Error - Could Not Find Or Load Main Class GameTester

Oct 29, 2014

I was trying to write my own version of the game SimpleDotCom from Head First Java. I have two files:

Game.java:
package project_01;
public class Game{
byte hitCount = 0;
String result = "miss";
int counter = 0;
String checkGuess(int[] location,int userGuess){

[Code] .....

The two files are in the same directory, "project_01" and the CLASSPATH environment variable is set to ".;".
The game compiled but when I tried launching it with "java GameTester" it returned the error : Could not find or load main class GameTester. I know my game is horrible and probably extremely buggy but I'll fix all the bugs, etc. later, right now I just need to get it to run.

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Sep 13, 2014

I have a problem that happens randomly where i try to compile and it just comes up with error

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Sep 30, 2014

I'm trying to run a java program from cmd. I'm using Windows 8, java version "1.8_0_20". I've got two classes, the main class called Middleware and a secondary class, called WorkerThread, of which the main class is using functions. I've successfully compiled both .java files with javac, and created the .class file. So all files are in the same folder. However, when I attempt to run the main class with java Middleware, I get the error message: "Error: Could not find or load main class". Here's the main class:

package middleware;
import java.net.*;
import java.util.concurrent.*;
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[code]....

My code compiles and runs fine in eclipse but on the console, I'm having troubles.

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Sep 2, 2014

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C:jdk1.8.0_20in;C:ProgramDataOracleJavajavapath;C:Program Files (x86)NVIDIA CorporationPhysXCommon;C:Program Files (x86)InteliCLS Client;C:Program FilesInteliCLS Client;%SystemRoot%system32;%SystemRoot%;%SystemRoot%System32Wbem;%SYSTEMROOT%System32WindowsPowerSh

[Code] ....

Here's my output.

09/01/2014 10:23 PM 634 Welcome.class
09/01/2014 10:21 PM 422 Welcome.java
14 File(s) 126,243,703 bytes
9 Dir(s) 53,942,079,488 bytes free

[Code] .....

It looks like the version command gives me what it should, so it appears I've got java setup right, but I"m stuck on the error I'm getting :

C:jdk1.8.0_20>javac -version
javac 1.8.0_20
C:jdk1.8.0_20>

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Code:

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Nov 19, 2014

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Sep 23, 2014

I tried running my program on cmd but it produces the error "could not find or load main class" ...It compiles well but it just doesn't run. Here is my code:

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import java.io.IOException;
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[Code] ....

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package in.javadigest.encryption;
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import java.io.FileOutputStream;
import java.io.IOException;
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[Code] ....

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Feb 25, 2014

I've just started, so right now I'm reading about declaring enums, the book lists the following code

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[Code] .....

I'm assuming that code to be in a same file since enums can be declared within and outside a class, so I saved it into a file named "Coffee.java", it compiles just fine from command line but when I try to execute "java Coffee" it throws "Error: Could not find or load main class Coffee"...

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Nov 10, 2013

When I try to run Java from the Windows DOS command line, I'm running into trouble:
 
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Exception in thread "main" java.lang.NoClassDefFoundError: MyApp1 (wrong name: myapp1/MyApp1)
 
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Jan 7, 2014

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import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.image.*;
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I am going to remove the BookPackage folder to see if bookpkg.jar file really works as a replacement for the BookPackage directory structure.

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/development_directory
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I have tried this with 2 different classes and it works fine? Why that error is appearing.

Code:

package score;
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[Code] .....

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import javax.swing.*;
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[Code] ....

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[Code] .....

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package day1.example;

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/**
* @param args
*/
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When i saved it,it shows no error.when i run it then a pop-up says "could not find the main class.the program will exit" and in the console it says---

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at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(Unknown Source)
at java.security.SecureClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.defineClass(Unknown Source)
at java.net.URLClassLoader.access$000(Unknown Source)

[Code] ......

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Jun 23, 2014

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import java.util.Arrays;
import java.util.Random;
public class encryptingWords {
public static void main(String[] args) {
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[Code] .....

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Dec 18, 2014

I am suddenly facing error messages when launching my eclipse. Below are the eclipse logs:

!SESSION 2014-12-18 15:17:46.415 -----------------------------------------------
eclipse.buildId=M20130204-1200
java.version=1.8.0_25
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_IN
Command-line arguments: -os win32 -ws win32 -arch x86_64
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[Code] ....

I have tried downloading and placing org.eclipse.swt-3.1.jar in the plugins folder of my eclipse and also I tried editing eclipse.ini file with below lines

openFile
-vm
C:Program Files (x86)Javajre1.8.0_25injavaw.exe
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Mar 13, 2014

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public void runMethod(String packageFilePath, String className){
try{
URI fileURI = new URI("file:/src/uk/learningAid/UserInputs/");
URL url = fileURI.toURL();
URL[] urls = new URL[]{url};

[code]....

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Nov 21, 2014

I am trying to create a custom tag, but I am getting the error message:

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/Users/s.m/Documents/com/tutorialspoint/HelloTag.java
package com.tutorialspoint;
import javax.servlet.jsp.tagext.*;
import javax.servlet.jsp.*;
import java.io.*;
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[Code] ....

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Apr 2, 2010

Currently my application is on Tomcat5.0.16.I use struts1.2, jstl 1.1 , jsp-api 2.0.I tried to migrate my application from tomcat5.0 to tomcat 6.0.26.I didn't see any issue in deployment but when i tried to access jsp pages i got this exception.

HTTP Status 500 -

type Exception report

message

description The server encountered an internal error () that prevented it from fulfilling this request.

exception

org.apache.jasper.JasperException: /pbuilder/login/legacyLogin.jsp(6,4) Failed to load or instantiate TagLibraryValidator class: org.apache.taglibs.standard.tlv.JstlCoreTLV
org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:40)
org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:407)
org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:88)
org.apache.jasper.compiler.Parser.processIncludeDirective(Parser.java:297)

[code]....

i found that jstl1.1 jar didn't have the above mentioned class.I replaced jstl1.1 with jstl1.2 jar.i verified that jstl1.2 jar had JstlCoreTLV calss.but even after this replacement of jar i am facing the same issue.

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