I am getting this null pointer error when i m installing subeclipse.
Also in log file this error i found.
unable to locate .myeclipse.properties file
Problems occurred when invoking code from plug-in: "org.eclipse.jface".
I need to create a code for this asign:
Write a program that computes the cost of painting and installing carpet in a room. Assume that the room has one door, two windows, and one bookshelf. Your program must do the following:a. Prompts the user to enter, in feet, the length, width, and height of a room.
A. Read the dimensions of the room.
b. Prompts the user to enter the width and heights, in feet, of the door, each window, and the bookshelf. Read these quantities.
c. Prompts the user to enter the cost, per square foot, of painting the walls. Read these quantities.
d. Prompts the user to enter of cost, per square foot, of installing carpet. Read these quantities.
e. Output the cost of painting the walls and installing the carpet.
Actually I use MyEclise to develop and deploy a enterprise project(EAR file). I use Java Build Path to add some other projects and link sources, and added several jar files (as external jar and user library) to my project. (I used J2EE technology and there are some default jar of course )
By myeclise deploying manager I deployed my project on weblogic base_domain and then by weblogic console I deploy it on weblogic. All is set and there is no problem in all steps.
Now I wanna to create EAR file manually, first I created WAR file which included some jsf files and web-inf directory contains classes, lib directories and some important file like web.xml , facec-config.xml and etc.
In classes folder I have .class files which build correctly from .java files, and on lib directory**I copied all jar file from web-inf/lib directory** which created automatically by myeclipse deploying manager on weblogic base domain folder.
I added this War file into EAR file along APP-INF directory which contains all jar files from APP-INF/lib directory on weblogic base domain folder and META-INF directory what contains application.xml file.
When I deploy this ear file on weblogic there is so many error and problems. What is the correct way to create that EAR file.
I have asked to make a desktop application to manage accounting detail of some construction company. So, I am thinking of making it using Swing. But till now i have always worked in making web applications in servlet, jsp, struts2 .. What are the steps to create swing application in MyEclipse.
View Replies View RelatedI compiled a java program and converted it to an exe file and it works fine on the computer I created the java file in but when i try it on another computer it gives me a "Java Virtual Machine Launcher - A Java Exception has occured" error message.
View Replies View RelatedI'm using jdk7 and I get this error when I compile Exception in thread "main" java.lang.Error: Unresolved compilation problem: at First.main(First.java:16)
Java Code:
import javax.io.*;
import javax.awt.*;
import javax.lang.*;
import javax.applet.*;
import javax.net.*;
import javax.util.*;
import javax.swing.JApplet;
import javax.swing.JFrame;
public class First extends JApplet {
public void init() {
getContentPane().add(new JLabel("Applet!"));
[code]....
I'm trying to run an enterprise java application running glasssfish server from my university ( the open university, distance learning and i recommend it). I get the following error:
pre-init:
init-private:
init-userdir:
init-user:
init-project:
do-init:
post-init:
init-check:
init:
[code]...
The Java EE server classpath is not correctly set up - server home directory is missing.Either open the project in the IDE and assign the server or setup the server classpath manually.For example like this: ant -Dj2ee.server.home=<app_server_installation_directory> BUILD FAILED (total time: 0 seconds)
The server was working normally but now I'm seeing these errors
Server Side:
java.lang.ClassNotFoundException : PacoteTradugo.Mensageiro
at java.net.URLClassLoader $ 1.run ( URLClassLoader.java : 372 )
at java.net.URLClassLoader $ 1.run ( URLClassLoader.java : 361 )
[Code].....
package Week_8;
import java.util.Scanner;
public class Task_1
{
public static void main(String[] args) {
Scanner kboard = new Scanner(System.in);
int customer_number;
String customer;
int items;
char category;
[Code] .....
This is a simple DFS question on spoj. click it here. i am getting nzec error on java. If possible,
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.Scanner;
import java.util.StringTokenizer;
[code]....
I am currently trying to split the string "EAM est" between the part. I have gotten the code to work if the was a -. But I can't see why the error is occuring
I have tried
String test = "EAM-testing";
String[] parts = test.split("-");
System.out.println("parts[0] = " + parts[0]);
System.out.println("parts[1] = " + parts[1]);
String test1 = "EAM esting";
String[] parts1= test1.split("");
[Code] .....
The error occurs at line: String[] parts1= test1.split("");
I have a JSP page that calls a Java method .. using GlassFish 4.0 it worked just fine, now I'm trying to run it on a new server with Tomcat 6.0 but it keeps giving me this error: "the function result must be used with a prefix when a default namespace is not specified"
Here's my JSP page:
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
......
<jsp:useBean id="diskUtilData" scope="request" class="newpackage.ResultPage" />
.....
<c:forEach var="celldata" items="${diskUtilData.result()}">
[Code].....
I am having trouble figuring out why java is giving me an error for the symbols. I will post the errors below the code.
Java Code: import java.util.Scanner;
public class ShelbyHarms_3_02 {
public static void main(String[] args) {
Scanner console = new Scanner(System.in);
[code]....
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 wrote this program:
class hellojava
{
public static void main(string[] args)
{
system.out.println("hello java");
}
}
Then i saved this file with name hellojava.java(notepad) in C drive in separate folder c:myjavaapp(not in c:java folder).
When I am compiling(with javac hellojava.java) it shows following error:
cannot find symbol public static void main(string[] args), and also says package system doesnot exists system.out.println("hello java");
This is my code.
public class PA9 {
public static void main(String[] args) throws FileNotFoundException {
// create data file to read from
File inf = new File("cityPopulationData.txt");
//Create a file to write out to.
PrintWriter fileOut = new PrintWriter("output.txt");
[Code] .....
This is my error
Exception in thread "main" java.util.InputMismatchException
at java.util.Scanner.throwFor(Scanner.java:909)
at java.util.Scanner.next(Scanner.java:1530)
at java.util.Scanner.nextInt(Scanner.java:2160)
at java.util.Scanner.nextInt(Scanner.java:2119)
at PA9.getData(PA9.java:35)
at PA9.main(PA9.java:22)
I am trying to uncover why I am getting an error message when trying to view a panoramic photo on my wordpress website.We are using the PTviewer plugin.This is the error message when you load the page: URL....I recently took over as webmaster for this site am not sure how the previous developer decided to set this up.Here is the raw code:
<div style='padding: 15px'><h2 style='font-size: 13pt; color: #DB592D; margin-left: 5px; margin-bottom: 5px; font-family: georgia;'>Spacious One & Two Bedroom Suites</h2><p style="">Stay & Play at Pacific Plaza and your stay will be filled with fun, excitement in a relaxing beach atmosphere.<p style="">Choose from our spacious one bedroom and two bedroom suites.
[code]....
I have an error using quicksort and this is a project ... The error occurs for numbers such as 7500 and bigger ...
Exception in thread "main" java.lang.StackOverflowError
at QuickSort.QuickSort(QuickSort.java:45)
at QuickSort.QuickSort(QuickSort.java:46)
at QuickSort.QuickSort(QuickSort.java:46) ...
Java Code:
import javax.swing.JOptionPane;
public class QuickSort{
public static void main(String[] args){
int p=new Integer(JOptionPane.showInputDialog("Jepni numrin e kufizave: "));
int[] ListaNumrave= new int[p];
//QuickSort Zbrites
[Code] .....
I've got a problem in Eclipse. The below code is a part of my program, used for (re)starting a new game. The 'public static int' statement gives the error 'This method must return a result of type int'..
public static int playAgain(){
boolean validInput = false;
do {
System.out.println("Would you like to play a game? Please answer 'yes' or 'no'.");
String playAgain = input.next();
[Code] ....
Write a Java program to read from the data file, find the city with the highest population based on the 2010 census data, the city with the highest population growth from 2010 to 2013, the city with the lowest population growth from 2010 to 2013, and the city with the highest density (number of persons per sq. mile).
import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Scanner;
[code]....
I have written this program but I am seeing error when I compile this program ( javac TestArithmetic.java).
1)TestArithmetic.java:26 cannot find symbol
2)symbol: class Arithmetic
3)location: class TestArithmetic
4) Arithmetic ar = new Arithmetic(x1,x2,x3);
1)TestArithmetic.java:26 cannot find symbol
2)symbol: class Arithmetic
3)location: class TestArithmetic
4) Arithmetic ar = new Arithmetic(x1,x2,x3);
2 errors.
Code :
import java.util.*;
class TestArithmetic {
public static void main (String[] args){
float number;
Scanner console= new Scanner (System.in);
System.out.println("Enter first number");
[Code] .....
I search this source code in google about library system then i run this in my JCreator then that error appear . I think that problem is all about "main". where can i put that main ?
View Replies View RelatedI am getting a compile error message when I am trying to compile someone else code using Eclipse. The partial code description is below as follows:
public String decrypt(String password) {
try {
// create the key and parameter spec
KeySpec keySpec = new PBEKeySpec(password.toCharArray(), salt, interactions);
SecretKey key = SecretKeyFactory.getInstance(keyFormat).generateSecret(keySpec);
AlgorithmParameterSpec paramSpec = new PBEParameterSpec(salt, interactions);
[Code] ....
Below is the following error message:
Access restriction: The type 'BASE64Decoder" is not API (restriction on required library '/usr/lib64/jvm/java-1.8.0-openjdk-1.8.0/jre/lib/rd.jar')
How do I troubleshoot it?
My dynamic web project has a java class that captures a session variable with the following code.
HttpSession LoginSession = request.getSession();
String VAR = LoginSession.getAttribute("myVar").toString(); //This is the row 127
If i test the app in local (Mac + Java 1.8 + Tomcat 8) all works. In my remote cloud server (Ubuntu 14.10 + Java 1.8 + Tomcat 8) all works, except this class, that has this code. I copy the complete error here. Note that the row 127 of the error message is the second row of the previous code; and, if i comment this row with // and assign a fix variable all works. So, the problem is that 127^ row.
14-Dec-2014 08:15:23.923 SEVERE [http-nio-8080-exec-14] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [srvNavigation.SrvPT] in context with path [/myapp] threw exception
java.lang.NullPointerException
at srvNavigation.SrvPT.doGet(SrvPT.java:127)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:618)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:725)
[Code] ....
How can i solve the problem?
I have written a sample java program, in which I have imported a package com.ibm.mq.
While compilation in as400 machine,I am getting an error like package com.ibm.mq not found.
I have set classpath and also run a hello world program.
I have uninstalled JAVA because I needed to download the 64-bit version but no matter WHAT I do I still get the same installation error message "keyset as registered in invalid" and I was downloading it from [URL] .... I will do whatever it takes to fix this!
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