35,619 Topics
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| | Hello, I am a noob in Java, and I am stumped with these 2 exercises. These are probably extremely simple for you all, so any kind of help with writing the program would be well-appreciated. 1. Write a program which simulates inflation of a balloon (2-dimensional circular shape starting from …  |
| | hi, i have created 3 reports in myeclipse blue 7.1 as customer_sale cutomer_region & customer_year. i want to create a jsp page in myeclipse blue 7.1. In that jsp page i have a drop down menu. now i want to include the names of all these reports mentioned above in … |
| | Hi, I created a sample frame in Java and connected with the database and when i converted to exe file the database is not accessible ..can any1 suggest me is it possible to access database in exe else wat method do i need to implement in order to acheive this. |
| | Hello, I am very new to JSP but I am familiar with Java. I am having an issue with some error messages I don't understand. when I use this syntax: [code=jsp] <jsp:useBean id="search" class="search.SecSearchParams" scope="request"> <jsp:setProperty name="search" property="*"/> </jsp:useBean> [/code] I get this error: The value for the useBean class … |
| | Hi everybody, So i am totally new to the programming world but I have manage so far to learn how to connect to mysql database to Java and execute a simple query. However, I would like to know if there's a way I could make this query to look like …  |
| | i have problem that in showpane Modify and Delete pane3 eventhough clicked delete button for the action but the combobox "Select Book" doesnt update in the list that the deleted book still exist. What happen ? any guide ? thx in advance . [CODE]import java.awt.*; import java.awt.event.*; import javax.swing.*; import … |
| | Hi. I am developing an e-mail application for lab works. I am using servlets mainly along with JSP and using HTML with CSS. I have two questions.Please tell me the solutions. Its important and its urgent. 1. As usual I give the provision for attachments.I wrote code for uploading files … |
| | hello . I am trying to simulate the MD5 hashing algo. My code: [CODE] private void jButton1MouseClicked(java.awt.event.MouseEvent evt) { try { MessageDigest object = MessageDigest.getInstance("MD5"); String str = jTextField1.getText(); byte arr [] = str.getBytes(); object.update(arr);//update the md5 object with the message arr = object.digest();//calculate the digest str = IntegerToHex(arr);//convert to … |
| | Hello guys, I am converting my servlet page into mvc form and struck at perticular point. I am using DAO class and VO class for database related tasks.Here I am sending u a little bit of my code segments so taht u can understand my problem. In DAO class:- //I … |
| | hi, everyone i'm new in java programming i need help in my simple project i have list contain names of persons from db .. i finished it using access ... the problem that i wanna to 'when i select any name of this two window open and chat between each … |
| | I getting an error from a code that I have been working on. The error is Exception in thread "main" java.util.InputMismatchException at java.util.Scanner.throwFor(Unknown Source) at java.util.Scanner.next(Unknown Source) at java.util.Scanner.nextInt(Unknown Source) at java.util.Scanner.nextInt(Unknown Source) at sample2.AdditionalMethods.main(AdditionalMethods.java:57) My code for the information is package sample2; public class shape { private String Name; … |
| | Hi i'm just start to learn jsp. now i got 1 task to complete. I want to create navigation in jsp by recursively. my case is retrieve from database and list in jsp. display all organization name in jsp from mysql. Organization ABC CDE EFG once they click any of … |
| | Hi, I am trying to create a mortgage calculator per an assignment and have it working ALMOST perfectly. I just need to add a loop to make it pause when the screen is filled and wait for an ENTER until the loan balance is 0. Can someone help me? Here … |
| | I am having trouble printing onto a JPanel. I am able to print any string that i want to. here my code: [CODE]import javax.swing.JFrame; import java.awt.BorderLayout; import javax.swing.JLabel; public class TestDraw { public static void main(String[] args) { final int WINDOW_WIDTH = 300, WINDOW_HEIGHT = 300; DrawPanel panel = new …  |
| | Hi guys, I just can't figure out how to traverse trough this heap. It's a 4-heap and I'm trying to implement a toString method for it. It should return a string and must be recursive. Like pre-order traversal. I'm lost with it. [CODE=java]public String toString(int index,String out) { int child … |
| | I'm trying to install java on my home laptop and it isn't working, i followed all the steps outlined by my lecturer but the javac filename isn't executing properly. Is it setup right by me?? In environmental variables PATH = C:\jre1.6.0_07\bin;C:\Program Files\PC Connectivity Solution\;C:\watcom-1.3\binnt;C:\watcom-1.3\binw;%SystemRoot%\system32;%SystemRoot%;%SystemRoot%\System32\Wbem;C:\Program Files\Metrowerks\CodeWarrior\Bin;C:\Program Files\Metrowerks\CodeWarrior\Other Metrowerks Tools\Command Line Tools;C:\Program … |
| | Hi, I am writing a jsp app. Thing is I cannot get the "hhello0" String in the destroy method to echo after the thread is stopped, fourth line from the bottom. Thanx already :S [code=java] package Transaction; import bean.*; import dealer.DealerDetails; import java.io.*; import java.sql.SQLException; import java.util.*; import java.util.logging.Level; import …  |
 | Hello friends. I'm working on a program to sort a list object using toArray, Arrays.sort, and Arrays.asList. The problem asks that I then apply Collections.binarySearch directly to the list object. I know what the problem is (which I have stated through comments in my code) but I don't know how … |
| | 1. Develop a Java application that will determine the gross pay for each of three employees. The company pays straight time for the first 40 hours worked by each employee and time and a half for all hours worked in excess of 40 hours. You are given a list of … |
| | Hi, I have Eclipse 3.2, Tomcat 6, openldap directory and Jdk 6 Installed on my machine. I have ldap and Tomcat plugins installed in Eclipse. When I try to create a new connection, I am able to establish a connection with tomcat, but when I try to browse the ldap … |
| | Hi everyone, I need to parse a text file based on a few delimiters. There are 2 problems I am having. I'll start with the first problem. I have no problem using the split () method to parse text by a single delimiter. For example: [CODE]String[] str = stringRead.split(":");[/CODE] However, … |
| | i'm still working on the property to let program. and it sort of works... its just when the user selects to delete a line from it it will delete it fine, but it will then duplicate all the items that where previously in it... EG: My File looks like this … |
| | Hi, I am calling the jsp page using httpUrlConnection.openConnection. The Jsp page displays the content dynamically by calling the javascript function. I am not able fetch the content of the jsp , when using the httpUrlConnection.openConnection, it displays the entire source of the page. Please advice . Thanks & Regards, … |
| | i need help on how to detect camera on USB if connected or no thanks in advance  |
| | Hi everyone! Im doing a desktop sharing project (net cafe) as final project in my institute. I need to handle another station through a home network. * Sharing desktop. * remotely shutdown. * sending a message. * retrieve a message. * remotely restart. So please help me to fine java … |
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| | I am trying to call the Oracle stored procedure in java. I have given below,stored procedure and java method which calls the stored procedure and returns the result set. I am getting the error Invalid column type :1111 or invalid column index. Can anyone tell me whats wrong in the … |
| | I have a .dat file with many lines. I need to overwrite a certain line. Let's just say I have to overwrite the 5th line of the dat file. How would I set the RandomAccessFile to overwrite at line 5 (or any line in general)? (P.S.: each line has 10 … |
 | I have hit a stone wall this week. I have tried numeous methods to get a functioning array into this code, and get the code to call for a total value. Now I have changed code around untik I no longer have compile errors, but now all of my values … |
| | Howdy, I've been having problems letting the computer figure out my answer to my math riddle. Im given a multiplication problem to find the answer to the following problem: 7xx x 4x _____ xxxx0 In this problem, every number from 0-9 is used only once. I found the answer the … |
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