32,205 Topics
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 | Hi, I'm using ` int TxtAge = Integer.parseInt(tfAge.getText().trim());`to get value from my textfield and search it in database. Then, I'm using `Integer age = Integer.parseInt(stringTokenizer.nextElement().toString());` to go to next attributes in my database. I have no problem using those codes for textfield but when I'm using the JComboBox the result … |
 | Hi DW I'm creating an ATM program and now I want to call the Dispensor to dispense the selected amount from the options provided. The main problem here is importing this `import atm.input.CashDispenser; ` the rest of the code is fine. here is the full code: import atm.input.CashDispenser; import java.util.Scanner; … |
| | Hi, I need help in running a software, thay have plugins in the from of jar files. which I dont know how to run and execute. I have JDK installed. Please suggest. Thank you so much. |
 | i saw the docs for both .. but found the terms a bit hard to get. i was hoping to get some simple answers here. thanks for your time :) |
| | I am using Robot's screenCapture method which returns BufferedImage, and then send using Socket to client on Android. If I don't reduce Quality then It works fine but it is very slow as Image is large and takes much time to send. I am trying to Reduce quality of BufferedImage(using …  |
| | The link tied to this post is what I have to do. I could do this if I all the answers and questions were already established. My problem is that I don't know how to make the program start from scratch and make it "learn". This is my code as … |
 | **Bold Text Here** hey any one can help me sort out my problem.. when i enter the customer id then in tabular format i want its all detail. how to do.. like in textBox i enter customer id as 1 then pressed ok button then in new frame or in …  |
 | Hi people, I recently learn about 'Saving objects'. In order to practice it a little bit, I started making a problem. However I got stuck by a strange syntax error. It says that I do not have the right amount of braces. But I do have the right amount of … |
| | Okay, so I've been working on a program where you add planets to a solar system and try to get them to orbit a sun. What I need, and have been having great troubles with figuring out, is a 'guide line' to show you where your planet is going to … |
| | Howdy Folks; I have decided to begin working on a project, that I personally feel will cover alot of areas, and introduce me to new topics. This is not for a client, or a homework assignment. This is strictly to help me 'learn as I go' and review some old … |
 | Chaps, today I was reading about exception handling and although the book explains them in sufficient details there is something that I really struggle to understand. Ok, here's the example they analyze: // Fig. 11.2: DivideByZeroWithExceptionHandling.java // Handling ArithmeticExceptions and InputMismatchExceptions. import java.util.InputMismatchException; import java.util.Scanner; public class DivideByZeroWithExceptionHandling { // … |
| | Hi I just started to learn Java and when i was reading through the tutorial for building a simple GUI. It says that parseDouble method is not localizable. I don't understand what it is refering to as this method is not localizable. Please explain to me.THANKS!!!!!!!!!!!! :D Code int tempFahr … |
 | Hello good day. I am designing two JTables; one on top of the other. The first one has nine columns. And the second one has 8 columns (The first column spans the first columns of the topmost table). What I wish to do now is to make the bottom table … |
| | I am trying to download a zip file from a server using the following code but it gives me a tmp.zip of size 1kB. What is the mistake in this program? try { URL url = new URL("http://www.nseindia.com/content/historical/DERIVATIVES/2013/JUN/fo18JUN2013bhav.csv.zip"); HttpURLConnection connection = (HttpURLConnection) url.openConnection(); connection.setRequestMethod("GET"); InputStream in = connection.getInputStream(); FileOutputStream out … |
| | A one liner definition of obfuscation from wikipedia: >In [software development](http://en.wikipedia.org/wiki/Software_development), obfuscation is the deliberate act of creating obfuscated code, i.e. [source](http://en.wikipedia.org/wiki/Source_code) or [machine code](http://en.wikipedia.org/wiki/Machine_code) that is difficult for humans to understand. Obfuscated JavaScript code is a widely used technique to hide initial functionality of a given script. There is … |
| | Hello, I am using Netbeans with JDK7. I was wondering how can I check which compiler is Netbeans is using to compile the program? Thanks |
 | Hello Friends!! I need some help here.... i build a website called E-Maintenance, now i need to make a form that user can choose date and the system will insert into database mysql after the user click submit, im searching on the internet and i found this Javascript calender, this … |
| | [CODE]import java.util.* public class ArrayMinMax { public static void main(String[] args) { Integer[] numbers={8,2,6,7,1,4,9,5,3}; int min=(int)Collections.min(Arrays.asList(numbers)); int max=(int)Collections.max(Arrays.asList(numbers)); System.out.println("Min number: "+min); System.out.println("Max number: "+max); } }[/CODE] Hi guys, me again. Okay so I use this code in a single array if i want to know what the minimum and maximum …  |
| | The idea is to load an array of objects onto a JComboBox. I have a Class Tournament, which contains an array of Teams. I have serialized an intance 'a' of the Tournament class into a .dat file. try{ ObjectOutputStream oTourn = new ObjectOutputStream(new FileOutputStream(jTextField1.getText()+".dat")); oTourn.writeObject(a); } catch(Exception e){ JOptionPane.showMessageDialog(this, e.toString(), … |
 | can someone please tell me how much time will take to learn java , i have already learnt c++ and looking forward to learning java |
| | Chaps, I have just read about java interfaces and there is a nice exercise in my book that I would like to attempt, so I was wondering if you could help me to identify the best way to go about it. Here's the exercise: "Create 3 small classes unrelated by … |
| | I am trying to modify my shell sort algorithm to use Hibbard's increments rather than n/2. I know that Hibbard's increments are 2k - 1, but I can't figure out how to incorporate that into my algorithm. Any suggestions to help me move forward with this? I feel like I … |
| | How to write a java program that runs in background but still can detect any key press from the keyboard (with the corresponding keycode) |
| | Hi guys, I am developing a software that has to transform a dataset in a graph database. So far I have developed the dataset import. Basically, I open the file and afterward it is displayed in the tab1 and stored in a matrix of Objects. Now I don't have any … |
| | I have a JTable with two columns in my JFrame. The number of rows this table has should equal a number input in a JForm in a previous JFrame. I cannot find any rowCount mutator function (Using Netbeans), and upon further inspection, the rowCount property in the GUI design view … |
| | need help with design to separate model and gui code? les say i have 3 classes. Main.java BoxGui.java BoxModel.java public classBoxModel { BoxGui bg = new BoxGui(); public void moveBox(){ int x = bg.getX(); bg.setX(x+1); } } public class BoxGui { int x,y,width,height; public void paint(Graphics g){ g.drawRect(x, y, width, … |
| | I want to add employee name from database to combobox and i am using the coding while(rs.next()) combobox.addItem(rs.getString("Emp_name")); but the combobox appears consisting elements as Item1,Item2,Item3...and so on how I can add employees names in combobox |
| | HI I have been building a game applet. I have coded as far as getting rectangles to move on a timer and put integers into the rectangles. I am not familar with how to click the rectangles and I also want to get the different numbers going through an ArrayList … |
| | Hey guys. I have a simple question about my android app. I know what you are thinking " this dumbass just posted this in the wrong thread". But I did it for a reason. The error that I have is related to java...not android. (I will star every line of …  |
 | Hi everyone, I'm dealing with both JMenu and JPopupMenu in a program. Looks good except when I switch from JMenu to JPopupMenu by right click, it doesnt work. How? Many thanks. |
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