36,051 Topics
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| | hi all i want to create a download manager program that downloads programs(executable files) i search the internet but i didnot find something useful i would be greatful for any help thanks in advance |
| | Hey guys!!! Just found this wonderful forum.....Thanks for the guys who run this forum.. I am an Elec. & Telecom engineer... I understand Java Programming & I have more than 90% of the concepts of core-java and good knowledge of jsp,servlets,struts....I have some basic knowledge of oracle.... I have a … |
| | I wanted to read data from multiple files simultaneously but I am getting NULL error. Could anyone help in pointing out my error in the code. I am not sure if I can make arrays of FileInputStream and DataInputStream the way I have done. [CODE=Java] import java.io.*; class Count1 { … |
| | So I just updated to Mac OS X 10.8 and I'm having a serious IT problem that is preventing me from compiling any code. It looks like I've installed Java 7, but its trying to access a nonfunctioning version of OpenJDK8  |
| | What I want to do is to take a 2d int array and use it to create a Matrix (a class I will be defining) which will effectively wrap all the values of the 2d array together so that I can perform matrix multiplication for coordinate translation. I am rather … |
| | int main() { float a,b,c; cin>>a >> b >>c; if(a<(b+c) && b < (a+c) && c< (a+b)) { cout<<"\nIt is a Triangle.”; if (a==b && b==c) cout<<"\nIt is a Equiletaral Triangle.”; if(a==b || a==c || b==c) cout<<"\nIt is a Isoceles Triangle.”; else cout<<"\nIt is a Scalene Triangle.”; } else cout<<"This … |
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| | Please any one can help me to fix my last statement of code I'm traying to have a user input the temp and then convert ot either F or C. But my last if else statement doesnot engage well with the over all code. I'm beginner Java programnig. Thank you …  |
| | I have created two folders with name 1)JSP containing jsp file(for login) 2)JS containing javascript file(for login validation) I have linked javascript file with jsp file int he following way. <script type="text/javascript" src="../JS/loginValidate.js"> How can I access parameters of login page(jsp file in JSP folder) in javascript file?  |
| | go through every combination ie(0,0,0,0),(0,0,0,1), .... ,(3,3,3,3) But in a general way such that it's always 0-3, but it may be 4 digits or it may be 5 digits or any other number? If I know the length I could do nested for loops, but since I don't...is there an … |
| | Hi, I am new to Java and is working on code in java which i need to keep a static sql script in property file and passing variable to it through java code and then iterating that property file to pass the variable value and writing that generated script to … |
| | I have javascript code with displays the placeholder attributes on browsers which dont support HTML5, I am testing the code in IE. It works on every field which is type text. But when its type"password" it displays the placeholder as a password and not text. I need to it show … |
| | I just download new version of eclipe on to my computer and it create a folder called 'workspace'. Is there way i can put all my project from my old workspace in to new workspace? i tried copying from old workspace and pasting in to new workspace. than i open … |
| | Hello, I want to compile multiple jpeg images into a AVI video. I downloaded the JMF, but can't seem to find any code samples to get started with it. A google search showed that download has samples shipped along with it, but mine doesn't have any samples, just jars, readme, … |
| | Hello everyone, I'm trying to make a simple telnet chat program, but I quickly came to the realisation that I don't really know how to get the client to bind to the server. I understand the logic of how I'm going to send data to a connected client, but the …  |
| | Hello, My program needs to capture the screen every 1 second until stopped by pressing the GUI button. In the GUI class I used a for loop to go infinite, but that probably does not work because it takes time to capture, & save screenshot, but the for loop fires … |
| | Hi all, following is the code for a simple but pleasant animation (3000 colourful circles with random sizes etc. bouncing off edges of the app window) What I have problem with is getting the "coef" to be automatically updated on "jSlider1" change in order to control the animation speed Also … |
| | I am attempting to make an interface with textfields where the data entered into the fields is stored in a variable, and then written to an external file. I am trying to use FileWriter fw = new FileWriter() to tranfer the variable to the file, but I cannot find an …  |
| | Hey everyone, I'm new to the concept of stacks and queues. I think I have the basics, but I have a quick question. If I am wanting to swap an object, say x, for another object, say y, in a stack or a queue, is this possible without introducing an … |
| | Hello everybody. Here is my remove method for bst. As you all know, there are 3 cases to consider while removing a node from bst. For the last case, when a node (which is to be removed) has 2 children, I want to use predecessor instead of successor to change … |
 | Hey everyone. I was doing a simple test program today that my professor is asking us to do just to test to see if his Ant script works correctly and I came across a problem that is confusing me. My prof wants us (after created all of our homework class … |
| | Hello Is there anyway to move a string array elements to a vector and have an output that list these elements? Let's say the array contains the following elements `String arraySize[] = {"A", "B", "C", "D", "E"};` and I want to move these elements to a vector.. How would I … |
| | Rewrite above program such that the processes instead of threads are created and the number of child processes created is fixed as two. The program should make use of kernel timer to measure and print the real time, processor time, user space time and kernel space time for each process. |
 | I use Mint Linux. What do I need to get in order to get started programming in java? Is there a particular IDE that is good for Java or should I just stick with vi(m)? My skill level is as follows. Iv succesfully written a date validation program in C++ …  |
| | I am having a problem with a program I wrote.. For the life of me I can't figure out what's wrong with the program.. the program should calculate a random value and then outputs an intrest rate and present value.. The problem is that I am getting zeros instead of …  |
 | Hi all, I have just installed the jdk on a windows7 machine 64bit. I run the first test application in the terminal and got the following message: "'java' is not recognized as an internal or external command, operable program or both file". So I had a look online and found … |
 | There are 2 sets of 4 buttons being created. The `ImageIcon` of the 1st set of buttons are to be dragged onto the 2nd set of buttons. The boolean `enab` variable is for determining if the 2nd set of 4 buttons are enabled or not. I initially set the boolean … |
| | package com.servlet.filter.UserAuthFilter ; import java.io.IOException; import java.util.ArrayList; import java.util.StringTokenizer; import javax.servlet.Filter; import javax.servlet.FilterChain; import javax.servlet.FilterConfig; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; // Implements Filter class public class UserAuthFilter implements Filter { private ArrayList urlList; public void destroy() { } public void doFilter(ServletRequest req, ServletResponse …  |
| | Please can anyone give me proper link for learning basics of JAVA...  |
 | Hi, I am messed up with jscrollbar in my applcation.I have a jtextarea with jscrollpane in my application. Whenever the text in the textarea fills up completely , i want the scrollbar to scroll down. As soon as new text is added to the textarea , the scrollbar should move … |
| | This is my java code, all the id's are the ids of divs on the page. They are all labeled respectiviley. It takes the input of the form. There are six possble errors that can occur which are, the emails dont match. First name contains characters other than letters, last … |
| | hi what i want is to separate a file in many variables and store it in an arrayList to use it for creating objects and printing. The file is as follows: L1234; Land; 50000 euros; 120 sq.m.; Artemida Attikis; near the sea; for sale FF4234; Flat; 120000 euros; 72 sq.m.; … |
| | Hello, When I am trying to build my application in Netbeans I have this error message coming up in the output. null575775 is invalid. I have check the null file but there is nothing in there. Any ideas? |
| | Here is my code, and i would like to read images from my mysql database and display it over a JButton using the BufferedImage casting into Image. Everytime i want it to display, it would fail to read the data and run to the Exception, may i please have help … |
| | loop through javascript show and hide div  |
| | Hi, I put a JTextArea on mu gui.But i can't print multiple lines on that?Why is that?.I have created a Item class and then created an Item object array in my gui.Then i print it on my jTextArea.This is my code i have put in my button. jTextArea2.setText("Item Name"+" | …  |
| | In the main class the user enters text trying to find the file in the same directory as the source file. The string gets passed into the constructer and a file object is made but the file isn't found. The print statements are just to find out what is happening. … |
| | From Class Model: public TableModel getTableData() { TableModel model=null; try { String sql = "SELECT eventID as 'Event ID', date as 'Date',eventName as 'Name', time as 'Start Time' FROM Event"; pst = conn.prepareStatement(sql); rs = pst.executeQuery(); model = (DbUtils.resultSetToTableModel(rs)); } catch(SQLException e){ e.printStackTrace(); } finally { try {rs.close(); pst.close(); } … |
| | I need a source code for JAVA for balancing a chemical equation. CH4 + O2 = CO2 + 2 H20 CH4 + 2 O2 = CO2 + 2 H20 |
| | I am coding an image puzzle game and one part of the code is to compare the pieces the user has selected to the pieces of the correct image to check if it is correct. Each image piece is already added to a JButton as an ImageIcon. An identifier is … |
| | Hello everyone am facing an error exception SQLServerException: The TDS protocol stream is not valid Jan 19, 2013 4:21:02 PM com.microsoft.sqlserver.jdbc.TDSReader throwInvalidTDS SEVERE: ConnectionID:18 got unexpected value in TDS response at offset:1508 Jan 19, 2013 4:21:02 PM com.microsoft.sqlserver.jdbc.TDSReader throwInvalidTDS SEVERE: ConnectionID:18 got unexpected value in TDS response at offset:1451 com.microsoft.sqlserver.jdbc.SQLServerException: …  |
| | hi i need to get pixel value of an color image but i don`t know how. i need code for do this. |
 | So.... I am just wondering which would be the better one to learn for todays market - ASP.net or JSP. I have to take one or the other and am not sure which one is the better choice. If it were up to me I would say neither and go … |
| | Hello, I am getting Identifier expected and Illegal start of Expression erros in this code: [code] //"Math is our Game" - A math testing program for First through Fourth grade students //Import GUI packages import javax.swing.*; import BreezySwing.*; import java.awt.*; import java.util.Random; //import TurtleGraphics.*; public class Math extends GBFrame { …  |
| | import java.util.Scanner; public class Lab7 { /** * @param args */ public static void main(String[] args) { Scanner scan = new Scanner(System.in); int counter = 0; String[] letters = {"A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"}; final int ROW; final int COL; System.out.println("Please enter the total number of rows: "); ROW = scan.nextInt(); System.out.println("Please enter the … |
 | Hi there i woul like to pass my variable "testiframe" from javascript to asp, hw can i do??? Thi is the code : <script type="text/javascript"> if (location.href != top.location.href) { testiframe="ok" } else { testiframe="ko" } </script> |
 | Hi, I'm hoping someone out there can help me, I am trying to create a basic application that transmits GPS co ordinates of the device to a server. I am a complete noobie to socket programming (well, I covered the bare basics in college this year). As a stepping stone, … |
| | Hello, Me very new to java prgmng and got to redesign a C proj in java. Might be very insane question but not for me. My c poject has a file, called headerfile.h and the structure looks like this #define ID_File1 0x6F01 #define ID_File2 0x6F02 ... .. likewise all constants … |
| | I have a program that creates a GUI with three text fields in it, and two of these fields is supposed to accept a numeric value. I want to know how to get the numeric entries and store them in a variable for further calculations please. I know how to … |
| | requirement: Design, Implement and test the Invoice class An Invoice class groups InvoiceItems into a single object. Each Invoice has a unique serial number:the first Invoice has serial number 1, the second has serial number 2, etc. (Hint: implementing this will require a static variable.) A newly created invoice will … |
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