NoClassDefFoundError

From WikiJava

java.lang.NoClassDefFoundError <class-name> occurs when the classloader doesn't find a subclass of <class-name>

Don't be confused with ClassNotFoundException, which occurs when <class-name> isn't found by the classloader.

To solve it, check the hierarchy of <class-name> and add the missing jars

Example

WARN [EJBDeployer] Verify failed; continuing java.lang.NoClassDefFoundError: es/caib/pfunciona/data/educacio/document/CertificatFppPdf ... at java.lang.Thread.run(Thread.java:595)

public class CertificatFppPdf extends MyPDF  { .. }
 
public class MyPDF implements PdfPageEvent { .. }

In this case NoClassDefFoundError occured because it was missing the jar containing the PdfPageEvent class.

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