How To Make Jar Of Project With JGrasp

May 12, 2014

I'm done with my project and I'm not trying to make it into a jar with JGrasp... I start by making a project then I click the option to make my project into a jar... Everything works but when I try to run it it says that the main class cannot be found... How can I fix this?

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How To Make Java Project A WAR File In NetBeans

May 10, 2014

I am suppose to submit my project as a WAR file but not sure how to do it.

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How To Make DJNative Swing Project Installer Using Exe4j

Mar 15, 2014

I want to make installler for my client application in swing using exe4j but after making installer using exe4j  When running the exe of application it gives me error as following
 
java.lang.NoClassDefFoundError: chrriis/dj/nativeswing/swtimpl/components/JFlashPlayer
    at java.lang.Class.getDeclaredMethods0(Native Method)
    at java.lang.Class.privateGetDeclaredMethods(Unknown Source)
    at java.lang.Class.getDeclaredMethod(Unknown Source)
    at com.exe4j.runtime.LauncherEngine.launch(Unknown Source)
    at com.exe4j.runtime.WinLauncher.main(Unknown Source)

[Code] ....
 
The source code of my project is as follows:

/* 
* See the file "readme.txt" for information on usage and redistribution of this file
* And for a DISCLAIMER OF ALL WARRANTIES.
*/

package flash;
 import java.awt.BorderLayout;
 import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
import chrriis.common.UIUtils;
import chrriis.dj.nativeswing.swtimpl.NativeInterface;
import chrriis.dj.nativeswing.swtimpl.components.JFlashPlayer;

[Code] ....

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Assembling Database Project From A Downloaded Project Zip File?

Apr 12, 2014

i downloaded a sample database code of an online payroll system. How can i assemble it to know how it works.
the files include php and mysql files. it is to build an online payroll system

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How To Return A String From Project Into Android Project

Jun 26, 2014

I tried many times to return a string from java project to an android project But it keeps sending incorrect values as in 2 as it should be 1 here is an example.

Java Project:

boolean somethingboolean = false;
if(something.equals("1")){
somethingboolean = true;
}
public static String getString(){
if(somethingboolean == true){

[Code]...

Android project:

System.out.println(JavaProject.getString())

and in the android project it prints "FALSE"

So what should i do?

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How User Enter Data Into JGrasp Without Using GUI

Oct 7, 2014

I'm currently taking a Java Programming module in college, the program we are using is jGrasp and I'm currently stuck on one aspect of the language.

I did VB last year and I enjoyed it and got good grades so I'm comfortable with Java in terms of compiling the code correctly and getting it to run with no errors.

But for a project we got yesterday, the user must be able to enter data (e.g. an answer) into jGrasp without using a GUI. This is the case because we won't be dealing with GUIs until next semester.

I'm able to handle the rest of the project, but the part which I can't figure out is how the user can interact with jGrasp without the aid of a GUI.

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JGRASP Won't Allow To Declare Variables As Strings

Oct 10, 2014

Java Code:

import java.util.Scanner;//Imports Scanner
public class operadoreslogicos//imports a public class {
public static void main (String [] args)//defines the state of a class {
Scanner input = new Scanner (System.in);//Inputs a scanner to read user
//keyboard
boolean cierto = true,// Declares variables as boolean and applies a value

[Code] .....

The word string is supposed to turn purple when I type it, but it just stays normal, so it doesn't declare hello and bye as variables.

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Getting Program To Repeat Itself In JGRASP Without Having To Click Run

Oct 10, 2014

Basically, I have want to keep typing numbers and pressing enter and the same program keeps repeating itself. This is the code I need to repeat,

import java.util.Scanner;
class Averagecalc2 {
public static void main(String args []) {
Scanner input = new Scanner(System.in);
double num,

[Code] .....

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File Paths In Eclipse / Jgrasp

May 1, 2014

So I downloaded jgrasp and eclipse on a new computer and am trying to figure out how their filing/path system works.In eclipse I created a new project under which I've imported all my files for my comp sci class, so they're all under this one project which is my only project. I attached a pic of what my eclipse workspace looks like. In this project folder is a file I'm trying to run.

I keep getting an error saying "editor" does not contain a main type.When I change my class name to the project folder I end up getting an option to run the program as an applet or an application, but either one I choose I get the same error message. In the bottom it gives me a warning saying

DescriptionResourcePathLocationType
Build path specifies execution environment CDC-1.1/Foundation-1.1. There are no JREs installed in the workspace that are strictly compatible with this environment. CS1050AssignmentsBuild pathJRE System Library Problem

I tried running the program in jgrasp and got this error

----jGRASP wedge2 error: command "javac" not found.
---- This command must be in the current working directory or
---- on the current system PATH or jGRASP PATH to use this function.
---- System + jGRASP PATH is "C:UsersQudrat.MommandiDocuments;C:Windowssystem32;C:Program Files (x86)InteliCLS Client;C:Progra

[code]...

I have the JDK installed in program files, I have the correct versions of eclipse and Jgrasp, and have uninstalled / reinstalled the JDK/Jgrasp/Eclipse so I don't know what the problem is?

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Compile Error When Running JGrasp

Feb 3, 2015

I keep getting the error Admit.java:10 cannot find symbol

import java.util.*;
public class Admit {
public static void main(String[] args) {
sayIntro();
Scanner console = new Scanner(System.in);
System.out.println("Information for applicant #1:");
getScore(console);
getGPA(console);

[Code] ....

The compiler then reads:

Admit.java:10: error: cannot find symbol
score1(ACTScore, SATScore, GPAScore);
^
symbol: variable ACTScore
location: class Admit
Admit.java:10: error: cannot find symbol

[Code] .....

10 errors

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JGrasp - Printf Left Justify?

Sep 6, 2014

We're learning printf with JGrasp as the environment at the moment. Heres the problem.

I have a string as this:

String header1 = new String ("Caswell Catering and Convention Service");

as for the printf line, its this:

System.out.printf ("%-5s/n", header 1);

The output is right justified no matter the use of the "-" or without and I can't seem to find the correct thing to do to make it left justified.

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How To Write A Program Using Quadratic Formula In JGrasp

Mar 4, 2015

Write a program named QuadraticTable.java that takes three double arguments and two int arguments (in that order) from the command line. The three doubles will represent a, b, and c from the quadratic formula.

If the discriminant is non-negative, find and print the solutions to the quadratic equation. (The plus/minus sign in the quadratic formula indicates that you would separately perform both operations). Otherwise print "no real solutions".

Then using the last two int arguments as x_min and x_max, print a table of x and ax

2 + bx + c

values using the a, b, and c read in as command line arguments.

Sample output: (command line arguments were 1 0 2 -3 3)

1x^2 + 0x + 2 has no real solutions.

X 1x^2 + 0x + 2

-3 11

-2 6

-1 2

0 2

1 3

2 6

3 11

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JGrasp - No Main Method / Applet Or IMDlet

Sep 30, 2014

I have been trying to get this code to work but in jGrasp it give the no main method, applet, or IMDlet. The assignment states: Design a class Message that models an e-mail message. A message has a recipient, a sender, and a message text. Support the following methods:

-A constructor that takes the sender and recipient
-A method append that appends a line of text to the message body a method toString that makes the message into one long string like this:

"From:Harry Morgan
To: Rudolf Reindeer. . ."

Write a program that uses this class to make a message and print it. package emailmodel;

import java.util.Scanner;
public class Message
{
private String senderemail;
private String receiveremail;

[code]....

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JGrasp - Writing A Program For Ticket Sales

Sep 13, 2014

The manager of a football stadium wants you to write a program that calculates the total ticket sales after each game. There are four types of tickets: box, sideline, premium, and general admission. After each game, the data is stored in a file in the following format:

ticketPrice numberOfTicketsSold

Sample data might look like:

250 5750

100 28000

50 35750

25 18750

The first line indicates that the box ticket price is $250 and that 5750 tickets were sold at that price.

Your program should input in this data (using Scanner or an input dialog box), then output that data to a message dialog box along with total ticket sales information. Output the total number of tickets sold and the total sale amount. Make your output user-friendly and "pretty". Format your output with two decimal places. Use JOptionPane and the formatting techniques learned in chapter 3 for your output. Example output might be:

5750 Box Tickets sold at $250.00
28000 Sideline Tickets sold at $100.00
35750 Premium Tickets sold at $50.00
18750 General Admission tickets sold at $25.00

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JGrasp - Errors In Writing A Program For Checking And Savings

Sep 19, 2014

Here is the objective of the assignment:

Quote : A bank in your town updates its customers' account at the end of each month. The bank offers two types of accounts: savings and checking. Every customer must maintain a minimum balance. If a customer's balance falls below the minimum, there is a service charge of $10 for savings accounts and $25 for checking accounts. If the balance at the end of the month is at least the minimum balance, the account receives interest as follows:

- Savings accounts receive 4% interest.

- Checking accounts with balances of up to $5000 more than the minimum balance receive 3% interest; otherwise, the interest is 5%.

Write a program that reads a customer's account number (integer), account type (character: s for savings or c for checking), minimum balance that the account should maintain, and the current balance. The program should then output the account number, account type, current balance, and an appropriate message.

Your program should only allow 'c', 'C', 's', or 'S' as valid input, any other character for the account type should result in an error message. Format your monetary output to two decimal places, and use constants for all the above constant values.

Sample output:
Please enter your account number (int), account type (char), minimum balance, and current balance:
46728 S 1000 2700
Account Number: 46728
Account Type: S
You have earned 0.04 interest on your account.
Current Balance: $2808.00

[Code] .....

Invalid account type!

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Make Shapes Besides Making Two Lines For X And Oval With White Smaller Oval Inside To Make O

May 8, 2014

We are making a tic tac toe game for my CS120 class and I am having trouble figuring out how to make our X's and O's. Is there a way to make shapes besides making two lines for an X and an oval with a white smaller oval inside to make an O? We have only learned the basics so far in class (i.e. events, inheritance, client-supplier, etc.)

These are our instructions:

Write a controller that controls the game. There is one human player (the X player) and the computer player (the O player). The name of the class must be TicTacToeController. In a sense, the controller is the game since the controller will 1) create a TicTacToeModel 2) create a TicTacToeView and 3) create a TicTacToeButton (you must write this class following the design pattern covered in class lectures), a label, and text field such that when the button is pushed, the player moves into the cell selected by the text field. After every player move, the computer moves into a randomly selected empty cell. When the game is over, a text message must be displayed somewhere on the screen the gives the status of the game. While you are free to change the appearance of the controller, the basic elements must be provided (a view of the game, a button, and a text field to enter the cell). A sample screenshot is displayed below.And this is the code i have thus far:

[import java.awt.*;
import javax.swing.JFrame;
public class TicTacToeView extends Rectangle
public TicTacToeView(int x, int y, int w, int h) {
super(50,60,w,h);
this.setBackground(Color.red);
JFrame win = new JFrame("Tic Tac Toe");
win.setBounds(10,10,w+100, h+100);
win.setLayout(null);
win.setVisible(true);
win.setBackground(Color.gray);

[code]....

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May 6, 2014

I'm doing a project and my code won't compile.

import javax.swing.*;
import java.awt.event.*;
public class BookStore extends JFrame{
private JPanel panel;
private JLabel question; //This will be where the question is.
private JTextField NumofBooks; //this is where the user will enter the number of books
private JButton OKButton,ClearButton,ExitButton; //Will give the user the points, cancel the points, and exit
private final int WINDOW_WIDTH = 310; //Need to make it visible
private final int WINDOW_HEIGHT = 100;

[code]....

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Nov 24, 2014

I am deploy my project in a machine and access it through VPN. In one page i am sending parameters array through hidden input field. When i access it in process page through request.getParameterValues it return null values, you can see it in attachment.This page work fine without VPN.

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Exporting Project In Eclipse?

Feb 10, 2015

i have programmed a game using JPanel and JFrame. My App is of this type (if this is relevant to the problem):

public class Main extends JPanel {
 private JFrame frame;
public static void main(String[] args) {
new Main();
} public Main() {
frame.setSize(WIDTH, HEIGHT);

[Code] ....

The problem is, When i export the file in eclipse as Runnable jar file,and run the exported file, it gives me a blank screen (white default) and nothing is running. Whereas, normal debugging of the game is working quite well.

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Apr 2, 2015

So I am working on a PostFix calculator that is used in command line for a class project, and I am having a little trouble on developing a memory for it. I have been told to create a hashMap and I have researched it and understand the basics of it. I have the calculating method working, but what I am having trouble trying to implement a way for the user to declare variables. For example this what the user should be able to do:

> a = 3 5 + 1 -
7
> bee = a 3 *
21
> a bee +
28

[code]....

I just need to be able to save the answers as a variable the User names, such as the example and let the user be able to use the variables later.

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Mar 5, 2015

So, I've been working on a school project for a couple days, and I have my code written out but I can't fix the compile-time errors. The prompt for it is here:

Write two programs: one using the String class and one using the StringBuffer class. Your programs should store a set of Strings in an ArrayList and print those Strings in the order by which they are added. The output of your programs should create a complete sentence.

I am stuck on the first program.Here's my code for the first program:

Java Code:

import java.util.ArrayList;

public class SentenceNormal {
public static void main(String args[]) {
String n1 = "My ";
String n2 = "favorite ";
String n3 = "football ";
String n4 = "team ";
String n5 = "is ";
String n6 = "the ";
String n7 = "Seahawks";

[code]....

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May 27, 2014

As a brand new with Java I've created a small "Hello world" program using eclipse.

I would like to create an exe file from this application. Therefore, I need the jar file.

I can't find such a file with that extension in the folder where I saved the java project.

How can I manage this file?

I know it is a very basic issue, but as I mentioned it is the first "Hello world" test...

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Sep 23, 2014

Hello World program. We had to build it. Write a basic Java program that will implement one class to store a state of a project. The class should have one property to store a textual name of the state. When a object of this class is created the initial state should be "Open".

1) Class should have one method next() which will move the project to the next step in the sequence: Open - In progress - Closed.If next method is called for a project in the Closed state it should do nothing.

2) Class should have a method close() which will move the project into the Closed state.

3) Class should have a method print() that will output a current state of the project.

Submit a java code file as your assignment. Do not hesitate to contact me if you have any troubles with the assignment.

I have been working on this thing for almost a week, and really don't have a clue on what to do. I know I have to use a string = open, and I know I have to create an object. I don't have a clue on how to do this. I have read the chapter so many times, I almost memorized it, but what he wants is nothing like our demo in the book. the Book used set and get, and utility scanner, but he doesn't want any of that. Just a basic code that will move from Open --- in progress --- closed.

The best I can tell what he wants is when I set the object to open it will display " project is open", then when I set it to " in progress" it will read project is "in progress". I don't have a clue what close is suppose to do, or the print method.

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Dec 7, 2014

I have make a simple grade average project and can't figure out how to ask the user if they want to enter more grades to average and run the app again.Here's what I have so far.

import java.util.Scanner;
public class Average {
private static Scanner kb;
public static void main(String[] args) {
kb = new Scanner(System.in);
 
[code]...

How many grades do you wish to average?

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Jul 8, 2014

i don't know how create that project ,

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Apr 20, 2014

I inherited a web application and am trying to build it. I recently installed JasperSoft Studio 5.5.0 final on my developer machine. I also have Eclipse Juno on my developer machine. I was advised by the previous developer to put some of his Jasper .jar files into my web app's lib folder. I did do this and now the localhost will not run, it is generating this error:

org.apache.jasper.JasperException: java.lang.NullPointerException
org.apache.jasper.servlet.JspServletWrapper.handleJspException(JspServletWrapper.java:502)
org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:430)
org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
javax.servlet.http.HttpServlet.service(HttpServlet.java:723)

I went out to the lib folder and saw these files:

jasperreports-5.1.2
jasperreports-applet-5.1.2
jasperreports-expressions-1.0.0
jasperreports-exprfunction-1.0.0
jasperreports-fonts-5.1.2
jasperreports-javaflow-5.1.2

The version on them would appear incorrect given my version of 5.5. I am new to Jasper Reports. I suppose I could google on the .jar files and get the ones that belong to the 5.5.0 final and put them into the directory to see if Apache Tomcat 6.0.39 likes that better. And then start the server. If it doesn't like them, I guess I could remove them and continue, but I would prefer to have the Jasper Reports up and running.

My second question about the Jasper Reports is how do you tell the IDE where the Reports are located?

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