Probably a simple resultset problem???
Hi everyone, basically when i select a shop from a combo box it populates the table with employees of this shop, if there are no employees in the shop (nothing in the result set) i would like an error message to be displayed telling the user there are no employees within that shop. However im having problems with two varieties of code to do this, see below:
//PROBLEM ONE: This code shows the correct error message and shows the employees but only the employees after the first ame in the result set (for example if 4 rows in result set only 3 are displayed)
JComboBox combo = (JComboBox)e.getSource();
String shopName = (String)combo.getSelectedItem();
try {
ResultSet eID = al.convertShopName(shopName);
String id2 = "";
while (eID.next()) {
id2 = eID.getObject(1).toString();
ResultSet empNames2 = al.getAvailableNames(id2);
if (!empNames2.next()) { //This is used to show error message
JOptionPane.showMessageDialog(null, "There are no available employees within the selected shop", "Error Message",
JOptionPane.ERROR_MESSAGE);
else {
model.addData(empNames2);
table = new JTable(model);
for(int i = 0; i < column_count; i++) {
table.getColumnModel().getColumn (i).setPreferredWidth (200);
catch (SQLException sql2) {
System.out.println("Failed while re-populating JTable with your staff");
//PROBLEM TWO: In this option i have out the error message code and tried to change it but now all the correct employees are displayed for every shop but an error message it is not displayed:
JComboBox combo = (JComboBox)e.getSource();
String shopName = (String)combo.getSelectedItem();
try {
ResultSet eID = al.convertShopName(shopName);
String id2 = "";
while (eID.next()) {
id2 = eID.getObject(1).toString();
ResultSet empNames2 = al.getAvailableNames(id2);
if (empNames2 == null) {//Changed it to this but DOESNT WORK
JOptionPane.showMessageDialog(null, "There are no available employees within the selected shop", "Error Message",
JOptionPane.ERROR_MESSAGE);
else {
model.addData(empNames2);
table = new JTable(model);
for(int i = 0; i < column_count; i++) {
table.getColumnModel().getColumn (i).setPreferredWidth (200);
catch (SQLException sql2) {
System.out.println("Failed while re-populating JTable with your staff");
Can anyone help where by i can show all employees and also the error message
Thanks in advance
JComboBox combo = (JComboBox)e.getSource();
String shopName =
tring shopName = (String)combo.getSelectedItem();
try {
ResultSet eID = al.convertShopName(shopName);
String id2 = "";
while (eID.next()) {
id2 = eID.getObject(1).toString();
}The above sets id2 to the first column from the last row. That's all it does. If you have 100 rows, the first 99 will be skipped. Is that what you want?
>
ResultSet empNames2 = al.getAvailableNames(id2);
if (!empNames2.next()) { //This is used to show
ow error message
JOptionPane.showMessageDialog(null, "There are no no available employees within the selected shop",
"Error Message",
JOptionPane.ERROR_MESSAGE);
else {
model.addData(empNames2);
table = new JTable(model); Okay, I assume addData does rs.next() and extracts from the ResultSet. But look, in the "if", you're doing rs.next() once. If the first thing you do inside of addData, then you call next() in the if, and then immediately call next() again, so you never do anything with the first one.
A couple of possibile solutions:
* inside addData, do the gets first, and the next() at the end of the loop. You'll probably have to adjust your loop termination test.
* Don't check first, just call addData, and have it return the number of rows added, or a boolean for whether it added any, use that result to decide whether to throw the exception.
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www.alt-web.com/
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}The above function is still a work in progress, but is almost there. -
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No fuss no muss. But if we can figure out how the two even length columns layout works above, I'd say that's the smart, modern way to deal with this. -
I left it with with them because they needed to fix a couple of things because I had problems with random shut downs and such. They told me they replaced a buncha stuff.
Anyway, since I got it back, when I go onto my desktop and click on an icon it won't open. I have to go into file and open it or right click and open it. And for some reason, when I double click the top portion of a window, it doesn't minmize like it used to?
How can I fix this?
It's become really annoying.
I'd appreciate some help.
Thanks!! (;Okay.
How to reset the PRAM - quoted from the KB article:
Resetting PRAM and NVRAM
Shut down the computer.
Locate the following keys on the keyboard: Command, Option, P, and R. You will need to hold these keys down simultaneously in step 4.
Turn on the computer.
Press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears.
Hold the keys down until the computer restarts and you hear the startup sound for the second time.
Release the keys.
Repairing permissions:
Open Finder -> Applications -> Utilities and click on Disk Utility. Click on your hard drive and then the First Aid tab (you should be there already) and then click the Repair Permissions button.
You know how to set the System Preferences, right? Click on the Apple logo, then click on System Preferences, click on Appearance, and there's a little checkbox that says "Minimize when double-clicking a title bar." You wanna make sure that's checked.
This should help. -
Probably a simple problem to fix [solved]
I am running GNOME on the latest arch 32-bit iso and for some reason I get this error every time I try to read from a cd/dvd or usb drive. any ideas?
Cannot mount volume.
Error org.freedesktop.DBus.Error.AccessDenied.
A security policy in place prevents this sender from sending this message to this recipient, see message bus configuration file (rejected message had interface "org.freedesktop.Hal.Device.Volume" member "Mount" error name "(unset)" destination "org.freedesktopHal")
Last edited by tony5429 (2007-06-09 14:46:26)thanks. silly me..i ran
$gpasswd -a username storage optical
and it didnt add me to both. i see now that it must be run as 2 separate commands. thanks everyone
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