36,051 Topics
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| | How do i set up netbeans IDE for use on Windows 8 Enteprise Are there any download links?. I want to use netbeans with the latest oracle database in development. ..How will i set up the connection strings to the database in such a case .Finally how can i use … |
 | hi all! i have to send a whole vector as a parameter from a code java (eclipse) to a c++ code(VS2010)i have some quations about that: 1. how can i send the whole vector in once? i already know how to send it element by element so i want to … |
| | hi everyone i need your help, i ave a project where by i have to create a simple mortgage calculator. the problem is that i have to create a login frame where it will redirect me to the main frame which is the calculator.Could someone show me how to switch …  |
| | OK my original idea was to create a revision application for android using flashcards that a user could create. the application would provide statistics for how well the person was doing with their revision eg. no of cards correct/incorrect etc. I was then hoping to have an online database where …  |
| | Is it possible/compatible to use Session Types in Java for a cloud-based application using Windows Azure (SDK for Java)? |
| | import java.util.NoSuchElementException; import java.util.Stack; public class StackList<T> implements SomeList<E>{ /* Comments * only use offer(), poll()/remove, isEmpty(), and size() methods*/ private Stack<T> stack=new Stack<T>(); public StackList(){ Stack<T> stack=new Stack<T>(); stack=stack1; } public void push(T thing){ stack1.push(thing); } @Override public T pop(){ if(this.isEmpty()){throw new StackOverflowError();} return stack1.pop(); } @Override public void … |
| | I am trying to update with this code Result.updateInt("bank_ac_no",Integer.parseInt(acnotxtfield.getText().trim())); //this is the line I'm getting error. Here is the Trace java.lang.NumberFormatException: For input string: "2737383928291819" at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65) at java.lang.Integer.parseInt(Integer.java:495) at java.lang.Integer.parseInt(Integer.java:527) What's wrong? |
| | i want to write a function which calculates the Monthly depreciation and accumulation of an asset but i am having difficulties writing it to calculate and insert it into my datebase.I will appreciate the help private double getAccumulation(){ double Accumulation = 0; double Monthly_Depreciation; int Estimated_Useful_Life = Integer.parseInt(eul.getText()); double Cost_Of_Acquisition … |
| | Is java a platform Independent language. I think its no? My question is in what respect java is totally platform dependent. Is there any case? Share with Us. I have seen this question. So please reply quickly. Java is probably one of object oriented programming. Does it purely object oriented …  |
| | Hello, what is the meaning of System.exit() ? if System.exit(0) = close the program without error But, what is the meaning of System.exit(1) ? Is there is any System.exit(2), System.exit(3), etc ? Thanks you  |
| | I'm trying to create a list stack that implements some interface called SomeList The list stack should only use stack with no links. the itnerface has a number of methods that I would like to implement. So for SomeList I have something like public interface SomeList<T>{public void plus(T something);public E … |
 | (Total Sales) Use a two-dimensional array to solve the following problem: A company has four salespeople (1 to 4) who sell five different products (1 to 5). Once a day, each salesperson passes in a slip for each type of product sold. Each slip contains the following: a) The salesperson … |
| | /* * GUI Electric Bill Program */ package guielectricbill; //import the package to do GUI input/output import javax.swing.*; public class GUIElectricBill { public static void main(String[] args) { // declare variable to store user input String accountNumber, customerName, address; int KWH; double amountDue; // Welcome customer to the Electric Bill … |
| | Can someone please tell me why I keep getting a stack overflow when I try to create nodes in a priority queue? class Node { public int frequency; // data item (key) public char character; // data item public Node leftChild; // this node's left child public Node rightChild; // … |
| | Hi, How do i debug an eclipse plugin project? When I go to the MANIFEST.MF file- > Testing section - > Launch an Eclipse application in Debug mode,it starts debuggin the worspace code. I havent any breakpoints in the workbench code. how to i avoid this. appreciate a response thanks |
| | i want to get the value for Accumulation but it returns no value. Any help with resolving it will be appreiated private double getAccumulation(){ double Accumulation = 0; double Monthly_Depreciation; int Estimated_Useful_Life = 5; double Cost_Of_Acquisition = 2000; double Estimated_Residual_Value = 500; try{ Monthly_Depreciation = (Cost_Of_Acquisition - Estimated_Residual_Value)/Estimated_Useful_Life; Accumulation += … |
 | Hi all, as much as I don't like the API, it is becoming more and more important for me to start using it. I think I might need a guide of some sort which says what's what and what's where, if anybody has one please let me know. Today I … |
| | In the following example two threads share int counter. The increment_thread thread increases counter by one . The decrement_thread thread decreases counter by one . I use semaphore to control access to counter instead of making the two methods synchronized. Is this the proper way of using semaphore? When should … |
| | i want to develop a web base project. if any one have some web based project names plz give me. |
 | Hello Professionals out there, i am making a point-of-sales systems in java. And i have a jTable named "tbitempurchase" wherein I add the ordered items using an add button.I also have a table in mysql database named "itemSold". Now my problem goes like this, I want to insert the data … |
| | hi guys, i try write this java code in php using php java bridge: http://www.lucenetutorial.com/lucene-in-5-minutes.html when i found this line: IndexReader reader = DirectoryReader.open(index); i dont get it how to write it in php. i've tried but error result. when it be like this: Query q = new QueryParser(Version.LUCENE_40, "content", … |
| | Hi, Not sure if this the correct forum to post this question. I would like to know how to implement code completion for an editor in the eclipse plugin project. I created a multiPageEditor and now I am tring to implement code completion. I was not able to find a … |
 | Goodday The first random number working set is a set of 3 different integers from the range 2 to 7 The second random number working set is a set of 4 different integers from the range 4 to 22 Each of these working sets may be generated as many times(at … |
| | Hi every body I want to build a graphical user interface for my project and i need to provide the facility for the user to draw as many as some predefined shapes (rectangles, ovals, ...) as she wants and connect them with lines. she should be able to delete the … |
| | Hi I have a three folders i have compressed all the folders using jar. I want to access one of the java file inside jar file that is actually inside one of the folders to start the application. |
| | Hi. I was wondering how I could replace objects in a list without using a single loop. Here's what I have in terms of algorithm; but, I don't know how to implement.: replace(List list, oldObject, newObject) 1. if the first element in list is not null 2 if the old … |
| | Dear All, I have studied in my book that after compiling the RMI server it will produce two Class files RMIServer_Skel.class RMIServer_Stub.class But I have succesfully ran the RMI server and made the client connection, but i could not find any Stub or Skeleton files in my workspace. Why is … |
| | Hello all - I am writing a Depth First Search program in java for the eight puzzle problem. I have completed the coding but for some reason I am not able to print the exact depth at which nodes are being searched. Here is two of the methods that does … |
| | I am writing an asset monthly depreciation system and i have written a code which works but i want to set the values such that the user enters the value manually into the system. Currently the values have been declared with a variable. this is my code // declare an … |
| | Hello, i just started learning android and i thought to make a simple app by providing a simple rtmp url si i can play the video on android device but i cannot fine suitable tutorial to start with i tried following this link http://www.jwplayer.com/blog/24717/jw-player-59-html5-now-default-on-android but its not online anymore thank … |
| | Hello, all. Attached is a simple (for most) program that I'm working on. |
| | Hello, all. I'd greatly appreciate some assistance in getting this program working properly. Thank you! |
 | Hi guys I want to develop a pattern recognition system for my final year project. The system will be an interface between a blind person and a mute person; I have chosen android platform for the system as most smart phones use it. I want the smart phone to use … |
| | Dear Team, I have decided to prepare for Oracle certified Java Programmer certification. When i searched in Oracle site, It showed two certifications for OCJP. 1. 1Z0-851 (Java SE6) 2. 1Z0-804 (Java SE7) For the the second exam which is 1Z0-804 they mentioned, we need to pass two exam first … |
| | The server only does the basics. TODOs: The header method needs expanding. The file send method can't handle too large files. Maybe write custom buffer class since some buffering is done. Keep cache of recent files. |
| | Hi Friends I want to convert "Mon Oct 28 11:30:58 GMT+05:30 2013" Format to "2012-11-27T18:08:47.410+05" in Java. I dont know how to do it. Please help. Thanks in advance  |
| | Hi just wondering if anyone can advise why this is not working and offer a solution, I am new to java. Thanks in advance for any help. Print Pattern Feature The “print pattern” feature should function as follows: The user should be prompted to enter the following input values: ! … |
 | I have to create a quadrilateral program for school where you put in two points and find the area. For the Public double getArea() part it says "return type double is not compatible with void" How do I fix it? Main class public class Point { double x; double y; …  |
| | Hi, I have learned that servlet containers like tomcat handle concurrency in web application. I just want to get a clear comfirmation whether I dont have to multithread my business logic classes/methods(e.g database connections) when I am developing servlet applications. Cheers! |
| | Hi i need some help. I am developing a java web application using jsf (front-end) and primefaces. I have a drop down list in my .xhtml page containing Car,Bus,Other. On clicking 'Other', i want a text box to appear.Can you advice me how to do it? i have a java … |
| | Hello. Just learned about hashmap a week ago. My code can add an Employee's name/id/performance scale based on user input. I allow the user to also remove an employee by allowing user to input name/id to remove. However, when the user prints out sorted last name, the name the user … |
| | I have this code which saves the value into database from JSpinner SpinnerListModel monthModel = new SpinnerListModel(); String[] monthStrings = {"1Month","3Month","6Month","1Year"}; //get month names monthModel = new SpinnerListModel(monthStrings); JSpinner spinner = new JSpinner(monthModel); statement.setString(28,(String)monthModel.getValue().toString().toUpperCase()); But how to get that value back for Editing? I tried spinner.setText((String)monthModel.getValue(),29); But it says The … |
| | Hi all, I am having an issue with getting my Jbuttons and JComboBox alignment properly in the JPanel. I have tried changing the coordinates of the GridLayout around to try to satisfy, but they are working properly. I am trying to get my radio buttons to the far right and … |
| | Hello, all. The following is a problem I'm currently working on. I can't get it to run like the problem asks. Any help would be greatly appreciated. |
| | When I click on Button which fetch records from the database it works fine public void fetchrecords() throws SQLException { Statement stmt = null; String query = "select * from Employer where Fileno=1"; try { stmt = con.createStatement(ResultSet.TYPE_SCROLL_SENSITIVE,ResultSet.CONCUR_UPDATABLE); rs = stmt.executeQuery(query); while (rs.next()) { firstNameTextField.setText(rs.getString(2)); lastNameTextField.setText(rs.getString(3)); addressTextField.setText(rs.getString(4)); //and more records. … |
 | I dont understand why the image isnt appearing! please help.. import javax.swing.*; import java.awt.*; //import java.awt.event.*; public class level2 extends JFrame{ Container con= getContentPane(); ImageIcon bg= new ImageIcon("D:\\Raptor\\background3.jpg"); JLabel back= new JLabel(bg); level2(){ setDefaultCloseOperation(EXIT_ON_CLOSE); setLayout(null); setSize(1300,700); back.setBounds(0,0,500,500); con.add(back); setVisible(true); } public static void main(String[] args) { new level2(); } } |
| | I have created a linked list and I wish for the user to enter a Station and then the output is the number stored for that station. LinkedList myList = new LinkedList(); myList.addFirst("London", 5); myList.addNode("Manchester ", 10); myList.addNode("Liverpool", 20); myList .addNode("Birmingham", 50); This is the input for the user to … |
| | Write a Java program which adds all numbers that are multiples of either 7 or 9 up to 600. Ensure that numbers like 63 are added only once in the sum. Thanks for help |
 | My assignment is to create a program that asks the user what they want to do: 1-add a member, 2-delete a member, 3-see the arraylist of members, or 4- exit. I have the menu popping up, but I can't get it to go back to the menu after I execute … |
| | Hello, I am trying to execute a jar file with higher version of jdk. But it fails & the worst part is I am not getting any error message. Jar file compiled verison: jdk 1.5 Executed version: jdk 1.7 I assume the jar file is downward compatible. thoughts pls? Thanks! … |
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