java - "Could not find the main class" -



java - "Could not find the main class" -

i'm trying run sample java application command promopt i'm getting next error:

exception in thread "main" java.lang.noclassdeffounderror: com/badlogic/gdx/helloworld/helloworlddesktop caused by: java.lang.classnotfoundexception: com.badlogic.gdx.helloworld.helloworlddesktop @ java.net.urlclassloader$1.run(urlclassloader.java:202) @ java.security.accesscontroller.doprivileged(native method) @ java.net.urlclassloader.findclass(urlclassloader.java:190) @ java.lang.classloader.loadclass(classloader.java:306) @ sun.misc.launcher$appclassloader.loadclass(launcher.java:301) @ java.lang.classloader.loadclass(classloader.java:247) not find main class: com.badlogic.gdx.helloworld.helloworlddesktop. programme exit.

the command i'm using seek , run app is:

java -cp .;gdx.jar;gdx-backend-jogl.jar com.badlogic.gdx.helloworld.helloworlddesktop

where relevant files in current working directory (.java, .class , .jar files)

the command used build .class files follows (there 2 .java files):

javac -cp gdx.jar;gdx-backend-jogl.jar helloworld.java helloworlddesktop.java

again run same working directory - contents of helloworlddesktop.java (more or less):

package com.badlogic.gdx.helloworld; public class helloworlddesktop { public static void main (string[] argv) { // application } }

i'm attempting larn java c# developer, wheras have strong background in programming concepts whole java toolchain confusing me. exception indicates class helloworlddesktop couldn't found, far can tell i've got right name , i've added right .jar files class path , java should able load class.

why can't find helloworlddesktop?

right - problem you've got helloworlddesktop.class in current directory, whereas should in com/badlogic/gdx/helloworld

you can prepare javac command - utilize -d . tell treat "." bundle root directory output.

normally want also organize source code package, "hello world" test may not worth it.

java classpath classnotfoundexception

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