Java J2EE Question and Answers

21. What are the types of J2EE modules?
 
  • Application client module
  • Web module
  • Enterprise JavaBeans module
  • Resource adapter module
 
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22. What is Java Secure Socket Extension (JSSE)?
  A set of packages that enables secure Internet communications.
 
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23. What is URI?
 
  • Uniform resource identifier. A globally unique identifier for an abstract or physical resource. A URL is a kind of URI that specifies the retrieval protocol (http or https for Web applications) and physical location of a resource (host name and host relative path).
  • A URN is another type of URI.
 
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24. What is Servlet?
  A java program that extends the functionality of a Web server, generating dynamic content and interacting with Web applications using a request response paradigm.
 
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