36,051 Topics
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| | Can any one give me complete struts2 demo with struts-config.xml file specially use of bean and user bean with some discription.  |
| | I did the coding to create a pie chart file in png format file, the pie chart shows the percentage but in the bottom of the file, I want the percentage to appear in the chart itself, This is the codes I have used, String query = "SELECT name,flag from … |
 | I am not seeing why this code will not generate the output to my JFrame after it takes the input from the text file? How can I tweak this code to do that? Take input from file and display it on JFrame... JTabbedPane jtpane=new JTabbedPane(); JPanel jpan=new JPanel(); JTextArea txt=new … |
| | Your demo code is required to (DO NOT manually print out, write a FOR loop to do it) 1. print all white furniture 2. print the total cost of all furniture in the array. // How do i print these using my code: public class FurnitureDemo { public static void …  |
 | Hi, I have a text file, which i need to make sure is not getting modified. I have to mail this file to people and the file should not be modified by anyone in transit. What would be the best way to accomplish this. Posting it here because I was … |
 | Hi there, as I am learning java (providing I will have the time to keep going!) I was wondering if there is anywhere I can find some simple exercises to practice with. At the moment, as an introduction, I am reading a java for dummies book, so I am still … |
| | I have been working on this for a while and keep getting error after error. It seams like every time I fix something, I get an error for something else. This is the main class. import java.util.Scanner; //for scanner class public class ArrayOps { private int[][] numbers; //Holds a 2D …  |
| | I have 2 JComboBoxes that are using an itemListener, right now the code I have compiles but when I call for tankSize and fuelCost to complete my calculations nothing is returned and my answer is always zero. What do I need to change so the variables transfer to tankSize and … |
| |   My name is Nnamdi. I am a new member in this forum. I am learning Java programming and how to develop Java GUI application. In my learning process, I have encountered the challenge stated below. My question: I am writing an application to properly align the … |
| | I have started using eclipse for developing an android application and eclipse automatically aligns on the form the textboxes, labels and buttons that i place. Is there a way to disable this and place them wherever I want and resize them as I want? |
| | Hello I need some help completing a quiz program the program simulates a Java quiz I have completed most of the program but there are three issues that i am unable to overcome I tried some of the solutions that i found on daniweb and on google but they didnt … |
 | Hi everyone, I have a project that creates a Train that pulls Boxcars. The boxcar is supposed to be generic type and have attributes such as load that adds only a specific type of object to the boxcar. The train is supposed to pull all boxcars created. I have written … |
| | write java programme, using DO and WHILE to approximate 22/7 (pi)= 4-4/3+4/5-4/7+4/9-4/11+4/13.. |
| | (netbeans latest, windows 7) So, from what I understood, once I start a servlet program the html page with a form in it loads and I can debug the program only when I click the Submit button at the end of the form. if the form is doPost then by … |
| | Hey guys!!!I am a senior majoring in computing science and I was wondering If u have some ideas for my final year project which I plan to do in JAVA!!I was thinking of animating sth but I cant see how practical JAVA is for that!!! ANY IDEAS?????  |
| | hello. I would like to know how I can make out a Java code from a given mathematical equation like differentiation equations, summation and integration |
| | hi i have been working on my project to create a store and i have to add items and sell items, and once i add items i store them into a textfile separated by commas, and i made the add item button work perfectly but i am having trouble with …  |
| | I need to sort these strings in order and I have changed the code of my program which use to sort integers and now I need it to sort strings and I cannot get it to work, any help..... import java.util.Scanner; public class Strings { // -------------------------------------------- // Reads in … |
| | Hi everyone, i want to set input verifier for a jspinner when the user click a value and if the value is out of range (0 to 10) it must display a message like "Please enter a value between 0 to 10" and it must validate until the correct value … |
| | Hello, I'm looking for a CSV parser and I found this example.... package com.ibm.ccd.api.samplecode.parser; import java.io.BufferedReader; import java.io.StringReader; import java.util.ArrayList; public class CSVParser { String oneRes; private String line = ""; private int nbLines = 0; private BufferedReader reader; public CSVParser(BufferedReader reader) { this.reader = reader; } public String[] splitLine() … |
 | Hi all, This is going to be difficult for me to describe but I'm going to give it a go! I have tables called tblCPI, tblCPI_Staging, & tblVSeriesList. Please see the diagram.  Right now I am using SSIS 2008 to get data from Statistics Canada and load the … |
| | Hi guys. im writing a program to check an input string (a password) for its level of security (strong, medium, weak). here is my code for the method: public static int passwordType(String password) { //0weak, 1medium, 2strong int hasSix = 0; int upper = 0; int lower = 0; int … |
| | hey this sounds like a really simple question to me but I can't seem to figure out how to do it! My code so far is public class numbers { public static void main(String[] args) { final int N = (args.length); for (int i = 0; i < N; i++) … |
| | My program compiles but when I fun it I cannot get the city from the JComboBox to show in my JOptionPane. It shows up as "null" and when I click the clear button, nothing happens. I'm not sure how to fix these two problems. Here is my code: import java.io.*; … |
| | hey guys so i am having a problem in my assinghmnet . i am making a text file and it has to import to java and make a table from the text file . so there is what the txt file looks. 3 // this should be the rows 1,2,3, … |
| | [CODE] <tr> [B][U]<td><a href="inbox.jsp" ><%=rs.getString(1)%></a></td>[/U][/B] <td><%=rs.getString(2)%></td> <td><%=rs.getString(3)%></td> </tr>[/CODE] See lines in Bold.....after i click it has to set session variable with value reterived from <%=rs.getString(1)% >based on which i am going to display particular contents in redirected page |
 | Hey everyone! So I want to make a simple console based chat client as my first java project (ambitious I know) so here is what I have brain stormed as to What this program will entail (Let me know if I missed anything. * Cases (to handle arguments such as … |
| | Hi. I'm writing a program that reads information from three seperate classes. public class Animal { protected int id,animalTotal; protected String type; protected double mass; //------------------------------------------------------------------------ // Sets up an animal with the specified ID number, type and weight. //------------------------------------------------------------------------ public Animal (int animalID, String animalType, double weight) { id … |
| | So I'm working on a small calculator applet and whenever a button is pressed (generating an action event) i get this: Exception in thread "AWT-EventQueue-0" java.lang.NullPointerException. Something about a missing source? The variable m is an instance of my myFunctions class which houses all the necessary formulas. I believe the … |
| | Hi there, I am trying to find an explanation for what the `findWithinHorizon()` does. I landed on this page http://docs.oracle.com/javase/7/docs/api/ and I know that the method is part of the `java.util.Scanner` class (isn't it?). How do I find it in the page above please? thanks |
| | Today my pc came, (windows 7 32-bit) so i set it all up, it work i installed everything i needed to, but i downloaded minecraft.exe, so i ran it and loged in, then it took 1 second and it closed, a notepad document came up on my desktop (hs_err_pid3400), so …  |
| | package prjarrays; import java.io.*; import java.util.Arrays; import java.util.Collections; class BubbleSorting { public static void main(String[] args)throws IOException { BufferedReader a = new BufferedReader(new InputStreamReader(System.in)); int []num = {54,92,04,98}; -> Arrays.sort(num, Collections.reverseOrder()); for(int str : num) { System.out.print(str + " "); } } } > cannot find symbol method sort(int[],java.util.Comparator<java.lang.Object>) why …  |
| | i'm writing a text based game that creates a world based on the data inside of the specified file. however, the code i have won't let me use the function DataInputStream.ReadFully(byte[]b) Code: package textgame; import java.io.DataInputStream; import java.io.FileInputStream; import java.io.IOException; import java.util.Stack; public class world { Stack<String> LevelData = new …  |
| | Hi,I wish to simulate a traffic flow for a roundabout with 3 exits and be able to change how many cars enter and exit the roundabout and randomly turn off the exits. At a later stage I would also like to be able to input traffic lights to see would … |
| | So this more than likely has a simple answer, but i cant seem to find it. I have a 2d array in one class, what I want to do is get this array into my other three classes. Now I'm not sure but I believe I have to use inheritance, …  |
| | import java.util.ArrayList; import java.util.Iterator; import java.util.LinkedHashMap; class oldEmployee { public static final int length = 0; static int empid[]={1,2}; static String Name[]={"name1",name2}; static String State[]={"state1","state2"}; static String City[]={"city1","city2"};; static String Area[]={"area1","area2"}; public Employee(int empid,String Name,String State,String City,String Area) { this.empid=empid; this.Name=Name; this.State=State; this.City=City; this.Area=Area; } public int getEmpId() { return … |
| | I am trying to switch the below code to sort in descending order rather than ascending. It works when counting upwards, but nothing I try helps with getting it to count starting with the largest number and count downward. public static void insertionSort(Comparable[] list) { for (int index = 1; …  |
| | I'm trying to create a program that will draw an equilateral triangle with an oval at the center point when the mouse is pressed, and while the mouse is being dragged, the triangle will redraw itself so that the triangle remains equilateral regardless of where the mouse is (the mouse … |
| | Hi, I am currently making an assignment for JAVA, but I get stuck at the following. I need to make a simulation of a shop where a customer puts objects in his "basket" and with that basket you go to the checkout counter. Now we have to make it possible … |
| | I have this assignment for my java class, it runs fine, but the professor wants us to incorporate a private gradeExam method, which I don't know how it work fit, since I cannot call it from the DriverTest class which contains my main. package project6; /* A demonstration of how … |
| | I posted this somewhere else but I think it was deleted so I'll post it as a new question... Here's my problem; I've been developing a packet sniffer using the Jpcap library from http://netresearch.ics.uci.edu/ . I was developing using the windows version of the java library, but now I realize … |
 | Is it possible to get location in form of text through Google map using Android java? |
| | Hi there, as one of my first programs in java, I thought I will do a simple (!) lottery program...needless to say it doesn't compile, and after looking at it for quite awhile trying to unsuccessfully spot the error (I am not sure how to debug in netbeans, any advice … |
| | Hello, My problem is that I have a class, which needs to extend either one of two classes - the one it should extend depends on some value that is determined during runtime. I understand that there isn't a concept of having an if (this condition) extend thisclass else extend … |
| | Create an applet for a calculator application in java program |
| | Hi All... I am new to java, I am facing problem... Problem: 1) I want to create a ArrayList <String> and add Strings into it. problem: 2) I want to compare two Array List elements . their size and contents (strings type) which may be stored in any order. For … |
| | I have the main part of my code done but I don'T know if I should use an action listener or an event listener for my JComboBox. I have 4 JComboBoxes and only need to retrieve the info from my vehicleBox and fuelBox at this point. I need to take … |
| | I cannot get this to show up when I run it and I can't figure out whats wrong. import java.applet.*; import java.awt.*; import java.awt.event.*; import java.text.*; import javax.swing.*; public class TravelCostEstimator extends Frame implements ActionListener,ItemListener { //This part defines how the program will look Panel partOnePanel = new Panel(); Label … |
| | This is a project I am working at my school as an introduction to two dimensional array. In this program, I attempted to create a two dimensional array, figure out how many neighbouring bacteria said cell have, and create, destroy, and leave the cell as it is. The error I … |
 | I'm having tough time with netbeans. I am trying to add external image files to the netbeans project but confused where to place them. I copied the image files in every folder of netbeans(as i was tired) but nothing worked. Where exactly I should place the external resource files(images,videos,auidos etc).. |
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