36,051 Topics
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| | I once upon a time had problems with buttons and getting windows to show up, now cannot get output of loan data into JList, code is below, any suggestions? next change is to add array (which I think I can do) and graphics in the form of a graph but … |
| | hi , can any one suggest mw which book is good for j2ee i am good in core java |
| | Hi, I have developed a Java swing based application to work in Windows 7 platform. But the application is having some issues as below : 1. I have a few tabs labeled like A , B , C ,D side by side in my application. If I am using jre5 … |
| | Hi I'm new to JSP and am having a right battle with session scope. Here's what I'm doing: I have created a class with some variables and methods. As I want to be able to access the contents of my created object in other pages, I have instanciated my class … |
| | wat's guys? i have a java program and i want to connect it with mysql,how can i get my prob solved?or if i can view any source code that can help me. |
| | Hi Folks, So the problem im having is trying to make some code less clunky. I recieve a list of random codes in the form of an Enumeration. I then retrieve a number of codes i read in from a properties file going from most important at the top to …  |
| | [CODE=java]import javax.swing.*; import java.awt.*; import java.awt.event.*; public class Plane extends JApplet implements ActionListener { JTextField input; JLabel prompt1, prompt2; JButton yesButton, noButton; int section, seats[], smoking; int nonsmoking, people; public void init() { input = new JTextField( 4 ); input.addActionListener( this ); prompt1 = new JLabel( "Please type 1 for …  |
| | hi i have validated some fiels in jsp using useBean . But am nt able to get the values into another page.can anyone help me.This is my code. jsp file [CODE] <%-- Instantiate the form validation bean and supply the error message map --%> <%@ page import="com.mycompany.*" %> <jsp:useBean id="form" … |
| | I am having some problems with simulating POisson arrivals and departures in Java. I want to simulate 400 cars/hour as arrival rate and 20 cars/hour as departure rate. I have a parking capacity of 500 cars where these cars enter/exit. When I am checking occupancy values, even after a couple …  |
| | Hi everyone I have a question and I need your help I want to sort an array but I dont want to change the index I mean if I have an array F[6,5,4,3,2,1] it will be like this 0 6 1 5 2 4 3 3 4 2 5 1 …  |
| | OK I have yet another homework problem. Again, help me by teaching, not writing my code for me. I have looked through the pages of threads on collision detection and found nothing to answer my question. My issue is that I have a collision detection method that should (in theory) … |
| | Hey, We got an assignment to host a website, our members must be kept in a mySQL database. I honestly have no idea where to start. If you could just help me with the basics steps. Ill research the details myself. Here's what I've done so far. 1.I downloaded and … |
| | I am new to java and have been working on a project. The project involves two files: One with student ID numbers and their answers for 10 different questions. The second file contains a bunch of ID numbers from the first file. The second file has id numbers for a … |
| | I have a 3x3 array of [ICODE]MSTextField[/ICODE] which is a class I created which extends [ICODE]JTextField[/ICODE]. I'm trying to set all of the text fields to display the empty string ([ICODE]""[/ICODE]). My problem is I'm getting a nullPointerException at the end of the method which is supposed to do this. … |
| | Hi, I need help with some small exercises. I'll try my best to provide my code but these are ones that I don't know how. So... maybe you can help me with yours! Thanks 1. Question 1: A program contains the following method definition: [CODE] public static int cube(int num) … |
| | Hi everyone. I'm using Tomcat 7.0.8 I have created servlet, which loads image to "webcontent\pic" folder of my project. Then I need to display this image. The servlet works, but with only restriction: i need manually refresh content of project, or directory (I'm using Eclipse). Otherwise ugly cross will be … |
 | Is there a decent IDE for Java? Meaning, one that you don't think will end up making me rage and have annoying features that get in the way all the time making it unsuitable for development? What is the best IDE performance wise? |
| | Hi All, I have three combo boxes in a jsp file in a form. After i select valus for the three combo boxes I click search button which is a submit button, on submit the corresponding action file is called, there I can get the values by request.getparameter("name"); I just …  |
| | Is there a cleaner way to close out of a GUI window in Java then just clicing the X in the upper right hand corner? When I do this I get a NullPointerException error. Is there a way to put an "Exit" button in a GUI window so that the … |
| | class A { int add() {} } class B extends A { int add() {} } class C extends B { i want to call here A's class method add using A a=(A)this; t.add(); it is possible or not } class D { C c=new C(); } |
| | i dont know how to get the image and how to store the image in the database plzz give me the complete example so i can complete my project plzz help me my project external submission date is near plzzz plzzz help me anyone |
| | i making a system, in which at max 10 users can login and work independently. But the problem is that when a user logs out, i am just redirecting him to the login page, i want to end that session, so that IF HE CLICKS ON THE BACK BUTTON, HE … |
| | [code]textPane = new JTextPane(); textPane.setBounds(337, 33, 290, 198); textPane.setBackground(Color.LIGHT_GRAY); textPane.setEditable(false); textPane.setLayout(new GridLayout()); JScrollPane scrollPane = new JScrollPane(textPane); scrollPane.setBounds(337, 33, 290, 198); add(scrollPane); searchButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { List<MainManagement> sList = new ArrayList<MainManagement>(); MainMngDao mmd = new MainMngDao(); sList = mmd.search(); for(int i = 0; i < sList.size(); … |
 | Hw do i reverse the mod function. That is: 6 mod 2 is 0. Nw hvn my result 0, dnt knw wat 2 is cald in dis case bt i got it as wel. Hw do i get bak to 6. 6%2 = 0. Hw do i reverse dat. I … |
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| | i'm designing an application as a project work in my school but i'm hooked,i need help on how to upload a picture from a folder or directory via a JButton,though i can do that with PHP but not with java....THANKS |
| | Hello, Im trying to write a program which is computing surface area of a 3D geometry by using Newell Methods. Geometry data should be reading from a text file. The lines which has 3 columns point out coordinates of geometry's vertices. The lines which has 2 columns point out connectivities … |
| | i want insert and retrieve image from the database using jsp i see many example but in every example gives default path like ("c:image.jpg") but i want to insert image using <s:file> tag in struts2.0 in database so plzz help me i have exam in few days and i want … |
| | i want to call there A's class constructor using "super" keyword how it is possible help me plz.....[code]class A {} class B extends A {} class C extends B { i want to call here A's class constructor using "super" keyword how it is possible help me plz..... } class …  |
| | `private static final Font FNT_GIVEN = new Font("SanSerif", Font.BOLD, 20);` I want to put the color for this font for example red, can someone help me??? I am working in awt. |
| | Hey guys, Here's my problem: I developed some code that converts binary to characters and characters to binary. At first all went well (by first I mean on the good ol' console), but when i tried implementing a GUI, some weird stuff came up. When I try converting characters (strings … |
| | Hello, I am having a problem putting this Array's output in a single GUI window. When I receive the output it just shows the grades in individual GUI windows (IE Erik 98 [OK], Fred 76 [OK], etc). If I put the output outside the loop then it doesn't recognize grade[i]. … |
 | Hi guys, I am in desperate need of help. I'm not exactly sure how to fix this or how to pass contentpanes correctly. Here is my code for gameboard.java: [CODE]import javax.swing.*; public class GameBoard implements ActionListener { private int[][] winSlots = new int[][] { {0, 1, 2}, {3, 4, 5}, … |
| | i have made a jsp page, in which:- 1) I HAVE CERTAIN TEXT FIELDS 2) AN OK BUTTON 3) A GENERATE BUTTON. The problem:- When i click on generate button, info from database should get filled in the textfields. How can i do this? |
| | hi everyone where did i go wrong with the {} please help. import javax.swing.JFrame; // import JFrame class import javax.swing.JLabel; // import JLabel class import javax.swing.JPanel; // import JPanel class import java.awt.Font; // import awt Font class import javax.swing.border.Border; // import Border interface import javax.swing.BorderFactory; // import BorderFactory class import … |
| | hello everyone! i need to create setup for my java swing desktop application. I have searched in google and found a software to create a setup file. it is called INNO SETUP. But i tried to use it and but no any succeess. please help me in this regard. please … |
| | I expected the program to update the original array but it seems to update the array that has been sorted. i tried to copy array but it does not seem to help me. how do i make sure sure that the array that is updated is the original array. Desired … |
| | Hello, I am currently trying to work on a project, however I will not ask for any sort of Coding since I want to implement that myself. I am working on a project in which I deal with various contracts and I have to [B]keep updating the total price of … |
| | Hi, I`ve just started working on my diploma thesis project which is "building a door access control system". Mainly it will work like this: there will be a java server, a database and clients(which will simulate the access cards at the doors) Since i don`t have the possibility to use … |
| | Hey there, I'm stuck in a rut at the moment trying to figure something out. I have a class, that has 4 methods. method1(), method2(), method3() and whatMethod()... whatMethod() accepts a String and then decides what method to execute based on the received String. Say the String that was sent … |
| | String ipAddress = new String (pktIn.getData(),0,pktIn.getLength()); what the mean of this sentence?? |
| | Hi..! i just started a new thread to draw attention. I asked earlier about how to make a trial period software in this forum and the link is.... [url]http://www.daniweb.com/software-development/java/threads/363496/1557768#post1557768[/url] i found the solution of using Rampart, but i have to purchase it to fully use it. Now can we use … |
| | Hi guys! i need some help with my program and i cant determine what to do next...i'm making a program that will output the longest word in a sentence.. here is my code... [CODE] import java.util.Scanner; class LongestWord4 { static Scanner console = new Scanner(System.in); public static void main(String args[]) … |
| | Hi! I need to know how to make global object from a local place like a function. And of course, they need to have unique names each time the function is run Could I somehow pass the a String parameter of the function to the name of the new object? … |
| | Dear All, Below is my java codes. Currently the codes gets data from gps devices. The problem now if you notice is that I have to send twice the acknowledgement message that is w.write("$PA\n"); w.flush(); once in line 56 and 57 and once more in 85 and 86 then only … |
 | I have this part of my code. I have a JLabel and a JButton that are in a panel. The I place that panel into another panel that has a border layout and I set the panel containing the label and button to be "NORTH", but the JLabel does not …  |
| | hi I'm writing a small game and need to pass an image into an ArrayList. The Image and bounds are set in Attacker Class with an ArrayList partially constructed in my GameScrn Class posted below. Have spent 2 days on this one issue and failing badly...guessing as usual, im missing … |
| | What purpose does the main method serve? What code should you, and should you not, put in the main method? Brief description of DIP , Factory method pattern and OCP in java terms. |
| | how to find out whether certain elements in an array are equal to one another? for this array: [icode]int array[] = {0, 1, 0, 0, 2, 0, 0, 3, 0, 1};[/icode] i wanna know if elements under the indexes 0, 1, and 9 are same numbers well the easy way … |
 | Hello, I make a program loop..but it doesn't work as i want ><" ! this is the OUTPUT -look careful, please- : [CODE]Welcome to our miniCalculator if you want to use add, enter add if you want to use subtraction, enter sub if you want to use division, enter div … |
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