36,051 Topics
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| | Hi am working on a shape inheritance hierarchy and am having trouble with this particular class I have two errors that state class, interface, or enum expected: on the lines indicated in red everything else seems fine I have attached the whole project If you need to check out other …  |
| | I'm working on a program where I need to have the user enter the size of the array and then enter the numbers to be stored in the array. If the user enters in -99999 the program quit. I also need to display the sum of numbers enter into the … |
| | [B][COLOR="Green"]hi evryone !! i am designing sites in sharepoint 2010 and i need to use the javascript in vb.net!! and how to display an alert message in a web page using vb.net!?! please help :) thank u :) [/COLOR][/B]  |
 | I noticed my JDK is 6u21(1.6.0_21) and the newest is 6u24(1.6.0_24) is there any way for me to update without re downloading, is there and reason to either? |
| | Hi everyone!!! I am newbie in java programming, I am using a communication API. I am havin some problems. Iwant to use a method defined like this: enableRecording public abstract void enableRecording(DeviceID device, Boolean immediatelyActive) throws CstaException and for that I am doing the following: recordingActivation = new Boolean(true); enableRecording(id, …  |
| | Hello all can anybody tell me why i am getting null pointer exception. [CODE] String mesg=""; try { URL u = new URL(strOp); BufferedReader r = new BufferedReader(new InputStreamReader( u.openStream())); String s=""; while((s=r.readLine())!=null) System.out.println(s); if(s.equals("SUCCESS")) mesg = mesg+"Your Request has been Processed.you will be intimated by a sms soon"; else … |
 | Hi If someone could please advise me I was thinking of starting a course in Java programming online with one day workshop,the course requirement Knowledge of programming principles and experience in procedural programming or scripting languages, such as Visual Basic, C, or JavaScript; and an understanding of object-oriented languages, such … |
| | Hello Everyone, i'm trying to convert a .jar file to .exe... first of all is it possible? If so then how? |
| | Hi :) I am writing an admin application for a website I've written. It's a basic database update/insert/delete app. I started by using the website's server, but the time it took to connect to the server (since the main JTable is populated from the db, you have to wait for … |
| | how to read a file which contains more than 95000 <95 thousand> lines in java. |
| | Greetings to the community! I am trying to print a two-dimensional character array and it is printing out ASCII values instead of the actual characters. I think the solution is simple but I can't figure it out. The following is the code snippet and the function that I am using … |
| | Dear all, I have a .exe file of a hydrology model(in FORTRAN) and I need to supply an input file to it using < redirection operator and later store results in a file.It is required to do it through Java platform.Eagerly waiting for relevant replies. |
| | Hi everyone, i am trying to validate password entered into my system from a jsp page, i want to create a method that would check that a password entered is not less than six characters and not more than 15. Does anyone have an idea on how i could go …  |
 | Hello great people. I'm a beginner in programming and I'm having troubles with NetBeans. In those lines down NetBeans reports [B]expected ';'[/B]. I'm assuming that it has something to do with activating classes or jar files somewhere in NetBeans, but i can't find where nor which classes to activate. Please … |
 | Help with DOM.I am trying to access the nodes acc. to their levels in an xml file.reached upto 3-4 levels then getting a nullpointer exception.Please help...wat datastructure would better suit this.i need to index all the nodes.the xml file is cs.xml given under and the java code below tht. <department> …  |
| | Ive been learning java since last month and I wonder if theres any website that you can suggest which will force me to do a problem solving to enhance my program logic skills? Like homework or assignments from beginner to intermediate to advance. I know there are lots of tutorials … |
| | Hi, I have some problem i must to do some homework for our subject called object modeling in java. Award: Add code to the List class. Inserted numbers should be in two way linked lists stored in ascending order sorted, duplicate values are allowed (re-inserting the same value of nothing), … |
| | Hi guys I am quite new to java, and been trying to make a fibonacci number program just to learn more. However I have search the web seen examples and more and I still cant get run this code, there seems to be something wrong with> int N = Integer.parseInt(args … |
| | Hello i need help with the popping of stacks. i want to pop them all once i go into the Clear() method, but im having problems with the codings. here's my code: [CODE]import java.util.Stack; class InfixPost { static Stack inputStack; static String output = ""; public String infixToPostfix(String input) { … |
| | Hi I get the following errors when I changed something - I don't know what, but these occur now. Exception in thread "AWT-EventQueue-0" java.lang.StackOverflowError at sun.awt.Win32GraphicsConfig.getBounds(Native Method) at sun.awt.Win32GraphicsConfig.getBounds(Win32GraphicsConfig.java:240) at java.awt.Window.init(Window.java:368) at java.awt.Window.<init>(Window.java:407) at java.awt.Frame.<init>(Frame.java:402) at java.awt.Frame.<init>(Frame.java:367) at javax.swing.JFrame.<init>(JFrame.java:163) at ExitJoke.<init>(ExitJoke.java:22) at ExitJoke.<init>(ExitJoke.java:43) <-- Keeps repeating itself over and over … |
| | [CODE] import javax.swing.*; import java.awt.*; import java.awt.event.*; import java.io.*; public class EmployeeEntry extends JFrame implements ActionListener, KeyListener,ItemListener { JTextField id, last,first,mi,age,branch,hours,pay,items,rate; JRadioButton male,female; JComboBox emptype; JButton add,delete, back; JPanel p1,p2,p3,p4,p5,p6,p7; JPanel p1_1,p1_2, p2_1,p2_2, p3_1,p4_1, p4_2,p5_1,p5_2,p6_1,p6_2,p7_1; JLabel labelMessage; EmployeeList emplist=new EmployeeList(); Employee empH=new HourlyEmployee(); Employee empP=new PieceWorker(); Employee [] employee; String … |
| | I created a console program in jcreator (java) which asks the user to enter a number in string and converts that string value into char array and then converts each char array into an integer which I also stored each as an array and then adds all the value from … |
 | Hello there. I have a working method here, called rotateRight() that takes an array and shifts all the elements to the right, except the last one that is placed at the start I have debugged the method, and the method works fine. However the changes are not being reflected in … |
| | Hello Guys, I'm trying to learn how to use the GridBagLayout manager... but when I write it like the following: [B]JPanel panel = new JPanel(new GridBagLayout());[/B], Java tells me the following: [U]cannot find symbol symbol: constructor JPanel(gridbaglayout.GridBagLayout) location: class.javax.swing.JPanel.[/U] When this didn't work, I tried type casting [B]JPanel panel = … |
| | Hello All , i urgently need to know how to store Arabic data in database , when i create a DB create database system; create table customer( name varchar(100)); i can't store the name in Arabic what can i do..? thanks alot |
| | sir i have little bit confusion about multilevel&multiple inheritance and why doesn't support multiple inheritance |
| | Ok I have everything working for the most part. I think. Here is what I am trying to do. I am to allow the user to enter the name of an employee, hours worked over 5 days, and pay rate. I have done that. I am then supposed to generate … |
| | My code [code]public class BattleSystem { public static void main (String[] args) { String choice; System.out.print("What would you like to do? "); Scanner input = new Scanner(System.in); choice = input.nextLine(); System.out.println(choice); if(choice == "1"){ createChar g = new createChar(); g.charCreateHandler(); g.charStatsHandler(); g.closeFile(); } else{ System.out.println("More choices coming soon!"); } } … |
| | Hello, does anybody know a simple way to strip the leading zeros out of a string? I have tried [CODE]userName.replaceFirst("^0+(?!$)", "");[/CODE] but cant seem to make it work, any ideas? Thanks. correction, this work.. [CODE]userName = userName.replace("0", "");[/CODE] |
| | In my program when i close the save file chooser it opens another one ??? heres the code [CODE] import javax.swing.*; import javax.swing.filechooser.FileNameExtensionFilter; import java.awt.*; import java.awt.event.*; import java.io.*; public class JB extends JPanel implements ActionListener{ protected JTextArea textArea; public JB() { setLayout(new BorderLayout()); JTextArea textArea = new JTextArea(); textArea.setFont(new … |
| | I am currently using eclipse but thinking of NetBeans because of gui. I don't want to download it yet because i dont want to have unused programs on my computer. so should i download it for gui? |
| | Can you help me on my OS project is the fixed partition project that can enter a job sizes and and its memory size. it is a gui type of project... that when I start now to run a message will come up that requested to have how many jobs … |
| | Hi, im fairly new to Java, learning as I go on. I have gotten to the stage that I need to read specific lines from a text file that has already been created. Lets say my text document has 30 lines, and I only want to read what is in … |
| | Hello. I've learned programming in Visual Basic 6 followed by turbo C++. I was able to make COMMERCIAL software using VB6 but not with C++. The thing is I need to learn a language (for software development) that has syntax and logic similar to C++ BUT COMES WITH AN INTERFACE … |
| | i need to access the current text of a JTextField from another method but i get an error here is the code [CODE]public Calc(){ JTextField textBox1, textBox2; setLayout(new FlowLayout()); textBox1 = new JTextField(" Time "); textBox2 = new JTextField(" Exp "); JLabel lRate = new JLabel("Rate"); JButton calc = new … |
| | Right now, with the manifest file, I am able to create my runnable jar to work with: folder structure: [CODE]libs/thirdpartylib1.jar libs/thirdpartylib2.jar myJar.jar[/CODE] using this manifest: [CODE]Class-Path: libs/thirdpartylib1.jar libs/thirdpartylib2.jar Main-Class: myPackage.myClass[/CODE] Is there any way I can package these jar files into my runnable jar so that I do not need … |
| | Hi all, i have been given an assignment asking me to: "The CashRegister class has an unfortunate limitation: It is closely tied to the coin system in the United States and Canada. Research the system used in most of Europe. Your goal is to produce a cash register that works … |
| | I tried to make a simple program, draw a 4 sided polygon with 4 mouse clicks. This is the code: [CODE]import acm.graphics.*; import acm.program.*; import java.awt.event.*; public class Pravougaonik extends GraphicsProgram { public void run() { addMouseListeners(); } public void mouseClicked(MouseEvent e) { GPolygon cetvorougao = new GPolygon(); cetvorougao.addVertex(e.getX(),e.getY()); cetvorougao.addVertex(e.getX(),e.getY()); … |
| | I wanted to know if its possible to change the text of a JTextArea or JTextPanel from another method and if so how? |
| | Hey guys! So I recently started exploring the InetAddress object, and came across 2 methods which confused me: [ICODE]getHostName()[/ICODE] and [ICODE]getCanonicalHostName()[/ICODE]. I don't fully understand the difference between a canonical host name (fqdn) and a general host name, so if someone could explain the distinction to me in detail that … |
 | How can this be... Another odd thing is that the error appears on the page but no trace in console This is my code [code=java] package actions; import com.opensymphony.xwork2.ActionSupport; import logic.*; import logic.organizations.Project; public class CreateProjectAction extends ActionSupport{ private Project project =null; private String message = "NULL"; public void setProject(Project … |
| | Hi, I have a jsp page running under jboss 4.2.2 server. The structure for the page is like : include head ( head is written on another page, like masterpage in aspx. ) <body> ( codded in main page ) include foot ( foot is also written in another page. …  |
| | Hello there, I'm trying on Gui exercises. One of them requires a simple GUI class for Vehicle. The GUI should have buttons for creating new SportsCar and new Van objects. and then should display the values of the instance variables of these variables. The GUI should also calculate and display … |
| | Hi Everybody, I want to send Free sms in java without using any modem please help me out,i have been doing this since one week. Any help will be deeply appreciated. Thanks in advance Arpita :) |
| | i have to make a screen output final with variable which will set the height of atree.a the while loop has to be used.im kinda stuck to figuring this all out. the tree has to look like this * *** ***** ******* ********* *** so far all i have is … |
| | I ran across this site while trying to Google search for help. I noticed this site showed up a lot of times and answered the questions I had, so I decided to join. I'm writing a program from class but I'm having some trouble. I would like to loop this … |
| | I'm very new to Java 4 1/2 weeks into my intro to java, I have to write a program that asks user for an integer, the program will then add up all integers from 1 to N and display output message the sum of integers from 1 through (integer input … |
 | Here's an easy one for you experts :P What is casting and parsing? How exactly are they different? After explaining, could anyone possibly tell me how to cast/parse the various types from and to each other? (the types being: int, double, char and String) Also, in which situations would I … |
| | I'd like to load an audio clip and play it multiple times in response to a button press events. Application is a piano simulator, with 88 sampled .wav files bundled in a resource. Using JMF, I can easily load the audio file and play it once, it doesn't play the … |
| | I'm a newbie to Java, so I'm sorry if this is a silly question. I'll post the code first, then explain my problem. [CODE]import java.util.Scanner; class CharacterOperations{ public void run(){ System.out.println("1. toUpper"); System.out.println("2. toLower"); System.out.println("3. Alphabet"); System.out.println("4. Quit"); int input; Scanner sc = new Scanner(System.in); input = sc.nextInt(); while (input … |
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