36,051 Topics
 | |
| | Hi Friends, I have been assigned a java based project. First based on environment variable values for any type of file extension such as .txt, .doc, .pdf etc. Example: FILE_EXT = .txt If FILE_EXT .txt then all .txt files in folders sub folders with should run a specific commands (such … |
| | i tried running my first java program on winows 8 but it didnt display hello world instead it wrote something like a problem to do with "main"and also the red buttons.i am using eclipse,jre is my compiler  |
| | Hello, I am using Itext to create reports, I have created the layout which includes a table. try{ Document doc = new Document(); PdfWriter.getInstance(doc, new FileOutputStream("Products.pdf")); doc.open(); Image image = Image.getInstance("logo.png"); //doc.add(new Paragraph("image")); doc.add(image); doc.add(new Paragraph("Registration",FontFactory.getFont(FontFactory.TIMES_ROMAN,18,Font.BOLD,BaseColor.RED))); doc.add(new Paragraph(new Date().toString())); doc.add(new Paragraph("------------------------------------------------------------------")); PdfPTable table = new PdfPTable(2); PdfPCell cell = new … |
 | Hello, I have started picking up on encrytion, and I seem to have an error when I run the program. Here is the error: Exception in thread "main" java.security.NoSuchAlgorithmException: Cannot find any provider supporting ES/ECB/PKCS5Padding at javax.crypto.Cipher.getInstance(Cipher.java:453) at GenerateKey.encrypt(GenerateKey.java:41) at GenerateKey.<init>(GenerateKey.java:24) at GenerateKey.main(GenerateKey.java:71) Here is my GenerateKey class: import java.io.IOException; … |
| | Hi.. I need some inputs on the below. I am trying to write a program which will help me find the number of objects eligible for garbage collection at any given point of time. How do i do this? Any suggestions?  |
| | Hi everyone, I'm stuck making a Scroll pane to see all the bar graphs created when they do not fit on screen, or when the frame is diminished. Can anyone tell me how to do this please? Thanks import javax.swing.JFrame; import javax.swing.JOptionPane; import java.awt.event.*; import javax.swing.*; import javax.swing.event.*; import java.awt.*; … |
| | can you help me with the code for that using the logic: 1) randomly select the start point 2) predetermine the distance you need that car to travel using nextGaussian() 3) identify all the end points that are that distance away 4) randomly select one as you can see, i …  |
 | I have two JTrees that I want to display the same content on them. I set a ScrollPane to each one and wrote this code: sourceScroll.setViewportView(sourceBuildTree); targetScroll.setViewportView(sourceBuildTree); //I want to set the same tree. sourceScroll is the scroll pane of the first JTree, and targetScroll is the scroll pane of … |
| | I tries to install a wizard for web references in eclipse, i found these plugins: org.apache.axis.wsdl2java.eclipse_1.1.0. and org.apache.axis_1.1 and when I am trying to add a web reference i get an error message: The selected wizard could not be started. Plug-in "org.apache.axis.wsdl2java.eclipse" was unable to instantiate class "org.apache.axis.wsdl2java.eclipse.wizards.WebReferenceImportWizard". org/eclipse/core/internal/utils/Assert guys … |
| | Hi, I havea simulation in which cars are moving. The point is that a car has a start point (coordinates x and y) and an end point (coordinates x1 and y1). I'd like to make sure that the distances that the cars need to travel are following a gaussian distribution … |
 | HI Coud you please explain this programme , step by step , i can`t understand it`s method import java.util.Scanner; public class Ex5_4 { public static void main(String[] args) { Scanner input = new Scanner(System.in); System.out.print("Enter an integer: "); int x = input.nextInt(); int y = reverse(x); System.out.println("The reverse of " … |
| | Hello, I have one method for checking fields entered, if they are consistent enough then I am inserting into the database. Another on to check duplicates: //check fields and if alright insert in table public void checkFields(String a, String b, String c, String d){ if(a.length() >= 4 && b.length() >= … |
| | hey i'm trying to generate numbers from 1 to 3 in a way such that number 1 has the probability 70% being generated number 2 has the probability of 20% of being generated number 3 has the probability of 10% of being generated how do i do that?? can anyone … |
 | While copying a code snippet from some sites and pdf,docs line numbers are also getting copied.I have to omit those line numbers in my text editor manually always. Any better way so that line numbers won't be copied?  |
| | Hi! I am testing the "session" object and I don't know why it is losing data when I change the web page. I created a simple software to show the problem: See the code: Page index.jsp: ============== <%@page contentType="text/html" pageEncoding="UTF-8"%> <!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>Login</title> </head> … |
| | Hi everyone, Does anyone have an idea of how to skip a line in a JTextField? In System.out.println, I would normally type n but it didn't work for me when I used it in a textfield: text1.setText(**"n"**+coloumn[counter]); where the output displays well as desired excpet that it doesn't skip a … |
| | i wanted to know if u know how to get the length of digits, like if the user enters 12345 the computer will return 5 because the length is 5 |
| | Do you know how to convert PDF to PPT|PPS documents in Java? I generated a PDF document with IText and now I want to put an option for users to save as ppt|pps |
| | I'm taking my first Java class. I need to create a rock paper scissors game. I can't seem to figure out how to fix it. Please help! Thanks (: I'm using NetBeans IDE 7.3 btw /* * To change this template, choose Tools | Templates * and open the template … |
| | I want to create a .csv file. I am using the following code: FileWriter fWriter = null; BufferedWriter writer = null; try { fWriter = new FileWriter("fileName.csv"); writer = new BufferedWriter(fWriter); writer.write("This,line,is,written"); writer.newLine(); writer.close(); } catch (Exception e) { } Does it create a new file if it does not … |
| | |
| | im having problems with my input. i want the output to look like this [CODE] Enter first string: first <- user input Enter second string: second <- user input The contents are first and second[/CODE] but the output doesnt look like that and the input is messed up. what seems … |
| | Hi, i'm trying to write a small script for the website "www.fanfiction.net." This small perl script is part of a much larger script, which is why it has to be in Perl. When you are logged in and go to any of the stories on the site there is a … |
| | Can somebody explain me how to use Comparator class for sorting using Arrays.sort? I have a 2d array.. supoose i want to sort the array 4 by 4 (let us say) using column 1 of array(let us say)... |
 | |
| | hi have a nice time, I want to be an expert in Hibernate and decided to do certification in hibernate if there is any good books and links for hibernate projects kindly sugggest me, thanks in advance |
| | I have been trying to implement a parallel Depth First Search in Java for undirected graph. The approach I decided to implement uses one global stack which is shared by all the threads and n local stacks where n is the number of threads. Each thread stores the nodes of … |
 | this is my code to get an image named "hkkl.jpg" from documents and show it on applet. but it gives error saying: illegal unicode escape at /user and /documents.... import java.applet.*; import java.awt.*; public class Test extends Applet{ Image i; public void init(){ i=getImage("C:\users\both\documents","hkkl.jpg"); } public void paint(Graphics g){ g.drawImage(i,10,10,this); … |
 | class test { public static void main(String []vinnitro) { int n=5; for(int i=1;i<=n;i++) { if(i<=n/2+1) { for(int j=1;j<=i;j++) { System.out.print("*"); } } else { for(int k=n/2+2;k>=i-1;k--) { System.out.print("*"); } } System.out.println(); } } } It works as i expected but it is still very difficult to understand for me even … |
| | Hello, I don't know if I am posting this in the right section, I have a Java Database application(mysql). I have used netbeans to develop it. I have one table product_tbl which stores the stock level. I want to send an email notification to a specific email when the stock … |
 | Using GUI (graphical user interface, i.e. Text-Fields, Buttons, Check-boxes, Lists, Labels) you are to create a car-shop or a restaurant-menu program that guides the buyer/customer. If it’s a car-shop to select a car they want, their desired specifications for that car, and finally displays an invoice as per car and … |
 | Hi everyone! So, I hereby hope to show that I've made progress in coding java (largely due to the help of this great community). I want to thank everyone for dealing with me (especially James). :) The goal: The code below is supposed to seed a layout of boats into … |
| | I Am relatively new to java database accessing.. I need to access an SQL Server database..basically i need to use it in Android but I am trying to create web service in java. can i have a sample code for it?? **Please Help** |
| | For the hundredth time I'm listening to **Blackstone Legacy** album (1971) by Afro-American jazz trumpeter Woody Shaw (1944-1989) and I like it exclusively. What kind of music I **don't** like is any sentimental music, so called "smooth" jazz, swing (in the 21st century it sounds too moth-eaten), 99.999% of rock … |
| | I am try to populate a JComboBox with the days of a particular month and year. I researched the problem and came up with this: public void actionPerformed(ActionEvent e) { //code to respond to the buttons goes here if ( e.getSource() == cmbMonth || e.getSource() == cmbYear ) { cmbDay.removeAllItems(); … |
| | Hello I made a site and i would like to update it at a server. I am from greece. Do you know which is the cost per year and a good and not very expensive server? Thank you  |
 | Chps still having big problems uploading java files onto the forum, I keep getting the below error  |
| | |
| | I am trying to read a CSV file having no. of rows=row and no. of columns=col by the following method: public static String[][] FileIntoArray(int row, int col, String FileName){ int Filerow=0; int Filecol=0; String line; String[][] FileArray= new String[row][col]; File file = new File(FileName); try{ BufferedReader bf = new BufferedReader(new … |
| | Hello Daniwebers, I have my login form inwhich I read the value in mysql table to identify whether the password match with the role. I have on combobox with different roles(director, assistant...) which I have filled in manually. It does the work but I would like to do something else … |
| | i can some one help me with jframe and panel. i want to create button using jpanel. i look online but they seem to have different ways to do it and i have no idea which is the best way to do this. ex some people extends jframe at top. … |
 | I've wrote a game. But when I compile, and run the main method, there is an error, saying: No main methods found or something like that. I have one class called Game.java, which is supposed to be the main one, and gameLoop.java. For unknown reasons, gameLoop doesnt want to compile. … |
| | Hello I have a site. For not i just check the size of the image and if it is bigger than a size i just do not upload it. Is there a way to reduce the size and upload it later? Thank you DiskFileUpload fu = new DiskFileUpload(); FileItem fi4=null; … |
| | hey everybody im new to java i have a book and im learning the language from it but i want to know a compiler where i can run the programs i have "IDEA" but it is really confusing can anybidy help me please??? |
| | How do i get the key of "tradeid3" ? Is there any inbuilt method that does it? import java.util.Map; import java.util.HashMap; import java.util.Iterator; public class abcd{ public static void main(String args[]){ Map m= new HashMap(); m.put("TRADEID1", "tradeid1"); m.put("TRADEID2", "tradeid2"); m.put("TRADEID3", "tradeid3"); } } |
| | Hi, what are the essential jar files for a hibernare 4.0 project kindly provide me the name of those jar files thanks in advance. |
| | hello, i have to write a java code using socket programming to transfer all the files from one server to another server keeping the size of the files intact (i.e create a backup of the files in another server). i am new to socket programming. so i would really appreciate … |
| | Hey guys! I'm trying to create a program that first asks the user for an integer input *n*. The program will then ask the user for *n* Strings and store these in the array. This is what I have so far: public static void main (String args[]){ String[] strArray; int … |
 | Hello Good day. Here is the problem I am trying to solve. I have a table as seen below.  My GOAL: Columns A through G are going to be filled with integers. (I have already created an integer model so that these cells only take integers). As the … |
| | I've been asked to edit the code in this post http://www.daniweb.com/software-development/java/threads/455560/java-recursion-brute-force-sim so that it "Runs the function as a thread which wouldn’t then hang the program whilst it’s waiting for the result". I've looked it up, but I'm struggling to apply it to this program, any tips? |
The End.