CODEWITHSUNDEEP
classnetbeansclassnotfoundexception
adesh
adesh

Reputation: 852

Class not found error in Netbeans

I am using Netbeans from many days. But suddenly it started giving me following errors for simple hello programs.

 java.lang.NoClassDefFoundError: newr
 Caused by: java.lang.ClassNotFoundException: newr
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
Exception in thread "main" Java Result: 1 
BUILD SUCCESSFUL (total time: 3 seconds)

here it is

My prog is simple hello program

public class newr {
public static void main(String argv[]){
    System.out.println("hello");
}
}

It happens very very oftentimes with me. I had tried to uninstall and again install it but this doesn't resolve my problem. I also tried to delete .netbeans folder that contain net bean's cache. But i have to delete this .netbeans folder every times it gives me such errors. Is there any way to permanently fix the error? I am tired of deleting the cache and uninstalling netbeans please help me....

Upvotes: 4

Views: 14258

Answers (2)

brahmdevpandey
brahmdevpandey

Reputation: 1

Deleting the cache of NetBeans solves the problem. To automate this task, you can manually write a script which would first delete the cache folder and then start NetBeans. You can also make this script executable and use it as the shortcut for starting NetBeans. You can Google the process of making your script executable, depending on your Operating System.

Upvotes: 0

user453441
user453441

Reputation: 1146

Deleting NetBeans's cache worked for me (version 7.2).

Find the cache folder (In help->about), close NetBeans, navigate to the folder, and delete the index folder. Reopen NetBeans, clean and rebuild, and it should find all the classes this time.

Upvotes: 10

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