ClassCircularityError in Java

Class ClassCircularityError in Java

ClassCircularityError is thrown from a program when a class extends to the same class or an interface extends to the same interface. This is a very rare scenario but can happen. The major reason to get this error is to have multiple versions of the same class present in the package structure(library). When JVM loads the class it can detect the circularity and throws the error.

In short, this error signals that a circular dependency or reference has been detected while performing initialization for a class.

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The structure of ClassCircularityError is given below:

public class java.lang.ClassCircularityError extends java.lang.LinkageError{
//constructor
public ClassCircularityError();
//constructs an empty ClassCircularityError object that is an object with no message specified.
public ClassCircularityError(String message);
//constructs an ClassCircularityError object with the message specified.
}

The class ClassCircularityError also inherits methods from Object and Throwable class:

From Object classFrom Throwable class
clone()fillInStackTrace()
getClass()getMessage()
notify()printStackTrace()
wait()printStackTrace(PrintWriter)
wait(long, int)getLocalizedMessage()
wait(long)printStackTrace(PrintStream)
equals(Object)
toString()
finalize()
hashCode()
notifyAll()

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