36,051 Topics
 | |
| | Hello, I need to find the code in netbeans where the name is stored as shown in the Title bar of the program and the taskbar of windows. Any ideas where to find that? ive been looking and searching for days now. I want to edit "Openbravo POS - 2.30beta" …  |
| | ArrayList arrayList = new ArrayList(); for (File g : f.listFiles()) if (g.isFile()) { arrayList.add(g); } I hope from the code above you can understand what Im trying to do. If a file is a file then add it to an arraylist. I dont know if this is the best one, … |
| | I'm doing a project on Bus Information System, [B]using JAVA[/B], which takes source and destination station from user and displays bus numbers between those two stations. Here two cases arises:- 1) Direct bus connectivity - in which case it displays the list of direct bus numbers between those stations. 2) … |
 | i'm trying to call a method from a different class and i just cant get it to work.... code from method displayTutorGroup(): [code] /** * Displays the names and marks for the students * in the tutor group in the Display Pane */ public void displayTutorGroup() { for (String name: … |
| | I am starting a project that will require me to create custom tag libraries. 1. Are there any limitations to what can be performed in a tag class? 2. What are recommendations of what I should not do in a tag class? 3. How do I do error handling in …  |
| | Hi, I need help, to get the get working directory of the class file on a Windows system. I'm opening up a txt file to read from in the same folder as the class file, when I just enter the location of the txt file, it says: [CODE]java.security.AccessControlException: access denied … |
| | When you click save in this program , it is saved nicely but the txt file being saved is all in one line. How can i overcome this matter? Just FYI, when anyone try to save, dun forget the file extension (*.txt) [CODE=java] import java.io.*; import java.awt.*; import java.awt.event.*; import … |
| | hi, i have the attached xml file and i wish to perform some xpath expressions in java which i have declared as follows. [CODE]final String xPathexp1 = "sbml_ns:sbml/sbml_ns:model/sbml_ns:annotation/rdf_ns:RDF/rdf_ns:Description/bqmodel_ns:is/rdf_ns:Bag/rdf_ns:li/@rdf_ns:resource"; final String xPathexp2 = "/sbml_ns:sbml/sbml_ns:model/sbml_ns:listOfSpecies/sbml_ns:species/sbml_ns:annotation/rdf_ns:RDF/rdf_ns:Description/bqmodel_ns:is/rdf_ns:Bag/rdf_ns:li/@rdf_ns:resource[starts-with(.,"urn:miriam:uniprot:")]";[/CODE] I have set the namespaces as follows: [ICODE]try { NamespaceContext ctx = new NamespaceContext() { @Override public … |
| | Hello friends, As usual .. when i have a problem ... daniweb.com is here ;). So I need some information from you. Ok, let me explain ... I am currently developing a chat application ! Ok ... everything works fine till now but I have doubts. My application uses 3 … |
| | I'm was wondering if someone can check if this method produce the right result? [CODE] public int fileSize (String name) throws IOException { int charLength = 0; File file = new File("name"); Scanner input = new Scanner(file); while (input.hasNext()) { charLength++; } return charLength; }[/CODE] What this is supposed to … |
 | Hi, I have been trying to get the Jsapi (Java Speech API) embeded into my web applet but have had quite a few troubles. The script for the Jsapi from what I can see was designed for .Jav files where as I am trying to make a .class file. So … |
| | for those of you not familiar with the rules they can be found [URL="en.wikipedia.org/wiki/Conway's_Game_of_Life"]here[/URL]: i am sort of new to java and i am trying to write the game of life, i have got the board made and how to randomly assign each cell a true or false (living or … |
| | Hi, I have a JTable with a tablecellrenderer I have extended from the defaultTableCellrenderer. In my Table model on which the table is based, I have an algorithm that searches each cell making comparisons, when it finds rows with similar values, it adds colour A to an arrayindex and continues … |
| | hi all,how are u? ..i have an encryption project.. i have to implement some of the encryption algorithme in java but i have a problem ..it's the same in all the ciphers ..when i type the key and press encrypt the encrypted text is not right ..i make my calculus … |
| | Hi Guys Im having a problem. Im very new to Java and am using blueJ. I would like to displya a picture on a label when I click a button. At the moment all I can get it to do is to print a message when a button is clicked. … |
| | Hello All, First thanks for taking time to read my thread. My problem is I have created a Gui Class that contains multiple JPanels inside another JPanel or ContentPane. I have just now created another Gui2 Class in the same java project and I would like this new Gui2 Class … |
| | Hello im quite new to java and have been writing this game for my computer science class. ive been getting this illegal start of expression error on line 215 which is my 2nd public class dice extends applet and can not figure out how to fix it. ive tried moving … |
| | hello, i have a java game but i have a problem with healing i get the error client.java:2791: orphaned case case 315: ^ 1 error files compiled successfully! this is the code: [ICODE]public boolean healing() { boolean eat = false; int heal = 0; case 315: Message("You eat the shrimps."); … |
| | I am trying to develop a java program containing two threads that reads two files simultaneously. In a program, first thread reads data from file “Personal_Record.txt” and second thread reads the data from file “Academic_Record.txt”. When one thread reads a line from one file then it should allow another thread … |
| | I am confused about static class and nested class. Is there any difference to code and use of static & nested class?. |
 | What is the difference between an instance variable and field in java? |
| | i am trying to get an input from my mic, and amplify the sound, i started searching for sample source codes, and java sound amplifying tutorials, but i found none of them relevant. so how can i amplify the sound that i received as input from a mic. can some … |
| | Im developing a J2EE project and also Using JBOSS 4.0.2 server,when i run the Servlet program im getting the error "The Selection Is Not Within A Valid Module". Please Reply...Thanks In Advance.... |
| | if i click button in pqge 1 page 2 should refresh if i click page 2 button page 3 shoould refresh if i click page 3 button page 1 shoud refresh ... can any one tell me the javascript code for this plz |
| | Hey, I am trying to find a way to limit how many characters a user can enter into a JTextField. Does anyone know how to do this? Thanks! |
| | Hello, I am having problems with indexOf() and contains() they work if I put letters in the code to test, but I want it to test what the user enters. And that is not working. The user enters a letter into a JTextField, and I am storing that word to … |
| | Hello guys, I'm trying to create a method where it takes a InputStream as a parameter, reads the stream and returns the number of characters it contains as an int. I'm having difficulties with this. I've searched the internet for examples, but i can't find one that helps me with … |
| | Hi There, We have one java class which is to do the document generating, and from the log files we found that this servlet doing the replacing the data "PK" to "Key", wondering why it doing this. 2009-05-22 12:07:24,921 [ (self-tuning)'] DEBUG rk.servlet.PDFGeneratorServlet - Replacing the PK's with Key values … |
| | Hi, I'm trying to figure out how can I make split read from the file and recognize how to put the strings into an array from a file, based on a new line break. Example of my txt file: [ICODE]This will be my first huge paragraph, it will contain many …  |
| | I want to read a jpg image from a file to an Image object and then paint it on my JPanel, but the image doesn't appear.I've tried drawing some other stuff on the panel (like lines etc.) and everything appeared without any problems. My code: This class represents my JPanel: … |
| | I am creating a mobile game using Netbeans IDE 6.0.1 but I have a problem adding new configuration I get the following error: java.lang.NullPointerException at org.netbeans.modules.mobility.project.ui.customizer.NewConfigurationPanel.isValid(NewConfigurationPanel.java:198) at java.awt.Component.invalidateIfValid(Component.java:2740) at java.awt.Component.setLocale(Component.java:1810) at javax.swing.JComponent.<init>(JComponent.java:595) at javax.swing.JPanel.<init>(JPanel.java:65) at javax.swing.JPanel.<init>(JPanel.java:92) at javax.swing.JPanel.<init>(JPanel.java:100) at org.netbeans.modules.mobility.project.ui.customizer.NewConfigurationPanel.<init>(NewConfigurationPanel.java:96) at org.netbeans.modules.mobility.project.ui.customizer.J2MECustomizer.run(J2MECustomizer.java:304) at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:561) [catch] at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:986) anyone know what …  |
| | [code] import java.io.*; import java.util.*; public class lab11_2{ Scanner in=new Scanner(System.in); private int month=12; private int sum; private int value; private int rainfall; private double total=0; private double average; private double standard_deviation; private double largest; private double smallest; private double months[]; public lab11_2(){ months=new double[12]; } public void setMonths(){ for(int … |
| | hi, i want to draw rectangle based on mousedrag event. if user dragging the mouse, then the rectangle on the applet should increase or decrease basing on current mouse coordinates. i have the following code. in the following code i am using [b]SelectionArea[/b] class which extends a canvas on which … |
| | How do i compare an object with null? From what i've seen right now, at execution an NullPointerException will be thrown :S For example, if I have a list: [code=java] class List { private Node data; private Lista urm; public List(Node d,Lista u) { data = d; urm = u; …  |
| | Below I described a complex polynomial which is a part of my newton method. When I define the complex number [x = new ComplexNumber (0,0)] it only returns 0 or 1. Also I have overriden the basic string format to make it look like a complex number, but it doesn't … |
| | |
| | I am new to programming and am trying to create a program to access a database of DVD's. I want to input a unique code for a title and display relevant fields from that record. I am getting the error above and have spent many hours now trying to see … |
| | Hello everyone, I am trying to update a JTable after a user clicks a button. I have a bunch of data in a TreeMap, which I then convert to a String[][], and pass to a DefaultTableModel, and then use that DefaultTableModel in the JTable. When the user clicks a button, … |
 | Hi. My problem i guess it is simple but i guess I'm simple as well :). The problem is the flowing: I have a JTextFead and a search method for IDs. The IDs are 7 char long. I want to be able when the user enters 7 chars the search … |
| | Just had a quick question about my code. Seems like a very simple solution, perhaps I'm just too sleepy to think straight. What I am wanting to do is if a certain index is selected in my combobox i want certain textfields to display which is apparent by the code: … |
| | Hi me and my class are getting this problem with tim.start(); and stop. we get start to work with a button but cant stop and we can stop with the keyboard but not with the buttons bad explaination i know but have an look plz :P [CODE] /* * To … |
| | Hello, For some reason, my program prints out extra zero from my linked list Can anyone tell me why? Thank you [ICODE]public class Main { public static void main(String[] args) { IntNode my = new IntNode(5,null); LinkedList list = new LinkedList(); list.createList(0); list.addValue(1); list.addValue(23); list.addValue(3); list.addValue(4); list.print(); list.getLength(); } }[/ICODE] … |
| | Hello, I was wondering why do we need to assign value of -1 to the top of the stack? topOfStack = -1; Thank you |
| | Ok, i got this so far ... [code] import java.util.regex.Matcher; import java.util.regex.Pattern; public class Testing2 { public static void main(String[] args) { Pattern p = Pattern.compile("[wati]"); String text = "water"; Matcher m = p.matcher(text); if (m.find()) { System.out.print("Found !"); } } } [/code] With that code i got a match, … |
| | Hey all, Im working with assembly atm and thought i might just get a better idea understanding loops if i know how java loops work not that it is really the same im just trying to back track. Im trying todo the following: When var1 = 3 It then needs …  |
| | Hi i have created a list which reads from a text file. how can i view the contennts of the list outside of the method it was created. I have inserted my code below. [ICODE]//read Customers.txt and save in an object. List<Customer2> list = new ArrayList<Customer2>(); File file = new … |
| | Hi ... i found a way to add watermark in java to the following images format: PNG , JPG , GIF... (like this: [url]http://blog.codebeach.com/2008/02/watermarking-images-in-java-servlet.html[/url]) Now im looking for a way to do the same with BMP and TIF... (cause this way doesn't work on that format...) Anyone know how to … |
| | Im trying to program a Caeser cipher that will upload a file from documents and enrypt/decrypt it. i do not know how to implement one main class containing all that and different methods in one class. i have different separate classes. can anyone pls put them together as one main … |
| | I have design report with ireport, if that report i run in netbeans its ok, but while i move to drive c: got error like this "error displaying report page. see the console for details" if i try in command prompt get message [code] java.lang.NullPointerException at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Unknown … |
| | Hello, unfortunately i'm a newbie to java servlets, still i want to learn something new and powerful (for now i'm a PHP developer ;) ). So i have installed Tomcat 6 and Netbeans on my Windows XP. I want to do something for whidh i need some clesses tahat aren't … |
The End.