Explain the term naming packages in details, JAVA Programming

Assignment Help:

Explain the term Naming Packages in details?

As you saw previously name space conflicts arise if two pieces of code declare the similar name. Java remains track of what belongs to each package internally. Therefore if Sun decides to put a Website class in java.lang in Java 2.0, it won't conflict along with a Website class described in an http package. Since they're in different packages Java can tell them apart. Just as you tell John Smith apart from John Jones through their last names, so too does Java tell two Website classes apart through their package names.

Therefore this scheme breaks down if two different classes share the same package name as well as class name. In a world in that several different packages can be downloaded from many different sites, all landing in the user's CLASSPATH, it's not unthinkable in which two different people might write packages known as http with a class called Website.

To ensure that package names don't conflict along with each other, Sun asks that you prefix all your packages with a reversed domain name. Therefore if your domain name is poly.edu, your package names should starts along with edu.poly. Within that domain you are responsible for making sure in which no one else writes a package that conflicts with yours.

This is primarily of interest to applet writers, not applet users. If you're surfing the net and you load one applet from MIT in which has a http.Website class and another from Polytechnic that has a various http.Website class, Java can still tell them apart since before it runs any package it downloads off the net it prefixes everything along with the site from which it got it. Instead it sees edu.poly.www.http.Website and edu.mit.www.http.Website. It's only while you download a package manually and install it in one directory in your CLASSPATH and install another package elsewhere in your CLASSPATH in which real name conflicts can arise if packages aren't carefully prefixed with a domain or email address.


Related Discussions:- Explain the term naming packages in details

Luminous jewels, Luminous Jewels - The Polishing Game Byteland county is v...

Luminous Jewels - The Polishing Game Byteland county is very famous for luminous jewels. Luminous jewels are used in making beautiful necklaces. A necklace consists of various lum

Translate four row solitaires from java swing to android, Translate Four Ro...

Translate Four Row Solitaires from Java Swing to Android. Project Description: There is a product known Four Row Solitaire listed in GitHub. I would like Swing GUI to be repl

Servlet pages from being cached by the browser, How do I prevent the output...

How do I prevent the output of my JSP or Servlet pages from being cached by the browser? Ans) You will require to set the appropriate HTTP header attributes to stop the dynamic

Project on image processing, Project Description: Computer vision and Im...

Project Description: Computer vision and Image processing project to extract book title Skills required: Java, C Programming

For in statement, It is a distinct type of loop, used to iterate through th...

It is a distinct type of loop, used to iterate through the properties of an object or the elements of an array. For instance assume the following statement that loops through th

Explain about the interpreter in java, Machines should have Java interprete...

Machines should have Java interpreter for the Java byte code to get implemented. Linking is a very simple process and this feature helps while developing applications. Java compile

Object-based programming, JavaScript is an extremely powerful object-based ...

JavaScript is an extremely powerful object-based (or prototype-based) language. It is not a full-blown OOP (Object-Oriented Programming) language, like Java, however it is an objec

Difference between stringbuffer and string class, Define the difference be...

Define the difference between StringBuffer and String class?

Catch clause should be used to handle the exception, How does a try statem...

How does a try statement determine which catch clause should be used to handle the exception?

Probability, Mike sells on the average 15 newspapers per week (Monday – Fri...

Mike sells on the average 15 newspapers per week (Monday – Friday). Find the probability that 2.1 In a given week he will sell all the newspapers [7] 2.2 In a given day he will se

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd