Running Java Application - Analyze Traffic Condition

Jun 18, 2014

I have a java application which uses Google Maps to analyze the traffic condition. But sometimes it can be run and work properly, sometimes not. On some computers on which there is installed java, the program can be run, and on some, again with installed java (jre), exactly the same version, the program can not be run. For example the application first run well on my desktop computer, connected in a LAN, and then stopped working well when run. But when I use laptop which uses the WiFi and run the same computer using VMWare, if I connect to the desktop on which the program can not be run, on the laptop the same program can be run well, in the same room, but using the Wifi.

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Running Database Inside Java Application

Jul 1, 2014

I have to store data I've pulled from the web i wanted to do this by storing it in a database but after looking at some tutorials i'm not sure if its possible as the databases don't seem to run with the application but instead run as an independent entity.if its possible to have a database in the java application so it runs when the application runs.

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Swing/AWT/SWT :: Running Application Using Java 1.6 And Windows-based X Server

Apr 15, 2011

At our company we run a third-party Java-based GUI application on one of our Linux server machine, displaying the application to our local Windows work stations using the Cygwin X Server.We noticed a few problems with a new version of this application and was able to narrow it down to the following conditions:

1. Java Swing application running on a UNIX host;
2. Java used is 1.6 (problem not noticed when using Java 1.5)
3. Displaying to Cygwin X server (I've heard other windows-based X servers have the same issue, but I don't have access to any others at this time).

If we run the application natively on Windows, I'm told if the application runs on the Linux host and displays natively to that machine's display there are no problems (although I'm not able to verify this myself).The problems are:

1. Any new frame/dialog is opened in the geographic center of the dual displays, rather than in the middle of one or the other;
2. Any attempt to drag the window to a different location on the display seems to work, but as soon as you let go of the drag, the window snaps back to the original location. This only happens the first time you try to move each window.
3. Drop-down controls (JComboBox, for example) just close back up as soon as you click on them. If you click and drag the mouse to attempt to make a selection, no selection can be made.

Are these known problems using 1.6 on UNIX displaying to Windows-based X Servers?

The only real problem is number 3. I expect that if I put more work into the window placement, I should be able to get past number 1. Number 2 is just a minor annoyance.The following is a simple Java Swing application which when run in the correct environment will exhibit the problems.

import java.awt.EventQueue;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

[code]....

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Running Hello World Application

Apr 1, 2014

I have a problem with running my hello world aplication. Here is the code.

public class HelloWorld {
public static void mаin(String[] args) {
System.out.println("Hello world!");
}
}

It compiles fine. But I get an exception when I try to run it.Here is the error message I'm getting:

Exception in thread "main" java.lang.NoSuchMethodException: HelloWorld.main([Ljava.lang.String;)
at java.lang.Class.getMethod(Class.java:1605)
at com.intellij.rt.execution.application.AppMain.main(AppMain.java:113)

Process finished with exit code 1

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Web Services :: Exception While Running Web Application

Apr 15, 2015

I am integrating Struts hibernate tiles and spring configuration project. While running give me exception as

Apr 15, 2015 7:16:10 PM org.apache.catalina.core.AprLifecycleListener init
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:Program FilesJavajre1.8.0_40in;C:WindowsSunJavain;C:Windowssystem32;C:Windows;C:/Program Files/Java/jre1.8.0_40/bin/server;C:/Program Files/Java/jre1.8.0_40/bin;C:/Program Files/Java/jre1.8.0_40/lib/amd64;C:ProgramDataOracleJavajavapath;C:Program Files (x86)NVIDIA CorporationPhysXCommon;C:Program Files (x86)InteliCLS Client;C:Program FilesInteliCLS Client;C:Windowssystem32;C:Windows;C:WindowsSystem32Wbem;C:WindowsSystem32WindowsPowerShellv1.0;C:Program FilesMySQLMySQL Server

[code]....

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EJB / EE :: Timer Service Is Still Running Even Undeploy The Application?

Jun 22, 2012

I'm facing some problem in my EJB setup. I have deployed the ejb setup and it was working fine.

The working conditions are:

1. The timer service is working when i hitted the servlet after starting the server. It must not work when i close the servlet window,but in my case it is still working(timer is performing its opeartion) even i closed the servlet page.

2. When i stopped the server, the timer not gets invoked.

I uninstalled the EJB application, but still the timer service is running.

I'm using WAS 7 server.

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Running Encryption / Decryption Application - Could Not Find Main Class

Jun 23, 2014

I am trying to put together an encryption/decryption application that will essentially accept a sentence that is submitted, and spit out the encrypted version and then switch it back to the correct sentence. I have been told to nest my information in the class (rather than the main), but am having difficulty actually understanding how to do this. The error that Eclipse is throwing me is also that it "could not find the main class." Here is my code:

import java.util.Arrays;
import java.util.Random;
public class encryptingWords {
public static void main(String[] args) {
final int ALPHASIZE = 26;
final char[] Lalpha =

[Code] .....

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Array Setup - Analyze By Adding Up Contents Of Each Column

Feb 16, 2015

I've setup an array that I would like to analyze by adding up the contents of each column, however, the out of bounds exception pops up when I try to execute the program. I know the book usually expresses this operation the other way around, where the row is the argument of the first for statement, but I've set my array up where I need to add each row before moving to the next column.

vowelCounter is a 5x3 array.

// Display the line which had the most number of vowels

public static int maxVowelSentence() {
int max = 0, sum = 0;
int sentence = 1;
for (int row = 0; row < vowelCounter.length; row++) {
max = vowelCounter[row][0];

[Code] ....

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String Analyze - Take A Sentence And Check How Many Times Specific Words Come Up

Sep 8, 2014

Basically the requirements are to take a sentence (string of text) and check to see how many times specific words come up and then add to the counter depending on the word.

But I can not seem to get it to add the instances of the goodwords and badwords.

package Strings;
import java.io.*;
public class SentimentAnalyser {
private static String analyse(String text) {
int pw = 0;
int nw = 0;
String[] searchword = { "bad", "terrible", "good", "awesome" };

[Code] ....

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Error While Running In Command Prompt Only - In Eclipse Running Fine

May 19, 2014

This is my program: RemoteXMLRead.java

import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.DocumentBuilder;
import org.apache.commons.io.filefilter.WildcardFileFilte r;
import org.w3c.dom.Document;
import org.w3c.dom.NodeList;
import org.w3c.dom.Node;
import org.w3c.dom.Element;
import java.io.File;

[code]....

It is working fine when i run in Eclipse, but is giving error when i run in cmd.. What i need to do to over come this..

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EJB / EE :: Convert Standalone Java Thread Application Into Web Application In Tomcat

Nov 17, 2014

convert or move standalone java thread application into Tomcat server container for accessing its JNDI services? Also is it possible to schedule this thread application in Tomcat server? is it possible to keep this app in tomcat as web application and schedule in window's scheduler.

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Front End For Air Traffic Control Simulation?

Apr 1, 2014

I'm a student designing and developing an Air Traffic Control (ATC) system for incoming aircraft, mainly implementing the part which handles the queuing system for approaching aircraft.

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Traffic Light Simulation Using Multithreading

Feb 2, 2015

I am writing a simple program to simulate a traffic light. What I want is to make them glow after each 1 second, one by one. For example: Firstly Red, then after 10 seconds, red will be put to off and yellow will start glowing and then accordingly green. This process shall continue incessantly (Just for experimental purpose). I have some arrangement done but could not figure out how to put them together in run() method of Runnable interface. I know how interthread communication works. But could not find any logic in this case when three threads will run together.

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class TrafficLight extends JFrame implements Runnable
{
JButton red, green, yellow ;
TrafficLight()

[Code] .....

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JSP :: Would Template Based Framework Generates A Lot Of Request Traffic?

Nov 29, 2014

If I have a web page with a lot of data to show, say a lot of tables and graphics, would using non JSP based frameworks result in a lot more individual AJAX requests? For example if the page have 5 tables, with JSP the whole page will be returned to the browser with data for all 5 tables already. But if this is a pure HTML / Javascript based view, then we need to have each of the 5 tables to make individual AJAX requests in order to render the page. Is this indeed the down side for not using JSP?

The reason I'm asking is because I'm considering moving away from JSP to a template based framework such as Thymeleaf or Freemarker.

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Swing/AWT/SWT :: Traffic Simulation - Applet Not Initialized Error

Mar 25, 2006

I have a traffic simulation code that is producing a start:applet not initialized error each time i run it. This is the code

import java.io.InputStream;
import java.net.URL;
import java.util.*;
import java.awt.*;
import java.applet.Applet;
import java.lang.Thread;
class Node {

[Code] ....

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Swing/AWT/SWT :: Program That Record And Rerun Network Traffic

Sep 21, 2014

I have a program that records and reruns network traffic. It was developed in C and runs in my case under Windows 7 Professional but will run almost anywhere. I have observed a lack of stability.

First I have a JAVA stand alone GUI program that runs the program as follows:

g11_bttn_start_script_capture.addSelectionListener(new SelectionAdapter() {
@Override
public void widgetSelected(SelectionEvent e) {

URI uri = null;
URL url = null;
String tempstr = "";
tempstr = "-s " + g11_txt_PATH_portnumber.getText() + " " + g11_txt_scriptname.getText() + ".both";

[Code] ....

Basically it launches the executable t3drive, hangs arounf so it gets a chance to start, and then connect to it via the embedded browser.

It frequently works, sometimes launches in the browser but then freezes, and sometimes fails to start at all.

t3drive works 100% of the time if I run it under cygwin and I can reliably connect to it using any browser.

Why this might not be stable? Just looking for a direction of what to try next.

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Running Programs Through Java

Mar 30, 2014

I've been playing around with this for about an hour.

Java Code:

Runtime runTime = Runtime.getRuntime();
try {
Process process = runTime.exec("notepad");
} catch (IOException e) {
e.printStackTrace();
} mh_sh_highlight_all('java');
So that works. Notepad will open.

However, I'm trying to get other programs to open. Specifically, this program: C:Octave3.2.4_gcc-4.4.0inoctave-3.2.4.exe...However, using that in place of notepad doesn't work. I'm assuming that there is some sort of system variable that explains why simply typing "notepad" works? As if you type notepad into the run box, notepad will open. Soo does that snippet work by going through some sort of system variables?How would I go about opening other programs, such as the one I referenced above.

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Running Java File From Linux CMD

Apr 24, 2014

import acm.util.* ;
import acm.program.*;
import java.awt.* ;
class Chap6_ex1 extends ConsoleProgram {
public void run() {
println("This program displays a randomly schosen card.");
int number = rgen.nextInt(1 ,13);
int suit = rgen.nextInt(1 ,4);

[Code] ....

I am running the this from a Linux command line , in the cmd first i use :

javac -classpath acm.jar Chap6_ex1.java

end then :

java -cp .:acm.jar Chap6_ex1

The output i m getting after second command is :

Exception in thread "main" acm.util.ErrorException: Cannot determine the main class.
at acm.program.Program.main(Program.java:1358)

I know the problem is from the RandomGenerator class in packet acm.util.* but i dont know how to fix the problem . Every other program has worked . What I am missing or how this whole issue of packet importing works when running a java file from cmd ?

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Running Java App With SQLite On Ubuntu

Nov 12, 2014

I have built a Java app that uses SQLite (sqlite-jdbc-3.8.7.jar). Running the jar file on windows works as expected however, trying to run it on Ubuntu Server 14.04 has turned into quite a task!

I put together a brand new machine in VirtualBox for testing. I installed Java (sudo apt-get install default-jre) and have installed SQLite (sudo apt-get install cl-sql-sqlite3 sqlitebrowser). I created a new sub-directory within my home directory and copied over the jar file. From terminal, I then run the command: sudo java -jar ProductionView.jar and I receive a java.lang.unsatisfiedlinkerror. For troubleshooting, within the app, before making a connection to the db, I have printed out the location of where the db is to be created and it is correct (see attached pic). Is there more that needs to be configured before I can run this app on Ubuntu? I have posted the relevant code below :

(AppDatabasePath() is what is printed in the image...).

public static String AppDatabasePath() {
return AppPath() + APP_NAME + ".db";
}
public static String AppDatabase() {
return "jdbc:sqlite:" + AppDatabasePath();

[Code] .....

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Running Java Program As Executable

Apr 16, 2015

I have tried to get my dinky little program I wrote to be stored as an executable through Eclipse to no avail. It seems I have tried everything else as well, to no avail. I do not want it to go through command prompt, but rather have it be its own entity. As you can probably tell my knowledge of Java and coding is limited, but always willing to expand.

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Running Java At The Command Line?

Mar 27, 2014

I am just learning Java and I am have a problem running programs at the command line. I have the following code:

package java_help;
import java.io.IOException;
class help {

[Code].....

I can run this program in net beans were I originally wrote the program and it runs fine there. I also compile the program at the command line using javac but when I go to run this program I get a error message that it cant find main.

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Running Java From Command Line

Mar 10, 2014

i have windows 7. cmd.exe told me it couldn't recognize javac.i have a JDK installed though...

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Running Java Program Without Jdk Installed

Jan 25, 2014

I want to know is there any way to run java program without installing jdk.

I want to run my code on system which dnt have jdk installed on it. is it possible??

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Running Java Programs From Command Prompt

Dec 17, 2011

My PC runs on Windows XP. When I try to run a java program (written using NetBeans) from the command prompt, the program opens in NotePad but does not run.This is what I have been typing at the command prompt:

C:javahellosrchelloHello.java

The above is the correct path to the Java file on my PC.how to run the program from the command prompt or perhaps link me to a tutorial that explains it?

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EJB / EE :: Long Running Task Processing In Java

Feb 18, 2014

I want to develop a Java EE application for the following scenario.

Webapp takes a file from a user and analyze the file. This analysis could take hours. User should be able to check if the analysis is finished via AJAX. When the analysis is finished user should be able to view the analysis report that has been generated by the analyzer.

I checked what are the possibles ways I could achieve this but couldn't get a clear idea. I heard about JMS, Work Manager API and servlet asynchronous processing. But still not sure what to use and how to use.I'm not very much familiar with EJB.

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Running C Compiled Executable File In Java

Jul 10, 2014

I'm trying to run a command line executable file using java but there is no output. On the task manager a conhost process opens when the application is run. I've tried

1)try {
Runtime.getRuntime().exec("D: est.exe");
} catch (Exception e) {
e.printStackTrace();
}

2)String[] cmd = { "D: est.exe"};
Process p = Runtime.getRuntime().exec(cmd);
p.waitFor();

and

3)//Runtime.getRuntime().exec("D: est.exe", null, new File("D:"));

same thing happens i.e. nothing happens.

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