Could Not Load Main Class Error
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Could Not Find Or Load Main Class Error
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Could Not Find Or Load Main Class Error In Java Cmd
is a community of 4.7 million programmers, just like you, helping each other. Join them; it only takes a minute: Sign up What does “Could not find or load main class” mean? up vote error could not load main class eclipse 365 down vote favorite 124 A common problem that new Java developers experience is that their programs fail to run with the error message: Could not find or load main class ... What does this mean, what causes it, and how should you fix it? java class main share|improve this question edited May 18 '14 at 17:34 gturri 4,73951937 asked Aug 7 '13 at 3:02 Stephen C 386k44409736 4 error could not find or load main class jar Please note that this is a "self-answer" question that is intended to be a generic reference Q&A for new Java users. I could not find an existing Q&A that covers this adequately (IMO). –Stephen C Aug 7 '13 at 3:21 this happened to me recently and it was due to a broken referenced library. I added an answer just in case it happens to someone else. –Eduardo Dennis Nov 1 '13 at 18:05 link <-- do you mind helping me? I tried debugging but to no avail. –Linify Jul 16 '14 at 3:45 2 Is your class under a package? if yes, see my answer –Razavi Oct 27 '14 at 12:09 2 In my case the answer was to add -jar –Nakilon Dec 15 '14 at 11:48 | show 1 more comment 24 Answers 24 active oldest votes up vote 396 down vote accepted The java
or load main class in Java [Solved] Error: Could not find or load main class HelloWorld comes when you are trying to run your Java program using java command with the main class as HelloWorld but Java is not able to find the
Error Could Not Find Or Load Main Class Minecraft
class. In order to solve this error, you must know how Java find and error could not find or load main class command prompt loads the classes, that's a little bit complex topic for beginners, but we will touch the same base here. For the curious reader,
Error Could Not Find Or Load Main Class Netbeans
I would suggest reading my post How Classpath works in Java, a must read for a beginner. For now, you just remember that there is an environment variable called CLASSPATH which includes directories where Java looks for http://stackoverflow.com/questions/18093928/what-does-could-not-find-or-load-main-class-mean all class files and if it doesn't find your main class there then it throws "Error: Could not find or load main class XXX", where XXX is the name of your main class. Since many Java programmer is now started programming using Eclipse they face this issue when they first try to run their Java program from command line. In Eclipse, it's easy to compile and run the program because Eclipse takes care of all http://javarevisited.blogspot.com/2015/04/error-could-not-find-or-load-main-class-helloworld-java.html Classpath setup, but when you run your Java program from command line, CLASSPATH environment variable comes in picture. Personally, I don't like this environment variable and doesn't define in my environment variable, because its confusing and source of so many classpath related issue. Instead, I use -cp or -classpath option with java command to run my program. This way you always know which JARs are included in your classpath. For beginners, another important thing to understand is the difference between PATH and CLASSPATH, you must know that PATH is used locate system executable, commands or .exe, .dll files (in Windows) and .so files (in Linux). It is also used to locate native libraries used by your Java program. While, CLASSPATH is used to locate the class file or JAR files. It's Java class loader who looked into CLASSPATH for loading classes. Coming back to the problem in hand, if you are a beginner in Java, who are able to run the program from Eclipse but getting "Error: Could not find or load main class HelloWorld" when trying to run the same program from the command line then follow the steps given here to solve it. Solving Error: Could not find or load main class HelloWorld Unfortunately beginner's book like Head First Java, which many developers used to learn Java, doesn't teach y
Google. Het beschrijft hoe wij gegevens gebruiken en welke opties je hebt. Je moet dit vandaag nog doen. Navigatie overslaan NLUploadenInloggenZoeken Laden... Kies je taal. Sluiten Meer informatie View this message in English Je gebruikt YouTube in https://www.youtube.com/watch?v=6jXXZQv6lcM het Nederlands. Je kunt deze voorkeur hieronder wijzigen. Learn more You're viewing YouTube in Dutch. You can change this preference below. Sluiten Ja, nieuwe versie behouden Ongedaan maken Sluiten Deze video is niet beschikbaar. WeergavewachtrijWachtrijWeergavewachtrijWachtrij Alles verwijderenOntkoppelen https://bbs.archlinux.org/viewtopic.php?id=187463 Laden... Weergavewachtrij Wachtrij __count__/__total__ How To fix could not find or load main class problem in java learnAsABeginner AbonnerenGeabonneerdAfmelden33 Laden... Laden... Bezig... Toevoegen aan Wil je hier later nog een keer naar kijken? Log in om deze video could not toe te voegen aan een afspeellijst. Inloggen Delen Meer Rapporteren Wil je een melding indienen over de video? Log in om ongepaste content te melden. Inloggen Statistieken 8.041 weergaven 5 Vind je dit een leuke video? Log in om je mening te geven. Inloggen 6 17 Vind je dit geen leuke video? Log in om je mening te geven. Inloggen 18 Laden... Laden... Laden... Beoordelingen zijn beschikbaar wanneer de video is verhuurd. Deze functie is load main class momenteel niet beschikbaar. Probeer het later opnieuw. Gepubliceerd op 28 mei 2016i am sure this video will help you to execute your program on cmd Categorie Mensen & blogs Licentie Standaard YouTube-licentie Meer weergeven Minder weergeven Laden... Autoplay Wanneer autoplay is ingeschakeld, wordt een aanbevolen video automatisch als volgende afgespeeld. Volgende Setting Path and Classpath for Java in Windows 7 - Duur: 6:01. Softlect 17.158 weergaven 6:01 Error Could not find or load main class - Duur: 7:42. Teach-the-World InfoData 653 weergaven 7:42 HOW TO FIX COULD NOT OPEN OR LOAD MAIN CLASS IN JAVA - Duur: 1:29. RASTOR SCALE 28.183 weergaven 1:29 Could not find or load main class - Duur: 2:16. iSee iLearn 46.329 weergaven 2:16 How to Fix the Error could not find or load main class info.mineshafter.GameStarter - Duur: 3:04. Safaa Al-Hayali 7.109 weergaven 3:04 How to Fix "Could not find main class: GUI" On RSPS [HD] - Duur: 6:39. Minescraft Wonders 8.116 weergaven 6:39 How To Compile And Run A Java Source File With Javac On Command Prompt (cmd) - Duur: 9:06. tportguides 35.957 weergaven 9:06 How to execute java program using Command prompt - Duur: 7:09. Java Dukes 64.774 weergaven 7:09 Debugging in Eclipse Java for Complete Beginners - Duur: 15:37. JAVA62 54.983 weergaven 15:37 How to compile your java file's or fix Java Error's! - Duu
Marcel- Member From: Utrecht, NL Registered: 2006-12-03 Posts: 259 [SOLVED] Java could not find or load main class I just tried to run a Java program using Swing components from the terminal, but I always get this error message:$ java VisualTest Error: Could not find or load main class VisualTestThe strange thing is that it runs flawlessly from within Eclipse.I created VisualTest.java using the (old) Visual Editor, it's contents are:package visual1; import javax.swing.SwingUtilities; //import java.awt.BorderLayout; import javax.swing.JPanel; import javax.swing.JFrame; public class VisualTest extends JFrame { private static final long serialVersionUID = 1L; private JPanel jContentPane = null; /** * @param args */ public static void main(String[] args) { // TODO Auto-generated method stub SwingUtilities.invokeLater(new Runnable() { public void run() { VisualTest thisClass = new VisualTest(); thisClass.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); thisClass.setVisible(true); } }); } /** * This is the default constructor */ public VisualTest() { super(); initialize(); } /** * This method initializes this * * @return void */ private void initialize() { this.setSize(300, 200); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); this.setContentPane(getJContentPane()); this.setTitle("JFrame"); } /** * This method initializes jContentPane * * @return javax.swing.JPanel */ private JPanel getJContentPane() { if (jContentPane == null) { jContentPane = new JPanel(); jContentPane.setLayout(null); } return jContentPane; } }As you can see, there is a class named VisualTest and it contains a main function.My CLASSPATH variable contains a dot, like.:/home/mk/.java/deployment/ext/*I just updated my Java from JDK 7u67 to JDK 8u20 (the Oracle one, in AUR), but I can't imagine this is related (however, I haven't run Java programs from the terminal for a long time).Strangely enough, a simple HelloWorld.javapublic class HelloWorld { public static void main(String[] args) { System.out.println("Hello World!"); } }runs flawlessly from within the terminal. Last edited by Marcel- (2014-09-26 12:44:35) Offline #2 2014-09-24 15:07:25 ewaller Administrator From: Pasadena, CA Registered: 2009-07-13 Posts: 13,444 Re: [SOLVED] Java could not find or load main class What directory are you in? Eclipse does not store the compiled stuff in the same directory as the source. When you compile by hand from the cli, by default, the compiled output gets placed in the same directory. Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael FaradayYou assume peopl