So I am creating a game in Java, the game works fine when I run it in Eclipse but when I export it it does not draw anything on the screen.
I added a try and catch for nullpointerexceptions but the game does not throw any nullpointerexceptions.
What is the problem?
The game seems to be finding all the images & resources since it does not throw any NullPointerExceptions...
I have a JSP and Java program which will read data from Excel and add them dynamically to create table.My requirement is i should able to edit the columns what ever the data that was fetched from Excel and export those contents to another excel file.This should happen on clicking a button, i mean to exporting the contents of the table.
View Replies View RelatedBelow is my first servlet program:
FirstServlet.java:
package edu.aspire;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.Servlet;
import javax.servlet.ServletConfig;
[Code] .....
web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" id="WebApp_ID" version="2.5">
[Code] ....
Deployement:
To deploy my project into %TOMCAT_HOME%webapps folder.
Right click on Project ->Export-> War File
Project Name: Hello
Destination: D:Program FilesApache Software FoundationTomcat 6.0webappsHello.war
Result found in web browser:
HTTP Status 404 - /Hello/first
And Hello.war file is not found in webapps folder too after exporting as .war.
I am using Apache tomcat 6.0.37, eclipse 3.7.2 release, tomcat plugin :com.sysdeo.eclipse.tomcat_3.3.0
I'm trying to make a simple battleship game, but when I make a ship with the addShip method (it is suppoused to initialize the board with the numbers 1,2,3 or 4 depending on the ship type, at the given coordinates) it dosen't initialize the field with any numbers, although the method returns true. The place the ship is suppoused to be made stays initialized with ".",
package battleship;
public class Sea {
private int width;
private int height;
private String[][] field;
[code].....
I can't figure out this problem that I'm having in my Pong game. It's compiling fine, except when I run it, it gives me an overflow error.
Here's the code:
// Pong
import javax.swing.JFrame;
import java.awt.Color;
import java.awt.Graphics;
public class Pong extends JFrame {
private static final int WIDTH = 400;
private static final int HEIGHT = 400;
[Code] .....
Here's the error:
java.lang.StackOverflowError
at sun.awt.AppContext.get(AppContext.java:604)
at com.sun.java.swing.SwingUtilities3.getDelegateRepa intManager(SwingUtilities3.java:120)
at javax.swing.RepaintManager.getDelegate(RepaintMana ger.java:1625)
at javax.swing.RepaintManager.addDirtyRegion(RepaintM anager.java:445)
The error keeps going for a lot of more lines.
The line that gets highlighted is the first bracket of the Pong constructor.
I'm trying to fix this logic error in my slot machine game where no matter what slot combo comes up, it says you have won $10 and proceeds to add that amount to the balance and subtract the bet amount to the balance, even though it is not a winning combo! I've been trying to solve that and when doing so, I commented out Slot1.randNum1 == 0, Slot2.randNum2 ==0, and Slot3.randNum3 ==0 and anything relating to see if that was the problem, and it seemed like it was, because after that, the logic error described above was gone, but in doing so, the loss/win counter didn't increment, nor did the program pick up on the winning combos. However, I do not know why commenting out anything relating to randNum ==0 would cause that.
Here is the code for the processing (as you can see, some parts are commented in attempt to fix the logic error, but right now the code below is for the logic error that keeps on telling that the user has won):
public void askData ()
{
title ();
int betAmount;
while (true)
{
try
{
c.setCursor (3, 1);
[code]....
import java.util.Scanner;
import java.util.Arrays;
public class LotteryTester {
public static void main(String[] args) {
LotteryApplication lottery = new LotteryApplication();
int lotteryNumbersCount = lottery.getLotteryNumbers().length;
[Code] ....
Everything works fine but when I run it the matching numbers tends to be off. For example I will type Enter in 1,1,1,1,1 for my 5 numbers. The lottery numbers will be 5,3,4,5,8 and it will say 1 number matched.
I'm having some difficulty getting this GUI dice game to compile. I'm using javac and notepad++ for this and I'm getting the following errors:
DiceGame.java:34: error: cannot find symbol
die2label = new JLabel();
^
symbol: variable die2label
location: class DiceGame
[Code] ....
4 errors
My code is as follows:
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import javax.swing.*;
import javax.swing.event.*;
public class DiceGame extends JFrame
[Code] ....
I'm sure the problem is something trivial, but I guess that's all part of the learning process that I have to go through.
I wrote a program that would play a game of Hangman. It plays the game but it keeps on bringing up a exception error. This is my class code
import java.util.ArrayList;
class Assignment2Q4
{
private final ArrayList<Character> guessList = new ArrayList<>();
private final char[] charArray;
private final String secretWord;
private int guesses;
[Code] ....
This is the output that is given:
Enter the secret word:
pizza
Guess a letter:
d
?????
Guess a letter:
[Code] .....
Also when I guess the first letter of the word correctly it stops the program without going further on with the guessing.
Like for ex. P????
how to export a full jsf page to PDF. In my jsf page, I have a button to export to PDF and some fields where I am retrieving the values from a database. The form is ready but I don't know how to program code or program a button to export the page to PDF. I tried to search for an easy and a standard way but unfortunately I didn't find any useful example or code.
View Replies View RelatedHow to export a full jsf page to PDF. In my jsf page, I have a button to export to PDF and some fields where I am retrieving the values from a database. The form is ready but I don't know how to program code or program a button to export the page to PDF.
View Replies View RelatedI create a snake game. Ant this game have more than 1 class. So i need this thing export to jar.. So i have question:
1.Do i have insert to public static void main(String[]args) method to somewhere class?
2.How to export to jar with more than 1 class..
And again, if I must insert main method in somewhere class, so which class?
snakeCanvas.java :
import java.awt.Event;
import java.awt.Point;
import javax.swing.event.*;
import java.awt.*;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.image.BufferedImage;
[Code] .....
My app uses docx4J, XStream, and also uses an image on the start page. I placed all of this external libraries in Java Buid Path and in Eclipse it all works well but when I export all data to runnable jar file it doesn't work.
View Replies View RelatedI'm doing a project in JSP and Oracle..Here in my project there are two types of department.. Accounts and Sales.. Accounts department is able to download some pages to Excel format and it is working properly.. now in the sales they have to download in pdf format.. then only it is possible to send to the HO..now what they are doing is downloading the JSP page in excel format and converting to pdf manually using the Acrobat Printer.. is that possible to change to pdf format.. for converting to excel format.. i'm just using 2 linesand it is here
<%@ page language="java" session="true" import="java.sql.*" import="java.lang.*" contentType="application/vnd.ms-excel" %><%response.setHeader("Content Disposition","attachment; filename=test.xls");%>
in the filename side i chaged to test.pdf.. and in the contentType i changed to Acrobat readerand it is downloading but cannot view the content
I'm making an import/export of xml - I have the import of xml sorted I'm just trying to finish off the export. My export class is called XmlWriter.java. Inside the class I have an updateFile method to update an xml file as such:
public void updateFile(Environment environment,Document doc)
{
// code
}
I then in my main method have
public static void main(String argv[]){
//declare new object of class
XmlWriter xmlWriter = new XmlWriter();
//test testUpdate method
// xmlWriter.testUpdate();
Environment environment = ;
[code]....
I don't know what to make my variables equal to - eclipse keeps trying to use null but obviously that won't work. The Environment is another class that just contains getters and setters for the 3 different databases (that are in the xml file) and the getter/setter for the environment ID (also in xml file).
I am trying to export a DB record to an excel sheet. Below is the code which I tried. I am not getting any error but still only the first record of the table is getting inserted into the excel sheet. But when I try printing, I prints all the records. Below is the code I did to insert records.
for (int i=0;i<ColumnCount;i++) {
System.out.println("Inside for");
Label label=new Label(i,0,rsmd.getColumnName(i+1),cellFormat);
sheet.addCell(label);
WritableCell cell = sheet.getWritableCell(i+1, 0);
System.out.println("Column " + rsmd.getColumnName(i+1)+ " inserted");
cell.setCellFormat(cellFormat);
[code]....
I hope i am making a logical mi stake in the for loop. But still i am unable to locate that.
I have a library that I'm writing, the library contains a spring xml configuration file (lets say it's called libraryContext.xml) that sets the library up correctly for runtime, it also includes a test spring xml file that sets the library up for test by importing libraryContext.xml and overriding certain dependency injection beans (the library basically connects to a real database under normal conditions and uses dummy DAO's under test conditions). That bit is all fine.
The thing is, when I build the jar for the library (lets say it's called library-0.1.jar), the jar does not seem to contain the libraryContext.xml and that means that I can't import library.xml into my applications context.xml.
Basically, I have this line in my applications context.xml
Java Code: <import resource = "classpath:libraryContext.xml"/> mh_sh_highlight_all('java');
Unsurprisingly, since the xml file is not contained in the library-0.1.jar, the error I get is,
Java Code:
Offending resource: class path resource [applicationContext.xml];
nested exception is org.springframework.beans.factory.BeanDefinitionStoreException:
IOException parsing XML document from class path resource [libraryContext.xml];
nested exception is java.io.FileNotFoundException: class path resource [libraryContext.xml] cannot be opened because it does not exist mh_sh_highlight_all('java');
With respect to potential solutions to the above problem, I could:
1) physically copy the libraryContext.xml file (and its other *.xml and *.properties dependencies) into the application, but then I'd have to maintain duplicate files - I don't like this option.
2) find out if there is a better way to handle this problem from people who know better. E.g. is there a way to embed the libraryContext.xml file (and it's dependencies) into the jar file so that it can then be imported into the application. I've spent a while on google trying to figure this out and haven't come up with anything overly useful (perhaps I've been using the wrong search parameters).
As of now am using icefaces 1.8.2 provided tags for downloading data into excel sheet where i can download all the data from a data table. But now the requirement is like need to download the data into excel sheet based on values passed from UI as parameters to the action class method.
Attaching the code snippet along with this post.
CustomerList.xhtml :-
<table width="100%" cellpadding="0" cellspacing="0" border="0">
<tr>
<td>
<ice:outputLabel value="Export:" />
[Code] ....
I'm trying to export a runnable jar file that requires lwjgl. Everything works in eclipse as I'm using
-Djava.library.path=nativewindows
as a VM Argument for the jinput .dll files.
After exporting & launching the jar it doesn't work of course! I get this error:
java.lang.UnsatisfiedLinkError: no junput-dx8 in java.library.path
I'm not sure how to make it work outside of eclipse....
I am trying to export Solaris Display on Linux and trying to launch JNLP.
I am trying to follow the instruction mention in the following URL.
[URL] .....
I would like use the property mentioned in the above article in JNLP file on client side .
I did following nothing is working.
1. <argument>awt.toolkit=sun.awt.motif.MToolkit </argument>
2. <property name="awt.toolkit" value="sun.awt.motif.MToolkit"/>
3. java-vm-args="-Dawt.toolkit=sun.awt.motif.MToolkit"
4. export AWT_TOOLKIT=MToolkit
How do i check JNLP client is using it?
Recently we got an issue about file download. We are using below code to fetch the data from backend(DB2) and export to excel.
Before Jan 15 it use to take 2 minutes to download the file (2 MB size). But now its taking half an hour to download.
response.setContentType("application/vnd.ms-excel");
response.setHeader("content-disposition","attachment; filename=Attendance_Report.xls");
We have restarted server, system but still problem exists. We found that there is no code level or data base level or network level issues.
Now we have to see server level issue. What are the factors which effects the file downloading at server level.
We are using websphere 6.1 ,java1.4
I am new to java, i can develop basic java programs but am not really good at it. How should i pursue and how should i start. I know the game rules.Do i need to learn swings for the same?
View Replies View Relatedi can develop basic java programs but am not really good at it.I have been given this assignment of developing UNO game in java and have been given 10 days. How should i pursue and how should i start.I know the game rules.Do i need to learn swings for the same?
View Replies View RelatedI am creating a simple tiled minecraft like game in java, but i dont know how to make the game loop.Here is the source:
package net.pltformgame.main;
import java.awt.Color;
import java.awt.Graphics;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import javax.swing.JFrame;
public class main extends JFrame implements KeyListener {
[code]...
I really dont know how i make the jump or the game loop.
I'm building this custom project in stages, and I'm having difficulty getting the health of the player and the enemy to change. Upon compiling, I'll select weapon 1, then choose action 1 (basic attack), and the health of both the player and the enemy will stay at 15 and 10.There are no errors when compiling.
import java.util.Scanner;
public class CustomProject
{
public static void main(String[]args) {
Scanner sc = new Scanner(System.in);
it hp = 0;
int potionsleft = 0;
int choice1 = 0;
int weapon = 0;
int enemy1hp = 10;
//int newenemy1hp = 0;
[code]....
I'm working on a Java matching game and I'm having a hard time wrapping my mind around it. What I'm having trouble with is how exactly to create an array so that my squares have random values. Then how do I get it to reveal and compare those values by clicking on two of them? Here is what I have so far:
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
[code]....