Abstract Method Error

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java.lang.AbstractMethodError is thrown when an application tries to call an abstract method. Normally, this error is caught by the compiler; this error can only occur at run time if the definition of some class has incompatibly changed since the currently executing method was last compiled.

Seems like this problem is due to version incompatibility in some of the jar file. I can not figure it from your code. Please check this thread.

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