Hello World tutorial

No idea why the Hello World application tutorial will not work in the windows command prompt. Application could build and run successfully in NetBeans IDE. I get the error message below copied when you type 'java HelloWorldApp. I made sure that I was in the same directory as the original java and the class file. Also follows the suggested solutions for error message "Exception in thread"main"java.lang.NoClassDefFoundError: HelloWorldApp", I tried to set a specific path and the path of class through environment variables, but nothing has changed.

Current settings (such as mentioned in NetBeans):
Product version: NetBeans IDE 7.1.1 (Build 201203012225)
Java: 1.7.0_03; Server 64 bit Java hotspot VM 22.1 - b02
System: Windows 7 version 6.1 running on amd64; Cp1252; en_US (nb)

Any ideas what could be the problem? Thank you.

Exception in thread "main" java.lang.NoClassDefFoundError: HelloWorldApp (false
name: helloworldapp/HelloWorldApp)
at java.lang.ClassLoader.defineClass1 (Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:791)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)
in java.net.URLClassLoader.access$ 100 (URLClassLoader.java:71)
in java.net.URLClassLoader$ 1.run(URLClassLoader.java:361)
in java.net.URLClassLoader$ 1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged (Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
to Sun.misc.Launcher$appclassloader$ AppClassLoader.loadClass (Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:476)

I see an exception message: ' fake name: helloworldapp/HelloWorldApp.

HelloWorldApp.class is located in a directory named "helloworldapp? If to check if it is a package in the java file. Packages must be compiled/executed outside the directory, including the directory name.

Tags: Java

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