When one accesses the getExtensions() method of an abstract class that implements ExtensionAware a java.lang.NoSuchMethodError is thrown. The conditions for this to ...

Any java interface or abstract class can be marked as an extension point (implements ExtensionPoint interface). Extension is an implementation of an extension point. It's a java annotation on a class.

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Abstract: After utterly researching existing fingerprint classification algorithms, this article gives out a new definition of core and delta point, putting forward an improved algorithm based on the ...