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CS407: Network Applications Development

Unit 4: Transporting Text Across a Network   By now, you know that you can receive input from users and generate outputs using a subset of streams on a local machine.  In this unit, you will learn how to create streams to receive input and write output.  You will focus on writer and reader stream classes, ultimately learning to open writing and reading streams across machines on a network.

Unit 4 Time Advisory
This unit should take you approximately 12 hours to complete.

☐    Subunit 4.1: 3 hours

☐    Subunit 4.2: 3 hours

☐    Subunit 4.3: 3 hours

☐    Subunit 4.4: 3 hours

Unit4 Learning Outcomes
Upon successful completion of this unit, the student will be able to:
- Explain the fundamental concepts of streaming in Java. - Differentiate the coding methods for writing and reading across machines. - Compare and contrast methods for input and output streaming. - Complete programming tasks utilizing different streaming methods.

4.1 Streams Overview   - Reading: Hobart and William Smith Colleges: David J. Eck's Introduction to Programming Using Java: “Chapter 11: Advance Input/Output Streams, Files, and Networking” Link: Hobart and William Smith Colleges: David J. Eck's Introduction to Programming Using Java: “Chapter 11: Advance Input/Output Streams, Files, and Networking” (PDF)
 
Instructions: Please read the introduction to Chapter 11.  Note the topics to be covered in the subunits that follow.  Explain the role of streams in networking.

 Terms of Use: The article above is released under a [Creative
Commons Attribution-Non-Commercial-Share-Alike License
3.0](http://creativecommons.org/licenses/by-nc-sa/3.0/).  It is
attributed to David Eck and the original version can be found
[here](http://math.hws.edu/javanotes/).

4.2 Stream Definition and Types   - Reading: Hobart and William Smith Colleges: David J. Eck's Introduction to Programming Using Java: “Section 11.1: Streams, Readers, and Writers” Link: Hobart and William Smith Colleges: David J. Eck's Introduction to Programming Using Java: “Section 11.1: Streams, Readers, and Writers”(PDF)
 
Instructions: Please read Section 11.1 in its entirety.  What types of data streams are covered in this section?

 Terms of Use: The article above is released under a [Creative
Commons Attribution-Non-Commercial-Share-Alike License
3.0](http://creativecommons.org/licenses/by-nc-sa/3.0/).  It is
attributed to David Eck and the original version can be found
[here](http://math.hws.edu/javanotes/).

4.3 Files   - Reading: Hobart and William Smith Colleges: David J. Eck's Introduction to Programming Using Java: “Section 11.2: Files” Link: Hobart and William Smith Colleges: David J. Eck's Introduction to Programming Using Java: “Section 11.2: Files” (PDF)
 
Instructions: Please read Section 11.2 in its entirety.  Compile and run the samples included.  Because files have to be protected for security, how is the data in a file processed?

 Terms of Use: The article above is released under a [Creative
Commons Attribution-Non-Commercial-Share-Alike License
3.0](http://creativecommons.org/licenses/by-nc-sa/3.0/).  It is
attributed to David Eck and the original version can be found
[here](http://math.hws.edu/javanotes/).

4.4 File Processing   - Reading: Hobart and William Smith Colleges: David J. Eck's Introduction to Programming Using Java: “Section 11.3: Programming with Files” Link: Hobart and William Smith Colleges: David J. Eck's Introduction to Programming Using Java: “Section 11.3: Programming with Files” (PDF)
 
Instructions: Please read all of Section 11.3, which provides a number of examples for processing files.  Compile and run the samples included. 

 Terms of Use: The article above is released under a [Creative
Commons Attribution-Non-Commercial-Share-Alike License
3.0](http://creativecommons.org/licenses/by-nc-sa/3.0/).  It is
attributed to David Eck and the original version can be found
[here](http://math.hws.edu/javanotes/).

4.5 Streaming Checkpoint   - Assessment: Hobart and William Smith Colleges: David J. Eck's Introduction to Programming Using Java: “Programming Exercises for Chapter 11” Link: Hobart and William Smith Colleges: David J. Eck's Introduction to Programming Using Java: “Programming Exercises for Chapter 11” (PDF)
 
Instructions: Please complete the exercises for subsections 11.1 through 11.3.  Each exercise identifies the subsection it is based on.  Review that subsection if you need more information before completing that exercise.  When you have finished, solutions are found at the link to the right of the question.
 
Terms of Use: The article above is released under a Creative Commons Attribution-Non-Commercial-Share-Alike License 3.0.  It is attributed to David Eck and the original version can be found here.