Java Eclipse GUI Tutorial 14 # How to link jcombobox with Sqlite database in Java

Jave Netbeans and Sqlite (mysql) populate jcombobox

In this video I have tried to show how to use jcombobox with database
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[patrickedwinmoran]

Be aware that you'll nyineed to copy it piece by piece into your own GUI version, including remaking all the connections between the GUI pane and the source code (right-click on the combo box for instance, and then fill out the detail according to the text from Peter Ream). Just copying the code will get you nothing but a blank application screen.

[shwetagarg]

I m getting Nullpointer Exception after this.i have written right..please help

[fayazbasha]

my jcombobox has null pointer exception .
my code is
public void Comb()
{
try
{
ion=Connect.dbConnect();
String g="select * from employer";
PreparedStatement ps=ion.prepareStatement(g);
ResultSet r=ps.executeQuery();
while(r.next())
{

}
}catch(Exception i)
{
i.printStackTrace();
}

}
please tell me how can I correct this problem.

[mouradhakmaoui]

my program works well when I compile it, it shows no problem, but when I click the Design tab to switch from source mode to design mode, my eclipse got stuck, sir please any help how to solve this problem? thanks

[jeremiahbabcock]

How would I get the jcombobox to update when I update the database, without having to rerun the program to see the new values from the database in the combobox?

[itms]

getting Nullpointer Exception after this.i have written right..please help
REPLY

[doktoren]

Maybe you can put the code out so we dont have to scroll through the entire video when shit aint working?