36,051 Topics
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| | Hi guys, I need some help regarding JComboBox. I want to link the JComboBox with JTextField and this is the code that i did. It contains error and I need some guidelines for it.Thx [code=Java]private void typeof_patronJComboBoxitemStateChanged(ItemEvent event) { // clear JTextFields clearComponents(); // determine whether checkbox selected if (event.getStateChange()== … |
| | Hi everyone, My goal is to generate lottery numbers that have 6 unique numbers in the range of 1-49 ex. if the user inputs 2 as the number of tickets they want, the program should print out 1 2 3 4 5 6 10 9 8 7 12 11 ---2 … |
 | hi, i have a lab monday which requires me to generate random sized squares random poinst. im not to familiar with the random class and the syntax and all that but im guessin i need to use a for loop. if someone can just point me in the right direction … |
| | im trying to make my program draw lines from the top right corner of the JFrame which is 400 x 400, to the bottom of it making what looks like a curve but really is just lines. i think i know the basic idea of how to do this which … |
| | I am having a problem understanding how to sort a set. I have read the Big Java book, and I still don't understand how to do it. Could someone please assist. [code=JAVA] /* * To change this template, choose Tools | Templates * and open the template in the editor. … |
| | Hi Actually i require that as soon as a jsp gets loaded , An Aglet is created and dispatched to remote site. I am able to do dis directly in java..but how to do it through jsp page. Plz help |
| | hey, how's everyone, i need help with a java program, i'll appreciate any help. i'm need to write a program in java that will test if the input is a Palindrome or not. i found a couple of programs, but they use a (do-while) loop which i'm not allowed to …  |
| | hi , If every one know [url]http://en.wikipedia.org/wiki/Instant_Insanity[/url] I want a java program in which there will be 50 different colours and 50 boxes. Thank you, Hardik |
| | Hi! I'm having a problem with my coding. I have initialized a 2d array (String), but when I try to print a value from it, it gives me null. this is how I initialized my array. [code]String phone[][] = { {"A", "B","C"}, {"D", "E", "F"}, {"G","H", "I"}, {"J", "K", "L"}, … |
| | Hj, I have a problem how to do the print. example: I need to print a file. Kjiu |
 | This code works fine so far... except for my "isPair()" function. It gives me the following error: Exception in thread "main" java.lang.NumberFormatException: For input string: Any help solving this issue would be great. I am trying to get the program to read poker hands and print out what it is. …  |
| | [code]public Product findProduct(Product searchProduct) { Product found = null; for(Product item : stock) { if(item.id == searchProduct.id) {found=item; break; } } return found; }[/code] The error code reads: id has private access in Product. I am new at this and do not know how to write it correctly. Thank you, …  |
 | Hi, I like the modularity of java but I wonder what low level custom functions it has, since I' am considering to create an OS, and we all know in high level its imposible to control the hardware eficiently. :-/ so I wonder if there is a way to use … |
| | I am trying to complete a circular linked list add method but I am having difficulty understanding how to. I wrote the above link list add method. I know that a circular linked list, somewhat. Here is what the add function is suppose to do: Any suggestion on how to … |
| | The problem question is, add a close method to the Auction class. This should iterate over the collection of lots and print out details of all the lots. You can use either a for each loop or a while loop. Any lot that has had at least one bid for … |
| | Im writing this in netbeans. Here is the code: /* * To change this template, choose Tools | Templates * and open the template in the editor. */ package accounttoolssilverberg; /** * * @author Administrator */ public class accountToolsSilverberg { double a[]; int i; public accountToolsSilverberg() { a = new … |
| | Hi! All I would like to have a way to do my application using a simple way. I have a genealogy site, since a long time ago. I have near 10,000 pages (10,000 names) on a free hoster. Everything works fine. But I'd like to do the conversion from my … |
| | Hi, I'm trying to create a program where I can monitor when a server running a Tomcat Application Server goes down. I will need to check an IP & PORT every 5 minutes for example and get back a boolean on whether it is up or not. I've tried googling … |
 | I need to read files from a folder(Directory will always be the same) There will at most be 4 files in the dir, but it could be anything from 0-4 files. They will always have the same name. i.e. In the dir "Folder" there will be(Could be any combination of …  |
 | Hi, Is there a way to create voice recognition software in java??? Thanks! |
| | Hello All... I have a requirement to create a chat forum.. I cannot use php or other related stuff. I'm not provided with database even.. My idea is that I can use java applet to create a chat window... What ever post which when given, it will be saved in … |
| | Guys how can I set up my environment so that I can write, compile and run my java console applications. Please If u can take me from the baics help me out.. |
| | hey people, I am looking for a tool which can parse english like test and generate output as test cases..please take this into consideration and help me with your suggestion... thanking you, meenakshi. |
 | I have nearly all of the code figured out, but the instructions make getting the output and variables to match up. If anyone can assist in seeing what the instructor intends for us to do, I would greatly appreciate it. This is a multi-class program where an abstract class implements … |
| | Hi, I am learning JSP now. The following program doesn't work in my Linux system's Mozilla firefox. Any help to fix this problem is appreciated. [code=JSP]<html> <title>Using JSP EL Operators</title> <body> <h2> Using JSP EL Operators</h2> <table border ="2"> <tr> <td> 13 + 2 = ${13 + 2} </td> </tr> … |
| | I've got two threads running, one of them executes the following piece of code (it reads and writes to a socket): [CODE] while ((fromServer = in.readLine()) != null) { System.out.println(fromServer); fromUser = stdIn.readLine(); if (fromUser != null) { out.println(fromUser); } else{ break; } }[/CODE] where in and out are BufferedReader … |
| | I'm trying to add a memory function, that when you hit the 'M' button, it stores whats in the display into a variable, and when you hit the 'R' button, it retrieves the variable value and displays it and can be used for calculations. Here's my code: [CODE]import javax.swing.*; import … |
| | Hiya, im new to this site but it seems like a very useful comunity :) Im new to java programming as well and i have to write a class file to deal with calculating the maximum, minimum, average(mean), population variance and sample variance from an array which is entered by … |
| | Hi to all, ------------- Here there is array of ten position and array contain ten integers . I want to put the array of ten integers randomly on the array of ten position ... Here is my code : ---------------------- [CODE]import java.util.Random; public class TestArray { public static void main(String[] … |
| | Hie guys Iam looking for a java console application that accepts a string of 80 characters from a user and determine the number of words in the string taking care that there may be more than one spaces between words. The program should check that there is more than one … |
| | Hello, I have a problem :icon_confused: which is: [CODE]public void caseUpper() { QTextCursor cursor(textCursor()); String selTxt(cursor.selectedText()); if(selTxt.isEmpty()) { return; } String txt = selTxt.toUpperCase(); insertPlainText(txt); } public void caseLower() { QTextCursor cursor(textCursor()); String selTxt(cursor.selectedText()); if(selTxt.isEmpty()) { return; } String txt = selTxt.toLowerCase(); insertPlainText(txt); }[/CODE] I think the problem is that … |
| | I need to write a program that reads a text file that contains groups of integers that start with the word "next". For each group, the program computes and writes out the sum of the integers in that group and the average. thare may be any number of groups. here … |
| | Hi all Pls help me.At my application,I add a panel at BorderLayout.SOUTH.At that panel has (very long)scroll text.When I resize my frame with mouse pointer , frame is large until scroll text's length.I think something wrong at my coding about panel.How it can be?Pls advice me. |
| | Hey guys, First time poster here, although I've been trolling for a little while now. I'm in a Java 2 class and having trouble completing a practice program. It's supposed to search files that are given by the user at a command prompt for a specific word also given. Here … |
| | This is sort of a follow up on my previous thread. I am looking into ways to click buttons, hyperlinks, or enter info into websites from a java program. So I have taken a look into the following site: [code]http://www.informit.com/guides/content.aspx?g=java&seqNum=44[/code] The page explains how to use the yahoo search. Here … |
| | Hey there, I'm getting ready to release my Beta version of a java project you've all been so helpful with. There is one problem though. I haven't the foggiest idea how to package the jnlp. Where do the compiled libraries reside? Are they part of a binary? What is launched … |
 | Ok I have Netbeans installed and a jdk. All is well inside of the netbeans ide. I can create and run programs just fine. How ever when I try to do so threw my command line I can not (This prevents me from using the geany ide as well). I … |
| | I haven't ever messed with any webpages through java and I'm kind of curious as to how it would work. I have a specific question that perhaps someone will be able to answer. How would one go about pulling certain information from a forum? To better understand what I am … |
| | hey guys im not quicke sure this progrom wont send the string "result" to the JList, something im doing wrong? any help would be great thanks [CODE] import java.awt.*; import javax.swing.*; import java.awt.event.*; import java.util.*; import java.io.*; import javax.swing.*; import java.sql.Array; import java.text.*; public class Q3 implements ActionListener { JFrame … |
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| | Why String comparison with '==' is illegal,eventhough it works fine.Kindly explain? |
| | requirement CSCI690 - Multicast Socket Programming Project [Objective] Develop a multicast client program to work in conjunction with a multicast test stream. [Requirements] The multicast client must be able to join any group/port, that is specified via the command line. E.g., mclisten <multicast group> <port> where multicast group is a … |
| | I am currently working on a program that manipulates strings passed in as parameters using strictly recursion. Right now, I am stuck trying to print the word out vertically. [CODE] public static void printVertical(String str) { if (str == null || str.equals("")) { System.out.print(""); } else { char nextLetter = … |
| | [code=java]import java.util.Scanner; public class Exam_Test { public static void main(String args[]) { Scanner input =new Scanner(System.in); int number; System.out.println(" Enter a Number : "); number = input.nextInt(); for (int i = 0; i <= number; i+=2) { for (int j = number; j >= i; j--) { System.out.print(" "); if …  |
| | hi to all, i am new to jsp..i want to update the table using stored procedure in jsp program..can any one please solve my problem.need code to execute that..anyone help me..  |
| | [B]good day ,[/B] [B]i am new to java ,[/B] [B]i am using two different databases and i want to insert data from one table to other empty table using jdbc .and it consists of null values in one table along with some data .when ever we add new data to … |
| | How can I use Mysql for JDBC connection.How to make data source? I can able to done with MS-SQL. |
| | Hi, Can anyone provide a sample application that usses a login page, in which users can login and the login details will be checked from the oracle db. Thanks in advance.:) |
| | hi all, i want to display some data in dropdown from database using java.please send the code |
| | I need help on an assignment I have. The first part was to write a program that would declare an array with 150 elements, assign the "#" symbol to each element, then print the elements in such a way that it would spell a letter (in this case, "A") within … |
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