36,051 Topics
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| | help how to make payroll using java program and the following conditions: 1.one dimensional array 2.two dimensional array 3. accept inputs of string, integer and double data types 4. validation using if-else-if 5. use of loops constructs 6. computation 7. summary 8. use of JOptionpane/system.out.print pleas help me |
| | hi, I am developing one application for upload and download the files using applet and servlet. My problem is, when i upload the files from client to server is working. but when i download the uploaded file from server to client, o byte only download.. once refresh the server, file … |
| | Help ! I am new to jsp. I am writing the part of my code. It has 4 textbox fields - Name, Module, Module, Contact no. In my code 4 rows are created each having the 4 fields. What I want is that after user comes to the 2nd row, …  |
| | Dear all, i'm facing a prob for past few days that my servlets classes are not referenced properly in glass fish server . i downloaded a project from sourceforge.net named Javalibrary [url]http://sourceforge.net/projects/javalibrary/[/url] i imported all the files and all files working properly in netbeans i mean i can run the …  |
| | I should create a Java program called FindThatNumber.java. The program should generate 10 random integers between 1 and 100 (inclusive) using Math.pow( ) and then store them sequentially in an array. The program should then ask the user to enter a single integer. If the integer is in the array … |
| | I need some help with understanding an error that I am getting. Can anyone help me. Here is my problem. I am trying to hardcode information for a mortgage calc and I am getting an illegal start of expression error. Here is an example: MortgageLoanCalculator.java:15: illegal start of expression double … |
| | Write a method that computes future investment value at a given interest rate for a specified number of years. Use the following method header: public static double futureInvestmentValue(double investmentAmount, double monthlyInterestRate, int years) For example, futureInvestmentValue(10000, 0.05/12,5) returns 12833.590. Write a test program that prompts the user to enter the …  |
| | String class provides us with the method String.valueOf(some stuff) that basically converts "some stuff" into a string.. But we can also concatenate "some stuff" with an empty String (""). Both these methods result in a String representation of an object(or other data type) so my question is what is the … |
| | The application will ask questions like: What comes after D? A child is expected to answer the question and the application will inform the child if the answer is correct or wrong. The application will ask a total of 20 questions. After all 20 questions have been answered, the application … |
| | I have no idea whats wrong here, i am fairly new to java.. heres my code.... [CODE] private JPanel pnlLogin, pnlFinalLogin,pnlUser, pnlPass = new JPanel(new BorderLayout()); btnLogin = new JButton("Login"); lblUser = new JLabel("Username:"); lblPass = new JLabel("Password:"); pnlUser.add(lblUser, BorderLayout.WEST); //pnlUser.add(txtUser); pnlPass.add(lblPass, BorderLayout.WEST); //pnlPass.add(txtPass); pnlLogin.add(pnlUser, BorderLayout.WEST); pnlLogin.add(pnlPass, BorderLayout.CENTER); pnlLogin.add(btnLogin, BorderLayout.EAST); … |
| | I have an eclipse application from which i trigger an Swing widget.On click of a button on the SWT composite a window pops out which contains the Swing Table. Now i want a button on this Swing page to show up an eclipse workbench window. Any idea on how I … |
| | When I try to run my WordSort class with another class using the code: WordSort ws = new WordSort(sentence); ws.sort(); The program prints out what I want it to in the first method but for the ws.sort() method, the program prints out null. I would like it to print out … |
| | I'm making a game as my project in school. I'm having a problem regarding double buffering, im trying to draw an image (drawImage(,,,,)) into the double buffered image, I can't seem to make it work help please =D [CODE] public void render() { if(doubleBufferImage==null){ doubleBufferImage = createImage(PANEL_WIDTH,PANEL_HEIGHT); // Set Size … |
| | hi, here is my code having return method that working correctly when i print it from inside of the method, but if i call from main method its shows only one output instead all results.. [CODE]public class SearchCompare{ .... public String process(){ String showResult=null; ... .. for (String found: names.keySet()) … |
| | please tell me where i'm off the window opens but no menu bar. the error says : java:52: '.class' expected menuInput[][] = array [row][col]; thanks hs [CODE] import java.awt.*; import java.awt.event.KeyEvent; import javax.swing.*; public class Driver{ public static void main(String[] args) { TheWindowObject aTestFrame = new TheWindowObject ("test"); } } … |
| | hey guys, i have to do this program and i'm having trouble: Write a program that lets the user enter the loan amount and loan period in number of years and displays the monthly and total payments for each interest rate starting from 5% to 8%, with an increment of … |
| | delete this, solved, had to do with how a variable was declared |
| | I just wrote my first program using methods (I am only on chapter 5). I am not sure where I would use javadocs other than the ones that I already have in my code. Can someone help me? [code]/** * @author Brock Shelton * Date: March 15, 2010 * purpose: … |
| | Hi all, I have been trying to find this out for 4 days straight, doing all types of research and yet I cannot find it, although it seems like one of the most fundamental things I can think of. I am new to jsps and servlets but not new to … |
| | Hello everyone :) My problem is that my input will not be transfered when i build a new Object. To understand my problem i give you first the output: Welcome Hero! Show me your Attributes! Enter your Name: KIKI Enter your Strength: 50 Enter your Health: 60 Enter your Intelligence: … |
| | import java.awt.*; import java.awt.event.*; import java.io.*; public class StudentWriteApp extends Frame implements ActionListener { //Declare stream objects FileOutputStream outputStudent; //Stream to create file ObjectOutputStream objSaveStudent; //Stream to save an object //Declare components TextField txtStudentName = new TextField(20); TextField txtAddress = new TextField(20); TextField txtResults = new TextField(25); Button btnSave = … |
| | Hi , I'm a new learner of Java I start study Java since 2 weeks one of my friends challenge me to type program that show the number which I enter , It's even or odd . could you help me about the main things ,,, |
| | just needed to know when does getHeaderField(String) shows null. Is there any other case where null is returned even if the header exists |
| | Hello everyone, My aim is to include content dynamically in JSP but I have no means to tests and I don't know JSP. My code is already working in PHP and I would simply need some help to convert it to JSP... My PHP code is : [CODE] echo file_get_contents("http://www.myserver.com/newsletter/?action=detailnewsextern&profil=CocaCola&extern=1&inter_lang=fr&limit=3&".$_SERVER["QUERY_STRING"]); … |
| | All, Basically what you have here is a PART of my program. Here I am supposed to get the LENGTH of a rectangle from a user and return that length to the main method for further use. My program works fine if I take out the input validation but I … |
| | [code]<% String user=request.getParameter("LedgerName"); ResultSet rs=st.executeQuery("SELECT RoomMasterID,RoomNo FROM RoomMaster AS RM, LedgerMaster AS LM WHERE RM.LedgerID = LM.LedgerID AND LedgerName = '" & Me.datRoomType.SelectedItem.Text & "' AND RM.Status <> 'NO' AND RoomMasterID NOT IN (SELECT DISTINCT RoomMasterID FROM BookingMaster WHERE ' " & Me.datarrivaldate.AmericanDate & " 'BETWEEN FromDate AND ToDate) AND … |
| | Hi everyone , I have huge problem I developed a jsp project which work great on tomcat on windows through eclipse but when I run it on linux tomcat I get error symbol can not be found that means the compiler does not recognize my class when I use it … |
| | how to create a new excel file on click of a button in java? |
| | Oje me again... :$ Hello everyone... I have a superclass Human and a subclass Warrior. Problem is, human got this method: [code] public void Reveal() { System.out.println("I am " + name + ". "); System.out.println("My Strength is " + strength + " my Health is " + health); System.out.println("My Intelligence … |
| | Hello everyone... For now i have build a Human class and i want to test it now but on 2 lines there is an error and both errors states "void expected". I have a main function in my class but later i gonna remove it because i want this Human … |
| | I am using netbeans 6.8 and the program is running in a applet. Hi,would you know the answer to this simple question.When a user is prompted from the text area to input their name in the textfield what would make the program display the next paragraph of text in the … |
| | Hi All, I am testing the web services I have deployed on my glassfish but upon clicking the "test" button, an exception occured. For reference, pls see exception below. javax.servlet.ServletException: javax.xml.ws.WebServiceException: {http://services.wet.webservice.ngin.smart.com/}AccountManagementService is not a valid service. Valid services are: {http://services.lawak.webservice.ngin.smart.com/}AccountManagementService at com.sun.enterprise.webservice.monitoring.WebServiceTesterServlet.initializePort(WebServiceTesterServlet.java:569) at com.sun.enterprise.webservice.monitoring.WebServiceTesterServlet.doGet(WebServiceTesterServlet.java:184) at com.sun.enterprise.webservice.monitoring.WebServiceTesterServlet.invoke(WebServiceTesterServlet.java:119) at com.sun.enterprise.webservice.JAXWSServlet.doGet(JAXWSServlet.java:237) at … |
| | Assignment: One way to calculate ex is to use the infinite series expansion ex = 1 + x + x2/2! + x3/3! + x4/4! + ... If the loop variable is named i, then the ith term is equal to xi/i!. a. Write a method called myexp that adds up … |
| | Could anyone give some info on the printf() method.. I know we can put %d and %s in the format argument so that it takes a string data type and a decimal data type but apart from that are there any other uses of printf()? some simple examples will do … |
| | i'm want to make a voice recognition system using java but someone told me that voice recognition is hard using java is it so??if not which package is best to use for it in java ?? |
| | Hello, i have a simple question. Let's say you have 3 private attributes. If you want to insert a value you use a set method and when you wish to display its content you use a get method. When you use a constructor with a parameter list e.g.: private String … |
| | Hello, I need help with the print function. Everything works fine, but when I run the that function it gives a stack over flow problem. I do not understand why when this print function works fine with the other binary search tree implementations. [CODE] public class SplayTree<AnyType extends Comparable<? super … |
| | hi all, i am final year university student and i need some ideas for developing a distributed application to my final year project. any ideas ,example, that help me to finish my project in time because our last day of proposal is 05/04/2010 i do not need code just ideas … |
| | I wrote a program in actionscript3 and it opens in any browser. Is it possible to run it to open in a window (container)? |
| | I trying to get text only from html code (no tags and exec) I used the next command (regular expression): htmlSurce = htmlSurce.replaceAll("\\<.*?*\\>", ""); it works fine but all the text between <!-- --> is not removed how can I remove it??? |
| | I'm writing a class program for a pre-wrote driver. I'm having issues accessing the array variables from the driver. I know my problem is that my setProject is trying to take my array as an argument, but the specification calls for two ints(array index, array index value). But I'm not …  |
| | Ok so first off hello all and thanks in advance for your help. Ok so I've done some research with regards to the error messages I'm getting and I've checked all my curl braces so i don't know what could be wrong with. Anyways I'm writing code to emulate the …  |
| | hi im trying to put random letters into the array i created (only two letters 'x' and 'b' but they need to fill up the whole array) right now its just numbers between 0-9. does anyone know how to change them to letters, if so thanks! :) my output is … |
| | When i write in my program double pi = Math.PI; This will give me a value of PI accurate to many decimal places, but what if i want to limit this number lets say to 3 decimal places.. [b]Is there such a method in Java? [/b] (Im not talking here … |
| | Hi im trying to make a 10X10 board using arrays and have to fill up 2/3 of the board with the letter b, and 1/3 with the letter x. Right now i have created the board and my output shows up as zeros for some reason. can somebody please help? … |
| | I want an user to enter a word ...this program will tell the person if it is a palindrome...how do i insert joption pane code into this: public boolean isPalindrome(int start int end) { //separate case for substrings of length 0 or 1 if (start>=end) return true; //get first and … |
| | Can anyone outline the use of the keyword "instanceof". I mean, when do we use it etc.. Couple of examples would make it clearer i guess... |
| | Hi all, I am very new to the Java and would like to get help with the Swing components in the thread: below is an ActionListener for the MOVE button which would simulate random movement of random circles on JPanel. I have created separate class RandomCircles which extends JPanel and … |
| | i want to create a poll/vote for my website..... the users should have registered. i want a user to vote only once. should i store their username in the database. if so how can i do it effectively? i am using db2. |
| | Ok, so I've been stuck for a little while now on this problem. I'm trying to pass an array of Tabs and I'm just not doing it correctly. I believe I'm missing something simple, because I need to learn more about what is happening with my code rather than just … |
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