time the user selects an option.
A hacky way to fix this would be to create your own implementation of BasicComboBoxUI and override createArrowButton()
public class NoArrowJComboBoxUI extends BasicComboBoxUI {
@Override
protected JButton createArrowButton() {
JButton btn = new JButton();
btn.setPreferredSize(new Dimension(0,0));
btn.setVisible(false);
return btn;
}
}
Then in your existing code:
cboProducts.setSelectedIndex(-1);
cboProducts.setUI(new NoArrowJComboBoxUI());
This implementation should not interfere with autocomplete behavior, however, I haven't tested it myself with autocomplete so I can't say that with certainty.