36,051 Topics
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| | Hi i am trying to create a keyboard input menu that displays the following. I am not quite sure how to go about doing this 1) Work with a circle 2) Work with a rectangle 3) Work with a triangle 4) Exit I am not quite sure how to go … |
 | Hello. I'm working on a class hierarchy that starts with an abstract class called GeometricObject. I want to use this class to create classes of different types of triangles. I want to these classes to inherit the perimeter method from the Triangle class. Here's what I have so far. abstract … |
| | Hello I am working with Jasper iReports, I call a method inside of one subreport created in Java when I run the application sends me the following error: Cannot cast from JasperReport to String value = (java.lang.String)(com.server.beans.GafJasperUtil.getReport(((java.lang.Object)parameter_SUBREPORT_GIS.getValue()), ((java.lang.String)parameter_SUBREPORT_DIR.getValue()) + "GIS-Report"));//$JR_EXPR_ID=45$ <----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------> What should I modified? Thank you. |
| | hi i ask about open source projects where i can learn & develop my programming experience to go forward in java programming really i need ur advice about this topic thanks in advance  |
| | Hello, I'm GeorgeDavid. I have noticed a workplace demand for Java consultants so I've signed up for programming classes. I notice this website handles questions fairly and without insulting those of us learning. I hope to also offer advice and assistance to those that may know less or as much … |
| | hiya all,how can i transfer an array of strings from a client machine to a server machine ?how do i convert to from arrays of string to 1's and 0's on the client side and vice versa? |
| | I need to display the original information from the input file (see below) as it is presented, compute and display each player's average score on his respective line. Input file: Smith 13 20 8 12 -1 Burch 21 18 16 -1 John -1 Mike 5 -1 (FYI) -1 is the … |
| | Hi,Friends Im facing problem in paging using jsp & oracle ,in this code only 1 to 10 values displying,when im clicking on next its displying nothing.Means not taking next values. [code=JSP]<%@ page language="java" import="java.sql.*;"%> <html> <head> </head> <body> <br><br><br> <% int offset=0; int ofset = 0; if(request.getParameter("offset")!=null) { offset= Integer.parseInt(request.getParameter("offset").toString()); … |
| | Hello folks, I m tying to implement a Singleton pattern; Iwant connect to MySQL databaseusing only a single Connection object(Singleton). I have implemented the application using threads. I run 2 threads. The second thread should use the Connection object created by the first thread which is not happening. My code: …  |
| | hello everyone!!! I am currently working in socket programming in java and I am creating a simple chat application... To go directly to my question, ServerSocket server = new ServerSocket(1024); Socket socket = server.accept(); String hostname = socket.getInetAddress().getHostName(); System.out.println(hostname); If I will run my Server program, the output will be …  |
| | i was given an assignment to read from a file and find out the statistics of all the letters in that file. considering it is part of an arrays lesson, i am assuming we need to use those. if someone could help me out, it would be greatly appreciated. thanks, … |
| | Hi, I have a couple of classes and I am trying to do the following: I have a main class that contains a boolean value called "display" that displays various messages throughout the class depending on true/false values. Main class example: [CODE]public static void main (String[] args) { boolean display; … |
| | I'm having trouble compiling my servlet, because it says the servlet classes can't be found. [code] CreateAccount.java:2: package javax.servlet does not exist import javax.servlet.*; ^ [/code] I googled a bunch and most people with this problem had their CLASSPATH set incorrectly. Here is the result when I echo my classpath: … |
| | Hey there. I'm using a JTable for the first time, and I've read through the Sun and other tutorials, but this simple concept is still confusing me. So I seek help! Basically; I'm creating a multiplayer (AI-controlled) mining game, which will display maps loaded from XML. I've parsed the XML … |
| | hey guys, im new to the forum, but i read the rules already so i wanted to start getting help on this homework problem i have for the weekend. i have to determine output of a recursive array code as follows: [CODE]import java.io.File; import java.util.Scanner; import java.io.IOException; class RecArray{ private … |
| | Hi, I need a to create a java file dynamically .This file contains myown methods,variables and constructors.Any one please help me.. |
| | So I have to write a program which writes all even numbers between 0 and 50 INTO AN ARRAY and then display them on the screen.... My problem is how i am going to put it into an array I only did part of it but I can't continue doing …  |
| | Hi. I'm trying to learn how to make my own web app and following those tutorials: [url]http://www.netbeans.org/kb/docs/java/gui-db.html[/url] [url]http://www.netbeans.org/kb/61/web/applets.html[/url] I created a desktop application like showed in the first guide. Then tried to integrate it into the Web Applet. But for some reason after right clicking my desktopapp's java file and … |
| | Hi, I have a file system tree. I need to select a file and highlight it without selection. I am not able to build the TreePath for this. Plz let me know how to build the treepath. Thanks in advacne, Sagar |
| | Hello. My task is import data from a text file into an array, and then sort the array and print out the sorted array. Each element of the array represents a clothing item and has name,category,quantity, and price values. I have an Item class to represent a single clothing item, … |
| | I know I am missing somethings in my code not sure what I am supposed to put in. Here is what I have so far. import javax.swing.JOptionPane; public class Main_Class { /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub String firstNumber;//first number … |
| | Perused for years (in the spatial pauses of keeping too busy) - finally thought I'd register. I'm contemplating creating another non-artificial artificial lifeform; my one and only did not kill me with her terrible 2s revision. Presently one of my projects is acting as a facilitator to some corporate employees … |
| | [i] Name: The name of this question is: carbon_copy [/i] [icode] Hello and Thank you in advance for any assistance. [/icode] [u] [b] Purpose: [/b] [/u] [b] The purpose of this code is create a desktop app and web app. The web app has the destop apps library. Create a … |
| | hello!! is there any body to answer my question : is "General List" a data structure(like ArrayList for example) in java language??if it is, plz tell me what it exactly is??I have searched but i didnt find anything about it!!  |
| | [ICODE]public class fermi { private int[] guess; private int[] random; private int total; private int win; private int lose; public fermi(int[] gs, int[] rn) { guess=new int[gs.length]; for(int i=0;i<gs.length;i++) guess[i]=gs[i]; random=new int[rn.length]; for(int j=0;j<rn.length;j++) guess[j]=gs[j]; } public fermi() { total=0; win=0; lose=0; } public int totalPlay() { return total+=1; } … |
| | I'm planning to develop a bluetooth positioning project but i have no idea where to start. I know that we can track a bluetooth device by identifing it's mac address. What i want to know is that can i actually use a bluetooth dongle to retrieve any device near by …  |
| | Please help I am stuck. I am trying to retrieved text from a file named "text.txt" and reversing the contents to another file named "output". Then i have to display the contents of "output" to the console. I am able to display the reversed text to console but only from … |
| | I want to code a java app that uses the JDBC-ODBC driver. However, i have a problem with this driver. I have no idea where to look for it, I also don't know how use it, install etc. Help please. |
| | I m having many dataobjects (*.java)(having getters and setters) My requirement is that, I want to write a generic Method, which will accept argument as Object and will call all getters of that Object. Basically I want to write a log file with all dataobjects which are going to be … |
| | [ICODE]public class fermi { private int[] guess; private int[] random; private int total; public fermi(int[] gs, int[] rn) { guess=new int[gs.length]; for(int i=0;i<gs.length;i++) guess[i]=gs[i]; random=new int[rn.length]; for(int j=0;j<rn.length;j++) guess[j]=gs[j]; total=0; } public int totalPlay() { return total+=1; } } [/ICODE] [ICODE]import javax.swing.JOptionPane; import java.util.Random; public class playFermi { public static … |
| | Hi everyone, id firstly like to start off by saying i am new here and if i make any mistakes in anyway i am sorry in advance... I was wondering if anyone could "[B]HELP[/B]" me complete a project that i am doing, i basically have to create the card game … |
| | hello to every one , i want help regarding loging, i hv designed my login page. i want to check whether user or administrator has logged in dependinp upon the type of user i want to navigate. pls send me code. thanks  |
| | Hi all, Can any one tell me, how to find C: free space in windows using java?  |
| | Hello, I am having a problem with the w32virut.cf virus. I tried to download programs and I tried to manually fix it myself and it wont happen. it wont let me run programs, i cant use the RUN program. Thank you in advance for any type of help-You guys have …  |
| | Here is the Data: [QUOTE] Department Name: Cool Casino # of Employees: 543 Cost Per Employee: 0.75 Sales: 1000.432 Department Name: Trumpola Burgers # of Employees: 43 Cost Per Employee: 19.725 Sales: 50 Department Name: Donoldio Clothing for Cats # of Employees: 4.0001 Cost Per Employee: 5.233 Sales: 100 Department … |
| | Where I can download z 39.50 server with documentation? How I can deploy in my test enviroment? I have something database, i want use it as datasource for server. It's possible use my database as server's datasource? I am sorry for my English |
| | I'm using BufferedReader to read a string, which is converted into a character array. My program works find with short strings, but not long ones? Is there a limit to the char array's? Thanks in advance! |
| | Hi everyone :) I'm completely new here. Let me introduce myself - My name's Dave and I'm a student studying Multimedia applications development at the Waterford Institute of Technology in Waterford, Ireland. [B]I'm currently involved in a college project where I have a JSP web application connecting to a MySQL … |
| | i have to invoke a servlet from jsp and pass many variables to the servlet. my jsp code is:: [code] <%@ page import="java.io.*" %> <%@ page import="java.lang.*" %> <%@ page import="java.sql.*" %> <%@ page import="javax.servlet.*" %> <%@ page import="javax.servlet.http.*" %> <%@ page import="java.util.*" %> <% String flag1=(String)session.getAttribute("flag"); out.println(flag1); if(flag1=="signin") { … |
 | Hey! I'm pretty new to programming, and since I'm a little too young to join any sort of course, decided to self-teach myself, and decided to start off OO programming through Java, seeing as I'll be picking up Computer Science next year as a subject, and it has quite some … |
| | [CODE] String deleteString = e.getPath(); File deleteListFile = new File(deleteString); deleteListFile.delete(); [/CODE] so to talk you through it, the File object is obtained by the results by system.out.println (not shown here) ...and then I am getting the path of the file by using getpath() then i want that file path … |
| | HI all Can anyone help me with this algorithm (I ned to write the code in java)......The java code would also be helpful [B]Describe a recursive algorithm for enumerating all permutations of the numbers {1,2,...,n}. [/B] I'd appriciate it if somebody could explain this problem to me and give me … |
 | Accorting to MySql manual and web site I modified the environment variable for installing JConnector for mysql as follows : CLASSPATH C:\Program Files\Java\mysql-connector-java-5.0.7\mysql-connector-java-5.0.7-bin.jar where my MySql connector Folder is placed on Java folder in program files (I put there willingly) But actually when I want to do any testing program … |
| | Hi, i`ve made a simpel media player that can open and play mp3 tracks. And now i wanna try to make it open/create and save playlist. any hints on how to start?? Apreciate your time! =) the code for the player is here [url]http://www.daniweb.com/forums/thread177216.html[/url] |
| | hiiii frns... integer can hold only upto 8 bits...where as a string can hold more than 8 bits...so to compare them...is der any function??? like my code is like this for(int i=0;i<= stringgg("12345678901234567890"); i++) |
| | I need help on this: Write your own versions of String search methods indexOf and lastIndexOf. Hope you could help.thanks. |
| | i have been getting this error, <identifier> expected System.out.println("Enter the name of the lab this computer is located: \t"); room = scan.nextLine(); while (room.length() == 0) { System.out.println("Error: This field cannot be empty"); System.out.println("Enter the name of the lab this computer is located: \t"); } room = scan.nextLine(); } System.out.println("Enter … |
| | Hello Experts, I need to use JOptionPane a lot in my Java exercises. Instead clustering each Java files with this JOptionPane syntax plus the parameters, I've decided to use sort of class called showFrame which has the method to show message dialog and input dialog. At the moment, im putting … |
| | Hi, i was wondering is there anyone who could help me with my problem. The is i dont know how to send a z39.50 request from the client to the server. If anyone could help me with this. i would really appreicate it. Thanks |
| | I'm having difficulty in formulating the code in this problem:Use the string-comparison methods discussed and the techniques for sorting arrays developed to write an application that alphabetizes a list of strings. Allow the user to enter the strings in a text field. Display the results in a text area. I … |
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