126 Discussion / Question Topics
Remove Filter  | Hey everyone, I have been looking for video tutorials on SWING class and pretty much of GUI side in Java .. I found tutorials on Oracle site but they require lots and lots of reading.. if anyone knows a good site that has videos on GUI, please share it.. Time …  |
| | hey everyone, I'm trying to get my head around this Question but it is not making that much sense .. Each receipt is issued from a receipt book whose number is encoded in the first three digits of the ReceiptNo field in the PURCHASE table. For example, the receipt numbered … |
| | Hey, [CODE] CREATE OR REPLACE TRIGGER "TRI_AMOUNT_REDUCTION" AFTER INSERT ON "PURCHASE" FOR EACH ROW BEGIN IF (:NEW.CLIENTNO = 122336) THEN :NEW.AMOUNT := AMOUNT * 0.1; END IF; END; / [/CODE] I have a query that selects my top client then want to pass the clientNo to the trigger. Is it … |
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| | Hi everyone, I've been trying different commands that check inputs that will be entered into the tables I've got. I want to check that Amount/Ename columns can not be NULL. What's <> do in SQL? [CODE] // first command ALTER TABLE Emp ADD CONSTRAINT CK_AMOUNT CHECK ( AMOUNT NOT NULL); … |
| | Hi everyone, I am doing a Java course at uni at the moment and it kinda doesn't make you become a real programmer with the confidence that a programmer should have. I really want to program in Java and any language(not python though because it is not a user-friendly programming … |
| | Hi everyone; I'm working on a c# service that queries the DB and checks if the right info is available for users. It's an Airline tickets reservation system. I am not sure why my code is breaking after it gets the query and it gives an error about sqlclient.. [CODE] … |
| | hey everyone, I'm just having a problem debugging this line and I don't see anything wrong with it. I tried using SelectValue and other ways but nothing seems to be working. The error message I get is that Exception Details: System.FormatException: Input string was not in a correct format. [code] …  |
| | hey everyone, I'm just having a problem debugging this line and I don't see anything wrong with it. I tried using SelectValue and other ways but nothing seems to be working. The error message I get is that Exception Details: System.FormatException: Input string was not in a correct format. [CODE] … |
| | Hi people, I just re-installed Linux on my machine and I am trying to update it by using the command [CODE] sudo apt-get update[/CODE] and the error messages I get in the terminal are [CODE]Err http://security.ubuntu.com natty-security InRelease Err http://extras.ubuntu.com natty InRelease Err http://security.ubuntu.com natty-security Release.gpg Could not resolve 'security.ubuntu.com' …  |
| | Hey everyone, I looked around if anyone has the same error. there are people who have had this error, but I couldn't really get to the point that what causes this error to occur. I thought the data types in my table are the reason and I changed them. But, …  |
| | Hi everyone, I'm just adding these two binary numbers and not sure about the sub-questions(a,b) of the question that are below: Q1 - What is the (5-bit) result of adding the 5-bit unsigned numbers 10001 and 00111? Answer: 11000 Q1a - What is the value of the carry in to … |
| | Hello everyone, I'm just having a problem that is stopping me from doiing my work and I've tried fixing it. I don't know what's really wrong with what I've got typed in visual studio. [code] string connString = @"Data Source=.\SQLEXPRESS;AttachDbFilename='C:\..................\Database1.mdf'; Integrated Security=True; User Instance=True"; SqlConnection conn = new SqlConnection(); conn.ConnectionString … |
| | Hello everyone, I'm trying to make a small application that checks on submission if a user is human or not by just copying what's shown on a page and submitting it for validation. OK, I have a few errors with this piece of code and am unsure how to fix … |
| | G'day everybuddy, I just have a question about how to update a service on the server after changes are made to the code. Cheers, |
| | G'day everyone, I just have a few questions about Java programming language. Before getting started with the question, I was actually doing some reading for my java course and there was an implementation of Coffee vending machine in java. Therefore, the questions came to my mind and these are: Do …  |
| | Hey, I'm getting this error every time I run my program. I dunno what it means and how to fix it. [code] Uncaught error fetching image: java.lang.NullPointerException at sun.awt.image.URLImageSource.getConnection(URLImageSource.java:99) at sun.awt.image.URLImageSource.getDecoder(URLImageSource.java:113) at sun.awt.image.InputStreamImageSource.doFetch(InputStreamImageSource.java:240) at sun.awt.image.ImageFetcher.fetchloop(ImageFetcher.java:172) at sun.awt.image.ImageFetcher.run(ImageFetcher.java:136) [/code] |
| | Hey everyone, my if-statements are working as expected. Actually, they are not working at all. The syntax is right but they are never run. The program terminates before it runs them. [code] public static void main (String args[]){ Scanner input = new Scanner(System.in); Display fName = new Display(); // creating … |
| | Hello, Are we allowed to assign different values to just one variable? For example, gender = [Female, female, fEmale] so if one a user enters any of the specified ones then he/she will be taken to the next step/level. I'm just doing a tute at the moment and coming up … |
| | Hey everyone, Just curious why my little program doesn't go through the if-statement I specified in it. [code] public static void main (String args[]){ Scanner sc = new Scanner(System.in); System.out.println("Enter a value for girls:"); int GIRLS = sc.nextInt(); System.out.println("Enter a value for boys:"); int BOYS = sc.nextInt(); if (BOYS == … |
| | Hello everyone, I have a book called "Java Genesis" and it has some files such as packages, projects and hints to enhance learning. So, I have set up a file structure in Eclipse and it shows that there are errors and warnings. When I tried running a Java Application using … |
| | Hi everyone, I'm using a mk320 logitech that is connected to my laptop wirelessly. When I want to use the built-in keyboard on my windows7 starter, keys are giving me the values as they're expected to give like pressing button p gives me numeric value and likewise for o,l and …  |
| | Hi, How are you doin there? I'm just doing an example here. I wanted to access all elements that our user 'George' has. [code]$players = array( 'George' => array('Age'=>20, 'Hair Color'=>'Black', 'Cars'=>array('BMW', 'Toyota', 'Nissan', 'Shitty Cars lol') ), 'Mikayla' => array('Age'=> 16, 'Hair Color'=> 'Bruntte'), 'Mel'=> array('Age' =>21, 'Hair Color' …  |
| | Hi everyone, I am just having a few issues with Ubuntu system on my machine. It doesn't fix broken packages and everytime, I want to install/remove a software from my machine, it says "can't locate PACKAGE NAME" Now, I want to re-install Ubuntu. I logged into my other OS which … |
| | Hi people, I am so interested in learning PHP as it is a powerful language in the web. I know a little bit of PHP so you can say that I've got an intro to PHP at this stage. What I am really struggling the logic of PHP. What would … |
| | Hey all, I'm just hoping to receive great help from you people.. I'm tryin to fix my PHP coding and it looks good,but the server says that a particular line is broken.. [CODE] <?php $hd = fopen('content.txt', 'r'); $line = fgets($hd); $content = array(); while($line) { $word = explode(',', $line); …  |
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