Comments on Javarevisited: Difference between ClassNotFoundException vs NoClassDefFoundError in Java

howto resolve NoClassDefFoundError.

2022-04-05T10:00:15.221-07:00

howto resolve NoClassDefFoundError.

Hello @Unknown, it's just like setting another...

2020-06-03T23:56:54.564-07:00

Hello @Unknown, it's just like setting another environment variable, but if you need guidance, I have blogged about it earlier on how to set classpath in Java you can check that article.

How to set classpath plz tell me

2020-06-02T05:44:10.067-07:00

How to set classpath plz tell me

Your 3rd point is not much clear to me, So I tried...

2016-11-29T10:52:19.696-08:00

Your 3rd point is not much clear to me, So I tried one example with one of the custom class loader mention below :

CustomClassLoader cl=new CustomClassLoader(Test.class.getClassLoader());
Class test1=cl.loadClass("Palindrome");
System.out.println(test1.getClassLoader());

Class test2=Class.forName("

@Parvez - puting a wrong classname is just similar...

2015-05-08T08:38:53.753-07:00

@Parvez - puting a wrong classname is just similar to not having that class on the classpath

Isn't this statement "Both ClassNotFoundE...

2014-02-09T04:14:33.342-08:00

Isn't this statement "Both ClassNotFoundException and NoClassDefFoundError are related to java classpath." wrong? For e.g. if you try Class.forName by passing wrong name you get ClassNotFoundException and that nothing to do with classpath.

Thanks for providing such useful information...its...

2013-05-28T02:50:19.555-07:00

Thanks for providing such useful information...its working.

ClassNotFoundException means compiler not able to ...

2013-03-07T19:52:46.490-08:00

ClassNotFoundException means compiler not able to find specified .class file.
NoClassDefFoundError means compile not able to load .class file.
Both can happen because of wrong classpath set.

A NoClassDefFoundException is thrown if a class is...

2012-08-01T00:18:15.650-07:00

A NoClassDefFoundException is
thrown if a class is referenced with
Java’s “new” operator (i.e. static loading)
but the runtime system cannot find the
referenced class.

class MyClass {
public static void main(String args[]) {
Car c = new Car();
}
}

------------------------------
Class.forName (String className); //static method

I just encountered a use case in which one delegat...

2012-03-21T07:32:03.763-07:00

I just encountered a use case in which one delegates the other - Using custom ant task to compile my own code. very confusing.... in short: java.lang.NoClassDefFoundError: somePackage/someClass at java.lang.Class.forName0(Native Method)
...
Caused by: java.lang.ClassNotFoundException: somePackage/someClass

Good differences. I agree that both NoclassDefFoun...

2011-12-05T23:27:28.640-08:00

Good differences. I agree that both NoclassDefFoundError and ClassNotFoundException shares some natural similarity which doesn't exist and create confusion on java programmer's mind.

hi Anonymous, I will write when I have a good topi...

2011-08-13T18:22:11.218-07:00

hi Anonymous, I will write when I have a good topic to wrote about electronic trading system, currently I have written about FIX Protocol and you can check that.

I am encountering a weird situation. Class.forName...

2011-08-03T11:21:31.145-07:00

I am encountering a weird situation.
Class.forName("org.xyz.ValidationMessage") works

However in a method in class DataValidationException
public ValidationMessage .getValidationMsg()
{
return new ValidationMessage (...);
//args match
}

I get the error java.lang.NoClassDefFoundError:org.xyz.ValidationMessage

How is this