36,051 Topics
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| | The questions are at the bottom of the code. Need Java Help! I don't know what I'm doing or where to start!? Here is the first program: public class IntClass { private int x; public IntClass() { x = 0; } public IntClass(int num) { x = num; } public … |
| | I'm working on a Floyd's Algorithm type Java program. What I have done so far is represent a directed graph in a 2d array, and I am trying to transform that into a 2d array representing the graph's paths of length 2. I planned for it to fill the adj2[][] … |
| | OK i have been stuck with this particular problem and driving me crazy any insight would be helpful. I am trying to create a program that asks user for a string and using the scanner method count the instances it appears in a txt file below is the code oh …  |
 | Hello, In my project I have to capture screen activity (including audio) to a video file. I try using JMF for this. I don't know how to use those two classes: DataSource.java and LiveStream.java. I read them line by line. I probably have to create a Processor and feed it … |
| | Hi all, I've a problem: my application must convert ms word documents (imported from another system) into rtf documents, in order to be manipulated with OOo APIs and [U]to be immune from mistakes[/U] (for coding incompatibility reasons). I ask you: how can I manipulate ms word documents directly from my … |
 | hello can someone help me out with these? am writing a project on a video rental store. and i have to use access i dont know if i should use one-many connection or many - many. if many-many then what will the code in the java database look like? remember …  |
| | I am trying to run a source code that I downloaded. However, there are several error message in reference to the classes TablePanel, BufferedPanel, Stringable, and Booleanview. I am not sure why I am getting these errors because it is a complete source code. Do I need to import additional … |
| | Can you convert the object returned by jTable.getValueAt(Row,Col) to an integer?  |
| | Dear All, I have a web-application where there are two modes of operation i.e. User and Admin. I have pages index.html, user.jsp, admin.jsp in my jsp folder. The problem is the User can go to the browser and type the admin.jsp in the url and gets the admin page. I … |
 | Hi, In my program, a text file is read in, and certain parts of it are written to a XML file. There are special characters(e.g. &) that need to be escaped, so I need to escape all of them. How can I manage to do this? |
 | Hi. I am working on a HRMS system in J2EE. Here i need to verify mobile number through sms. I am reading about it from 2 days but didn't get anything except SMPP. It will take a long time for me to learn this and implement whole. I need suggestion … |
| | [CODE]import java.util.Scanner; import java.util.Random; import java.io.IOException; import java.io.PrintWriter; import java.io.File; public class Password { public static void main(String [] args) { Scanner in; in = new Scanner(System.in); Random rand = new Random(); System.out.println(" Password Generation Menu "); System.out.println("********************************************************"); System.out.println("* [1] Lowercase Letters *"); System.out.println("* [2] Lowercase & Uppercase Letters *"); … |
| | There were two other variation which I completed but I am confused with this one: Write a method for each triangle variation. Use nested for loops to draw the triangles. Variation 3: /** Precondition: width is an odd number >1*/ public void diamond (int width) { } if width = … |
| | I have drawn a cirlce and 2 line which intersects the circle using 2D Graphics. Now I want to draw an arc between the intersection point. The attached pic can show very clearly wht i want. The black portion is drawn. The red part is to be drawn. The radius … |
| | I get a ArrayIndexOutOfBoundsException. The cause is this snippet: [CODE]public static void main(String[] args) { //command line param try { [B]if (args[0] != null) {[/B] if (args[0].equals("printer")) { printToFile = false; } } } catch (Exception oob) { oob.printStackTrace(); }[/CODE] I don't give the program any parameters when I start … |
 | The section of my code that is commented out is what I need help with. I am wanting to check the user input of binary for anything other than a 1 or 0. Also, it will only accept an input of 10 numerical characters or less. I am wondering if … |
| | Hi, I'm trying to find a suitable language for developing an RIA to be able to tune an instrument via a website. I.E. what I need is: 1) Live input from a microphone 2) Get the volume level of different frequencies 3) Find the average or loudest frequency 4) Output … |
| | I am trying to implement an interface so that the main program would work. Any light? I am having a difficult time trying to understand interface :/ [code] interface ArithmeticOperator { // Returns the result of applying the operator to operands a and b. double operate (double a, double b); … |
| | Hello, I made Web Service which connect to database and retrieve data. Web service works file, I can connect to database and get data, here is my code: [CODE] package mypack; import javax.jws.WebService; import javax.jws.WebMethod; import java.util.*; import java.sql.*; import getInfo.*; /** * * @author Aziz */ @WebService() public class … |
| | The fact thats it an AVL tree probably doesn't matter. I have a printTree method in my tree class and I'm trying to print the nodes in the form of the tree. I've successfully printed the nodes the correct way but now I'm trying to label the nodes by their … |
| | Friends, I hav an application running in system tray.As of now, when I click it,the dialog displays.I want to make this happen by pressing any shortcuts,say,ctrl+Alt+a. Can anyone help on this? |
| | Difference between Runnable interface & Thread class?Which one to use, though both seems to be same? As per my knowledge,runnable can be implemented in such a case that already it has some hierarchy -Thanks in advance |
| | Write a program that computes the mean and standard deviation for a sample of 1,000 values. Your program will generate the 1,000 values using the Die class and your program must print the computed mean and standard deviation. We shall use the definition for the standard deviation, given in wikipedia, … |
| | i am doing MCA ..i have to do my final semester project and i had chosed my language as java with Ajax .. so suggest me project with ur idea regards Karthik |
| | this is a problem for electrical circuit. we have a input x and i/o file <number><type> <input1><input2> also a input can be a number of port and the last line is<Y><input> were input is the number of which port we want the result. example of io <1><AND><X><X> <2><OR><X><1> <Y><2> if … |
| | My problem statement is to draw a map from the given images whose Latitude and Longitude information is stored in database. Initial point Latitude and Longitude is given and then they will change in every 200 ms. I have to plot a map once and on top of the map … |
| | I'm trying make a 2 dimensional array. An array of object. I'm trying to make a 126 by 94 array of green SpotInField objects. [CODE]import javax.swing.*; class FarmField { public static void main(String[] args) { int width = 126; int length = 94; } public void FarmField(SpotInField myField[][], int dwell){ … |
| | Please help! Avast detected a trojan called "Win32:Crypt-FOU[tri]" in a file called "fuhulila.dll"and I cannot delete or add to virus vault. Hijackthis log below: Logfile of Trend Micro HijackThis v2.0.2 Scan saved at 8:47:43 AM, on 12/1/2009 Platform: Windows XP SP3 (WinNT 5.01.2600) MSIE: Internet Explorer v7.00 (7.00.6000.16915) Boot mode: … |
| | Hello. Can someone tell me please how can I find out monitor resolution from my Java code? Thanks in advance |
| | Well, I would like to know how can i print invoices in java. the page that my printer is using is like a type of template which has already written the fields(like name, address, id and so on). So, what i want to do is to print the data in … |
| | [CODE] // imports import java.io.*; // Input stream import java.util.*; // Date //import java.text.*; // SimpleDateFormat class FinalPrep { //** arrays for saving static String firstNameArray[] = new String[0]; static String lastNameArray[] = new String[0]; static float gradeArray[] = {}; public static void main(String args[]){ readInFile(); System.out.println(" Sorted By last … |
 | Hi, I want to change the color of a selected jradiobutton in a button group to RED when clicked on it. I am not able to do it make it happen till now. The problem is actually that when I select any jradiobutton the selection spot should stay and get … |
| | Hello daniweb, I am new to Java and to this forum! I am trying to put some objects into an array like this.. [code] MovingPlatform[] platforms; platforms = new MovingPlatform[1]; [/code] The problem is that I want to be able to access variables of objects within my array. I have … |
| | I thought I got the class path right?? lines 89 and 94 throwing the error [code=java] <%@ page language="java" %> <%@ page import="trader.webservices.util.Utils" %> <%@ page import="java.util.ArrayList" %> <%@ page import="java.util.Vector" %> <%@ page import="java.net.URLDecoder" %> <%@ page import="trader.webservices.util.AABAHeaderFooter" %> <%@ page import="trader.webservices.data.UserDataVO" %> <%@ page import="trader.webservices.data.UserInfoDAO" %> <% RequestDispatcher … |
| | The name of this question is jsf_book_recommendation Hello and Thank you in advance for any assistance. [B] System info: [/B] I use Netbeans,MySQL,glassfish [B] The Purpose of this post is: [/B] To see if any one has a good recommendation for a book to study JSF web app building. Preferably … |
| | This is my program [CODE]/////////////////////////////////////////////////////////////////////////////////// // ICS 3U1 - Mrs. Shanks // Asad Choudhry // November 28, 2009 // Family Feud // // This program takes as input the question numbers, the questions, the answers, // and the points. the question number is saved to the questionNumArray, the // the … |
| | I have an exam coming up on this unit found in the guide to programming with Java textbook. I was just wondering if someone can provide an algorithm to the following question. 13. a.) Write an algorithm to count the number of words in a sentence. b.) Write an algorithm … |
| | can someone please tell me what im doing wrong this code works: [CODE] String r = ""; for(int i =1; i <= rows; i++) { for(int j = 1; j <=columns; j++) { r = r + " _"; r = r + "\n"; } return r; }[/CODE] This code … |
| | Hi, I felt trouble to solve the problem last few days.When I loguot as an user from an account the "Backward option is activated" by which with out giving password another user can enter the last Logout page which I don't desired. I follow Session object in jsp tags for … |
 | Hi and I found a script at the below website but appears not to work for me. I'm using the Netbeans IDE and Java Version 6 and the link where I found how to use cookies in Java applets is at [URL="http://www.rgagnon.com/javadetails/java-0180.html"]http://www.rgagnon.com/javadetails/java-0180.html[/URL] However my partial script below (snipped chunky code) … |
| | I have a file that goes with a java program, and when the program executes its prints out whats in the data file. But when i try to view the file itself It shows some of the names in the file, and all these weird symbols. How can I view … |
| | Hi all, I've been google'ing my backside off in search of a good example/tutorial for java gui's. Could anyone supply me with a link to a website that could supply a tutorial and/or some examples? Would be great, thanks. P.S. I use Eclipse, with no GUI editors, so I need … |
| | I need help on my project. This is what I have so far: [CODE]import javax.swing.JOptionPane; public class Convert{ public static void main(String[] args){ String choice = ""; do { choice = JOptionPane.showInputDialog(null, "Would you like to enter a temperature?"); } while(choice.equals("No") | choice.equals("no") | choice.equals("N") | choice.equals("n"));{ choice = JOptionPane.showInputDialog(null, … |
| | [CODE]/////////////////////////////////////////////////////////////////////////////////// // ICS 3U1 - Mrs. Shanks // Asad Choudhry // November 28, 2009 // Family Feud // // This program takes as input the question numbers, the questions, the answers, // and the points. the question number is saved to the questionNumArray, the // the question is saved to … |
 | I searched for this topic first, because it is pretty popular, but I didn't find much to help. What I was instructed to do was convert a prefix expression to a postfix expression. I have to use a stack and a queue, which is different than many other threads about … |
 | Hello all, I have the bluej source code in eclipse, and it compiles fine, but when I try to run it BlueJ starts fine, and then pops up an error window that says that bluej couldn't create a VM. My installed BlueJ has never given me this error before, so … |
| | Hi there, this is my first topic to daniweb eventhough I read this forum everyday, well I have a question: I have a task to do, I need to simulate seconds (phone calls), for example if i have 5$ telephone credit, it should do smthing like (credit - talkingSeconds), but … |
| | Hey guys im back again with a problem, i am trying to add circles to my board but i cannot do it, i am getting one error. cannot find symbol symbol : variable Col location: class SimpleDrafts g.fillOval(4 + Col*20, 4 + Row*20, 15, 15);? Anyone know the prob?? [CODE] … |
| | Database records are returning strings as follows: "Washington%20Report%3A%20Good%20Faith%20Estimate%20Mortgage%20Disclosures" Is there a method that automatically translates those characters...or do I need to set it up? Apparently the %20 is equal to a space and the %3A is equal to ":" thanx in advance |
| | hey i'm trying to do my homework for a computer science class, and im a bit stuck. When i run the program, the terminal window doesn't even show up, can anyone help me please. Thanks in advance. class: [CODE]public class Grid { public Grid() { rows = 10; columns = … |
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