35,619 Topics
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| | Hi I have a problem with RSA encryption/decription of txt files, I have one method to create a pair of RSA keys and save them into a file, then i made two methods, one for encryt and one for decrypt, encrypt method works fine, but when I want to decrypt … |
| | I am having a problem with left alignment after adding a second JPanel. Both JPanels are using the BoxLayout with the first set to Y_AXIS and the second set to X_AXIS. If you comment out the add(twoPanel) it results in the desired left alignment. I don't understand why the alignment …  |
| | Program reads in a word and outputs the last character then a "," then the last 2 characters of the word |
 | hi all, m new to this site and m newbee to this java thing..i have a project dnloaded from somewhere ..and now i have some problem with updating the database ..following is the [CODE] cnt=cnt+Integer.parseInt(dis.getText()); System.out.println(cnt); cnt=cnt+ Integer.parseInt(ent.getText()); System.out.println (cnt); String str="update bikeinfo set stock =" + cnt + " … |
| | Hey everyone I need to write a tic tac toe program vs the computer using an array. I have gotten almost all of it done but I am totally stuck on this error. Any help would be much appreciated, thanks in advance. My error being on line 221 and 222 … |
| | Hi, I am trying to use regex to validate an input from JOptionpane i want to allow the user entering ONLY digits, letters and exclametion marks. This is my line of code where i would like to put teh regex. [B]Code[/B] String message = JOptionPane.showInputDialog(null, "Enter a Message: "); Steganography.hide(message, … |
| | hi, I would like to save a .bmp image using showSaveDialog and i cannot figure out what to use.. Below i have the code of open. [B]Code[/B] [CODE]protected void Open(JFileChooser chooser, JLabel lblPicture) { // TODO Auto-generated method stub if (chooser.showOpenDialog(this) == JFileChooser.APPROVE_OPTION) { File fileChoosed = chooser.getSelectedFile(); try { … |
| | i'm writing a small desktop application to store details entered in to a swing ui.this application saves, edits and deletes the records.every thing is working fine but when writing searching functionality when i search the records i'm able to fill the searched record in to the text fields successfully.but if … |
 | Hello, I wrote a program by RMI, when I compile it by the cmd, the client class dosn"t compiled, it"s arrive to the lookup and stop. this is part of my code: Client Class: (the lookup doesn"t succeeded, when i compile it, print demo 1 , demo 2 and demo … |
| | I want to draw an image at X Y position when the user click the mouse so I'm using an InternalFrame with layout set to NULL , inside a JFrame with Layout free - using netbeans here is the image class [CODE=java] package myPak_1; import java.awt.*; import java.awt.image.*; import java.io.*; … |
| | Hello guys. I need information abaut of java conetion SQL sever 2008. Thanks |
| | So i found a code thats the Java equivalent of the bubble sort algorithm, i understand parts of it, but the thing is i dont get how it works, specifically the loops which i assume do much of the work, can somebody please explain to me, i swear if i … |
| | I need a bit a help to randomly select a radio button on an page to answer questions. I am doing some Selenium / Java / webdriver development and sort of new to this. Below is a some code to find the number of radio buttons. any help that someone … |
| | I am working on a application for which i need to connect it to a database. I have chosen postgreSQL. But i cannot connect it to java. Can somebody help. I tried this [url]http://www.faqs.org/docs/ppbook/x20856.htm[/url] but i don't know how to set classpath.I am currently working with windows xp. |
| | if items are added into an arraylist would another arraylist be required for grouping items or would a hashmap or something else be required i.e. title, firstname, last name etc saved indvidually but therefore grouped to equal person 1 and so on ? the reason for grouping is to edit … |
| | currently i am taking a java class, and out professor is introducing it with the language processing so we get the idea of how things work. he moentioned that processing comes from java, so that's the reason i posted it here. i made a really simple game somewhat of a … |
| | I really need help from someone who knows Java I have to create some fake users on server and also create a stream for them with videos could anyone please help me with this? thank you |
| | trying to create a matcher for finding if title is not correct i.e. has to be mr, mrs, miss etc..but this allows mrmrmr etc when it should not. tried different setups to keep failing i.e. [[]] or (). [ICODE] public void valTitle(){ //validate title while (this.title.matches("^[\\s]+$") ||this.title.matches("") ||this.title.matches("[^m]&&[^r]*") ){ System.out.println("Title … |
| | I am trying to write a simple servlet program. But getting the error The requested resource (/servletexam/LoginServlet) is not available. I have created two servlet classes as follows - [B]LoginServlet[/B] [CODE] public class LoginServlet extends HttpServlet { Hashtable<String,String> users = new Hashtable<String,String>(); public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException, … |
| | Hi all, In a nutshell what I'm trying to do is make a group of objects, but I don't know what their name will be until I want them made. Is there a way of getting round this? I can't simply use [CODE]Object variablename = new Object()[/CODE] because it won't … |
| | Could you tell me why programmers use this.variable ex. (this.miles) in constructor, and what is the advantage of using it? |
| | I have a JFrame with 2 JPanels...my problem When I attach one of the JPanels to the JScrollPane object, it encompasses the whole JFrame, instead of just the JPanel I said to attach to. The scrollBar goes all the way up to the top of the JPanel I don't want … |
| | Hi, I am doing a project on picture editing and i have a null pointer exception in blur and i can't find out what's wrongs.. AIn this project i only can load .bmp images below is the code. Help me pls. Code: [B]Effect Class[/B] [CODE]import java.awt.image.BufferedImage; public abstract class Effect … |
| | [CODE] import java.sql.Statement; import java.sql.Connection; import java.sql.SQLException; import java.sql.DriverManager; import java.sql.ResultSet; class db { public static void main(String arg[]) { Statement statementObj=null; Connection connectionObj=null; try { Class.forName("sun.jdbc.odbc.JdbcOdbcDriver"); connectionObj=DriverManager.getConnection("jdbc:odbc:sensorData","",""); statementObj=connectionObj.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE, ResultSet.CONCUR_READ_ONLY); System.out.println("do not worry ho ga yr ho ga"); statementObj.executeUpdate("INSERT INTO hardwareData (Time, Date, humidity, Temp, DiesalLevel) VALUES('1','12','3','s','a')"); connectionObj.close(); } catch(ClassNotFoundException … |
| | I have a Coin class that compares weight and value and I need help developing a hashcode and Junit tests to test them, here is my class: [CODE]public class Coin implements Comparable<Coin>{ public static final int CENT=1, NICKEL=5, DIME=10, QUARTER=25; private int value; private double weight; public double getWeight(){ return …  |
| | Hello! I have a minheap class that is implemented as a priorityqueue and it works fine as far as to the iterator that I have to implement as a innerclass. But I can't get it to work properly. Here is part of the code: public class MinHeap<E> extends AbstractQueue<E> implements … |
 | cant compile the code...please help me![code]import java.io.*; class football { public static void main(String args[])throws IOException { BufferedReader stdin = newBufferedReader(newInputStreamReader(System.in)) String str; int num_team,num_win,num_draw,total_point,point; for(num_team=1;num_team;num_team++) System.out.print("Enter team compete"); str=stdin.readLine(); num_team=Integer.parseInt(str); System.out.print("Team 1"); System.out.print("Enter total win"); str=stdin.readLine(); num_win=Integer.parseInt(str); System.out.print("Enter total draw"); str=stdin.readLine(); num_draw=Integer.parseInt(str); total_point=(num_win*3)+(num_draw); System.out.print("Total point for team 1 is" …  |
| | How do I take to set up for network connect with Socket. I make the JList to press Go to run the post processing (like files). I feel about it and it is not work for me I try to figure out. Thanks. [code] public final static int port = … |
| | Hi all I have a program that is written in java and have three different executables program.sh, program.bat, program.jar. i can starts the gui by using program.jar and then in gui i can enter parameters. but as i want to run it over several parameters and get the outputs. i … |
| | Hi there, I understand that this question might be better off in "hardwareAndSoftware/LinuxAndUnix/LinuxApplicationsAndSoftware". But the truth is, that it takes for ever for someone to respond to posts there, because I don't think anybody visits that forum alot. Anyways, back to the point... I'm trying to install the Java 1.6 … |
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