What is the difference between an interface and abstract class?

What is the difference between an interface and abstract class? Similarities You cannot instantiate them They may contain a mix of methods declared with or without an implementation Differences Interface abstract class All fields are automatically public, static, and...

Java EE Interceptors

Java EE Interceptors Technology to do method call intercept. Common uses of interceptors are logging, auditing, and profiling. Terminology target class – class in which Interceptors are defined. Interceptor methods are invoked in conjunction with the methods (of...

XML Schema Definition – XSD Introduction

XML Schema Definition – XSD Introduction An XML Schema: defines elements that can appear in a document defines attributes that can appear in a document defines which elements are child elements defines the order of child elements defines the number of child...