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Understanding Decision Structures and Software Development Life Cycle in Java Programming

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In today's lesson, we will explore the fundamental concepts of Decision Structures in Java and the Software Development Life Cycle (SDLC). We'll begin by reviewing the SDLC phases: user requirements, planning and design, implementation, testing, and maintenance. The class will engage in an in-class exercise where you will write a Java program that prompts the user for a temperature value and determines if it is "cold." Additionally, we'll discuss testing and the importance it holds in software development. Complete today's activities to gain insight and earn a bonus mark by fixing a minor design flaw.

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Understanding Decision Structures and Software Development Life Cycle in Java Programming

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Presentation Transcript

  1. Decision Structure in Java Teacher: Mr. Ho

  2. Agenda • Review: Software Development Life Cycle • Decision Structure in Java • Work Period: • In-Class Exercise • Bonus Question

  3. What is Software Development Life Cycle?

  4. Software Development Life Cycle User Requirements Planning & Design Implementation in Java Testing Maintenance

  5. Decision Structure in Java

  6. User Requirements • Write a computer program that: • Asks the user for a temperature value (in oC) • Outputs that it is cold if the temperature is less than 5oC

  7. Planning & Design  IPO Input Processing Output temperature temperature < 5 “cold”

  8. Planning & Design  Flowchart Start Prompt & ask for temperature (in oC) temperature < 5 YES Output “cold” No End

  9. Implementation in Java • See BlueJ files

  10. Testing • What is testing? • Why do we need to do testing?

  11. Testing – Test Plan Test Cases: Does our program work correctly?

  12. Maintenance • Write descriptive comments in the Java code

  13. Questions & Answers ?

  14. In-Class Activities • Go to the course web page at http://computerNHSS.wikispaces.com • Download today’s lesson and “2 – In-Class Activity on Decision Structure.docx” • Work on the In-Class Activity: • Follow the software development life cycle (i.e., planning & design, implementation, test plan, and maintenance) • If you are finished, let Mr. Ho know. • Bonus: • The temperature program in today’s lesson has a minor design flaw. Identify it and fix it. Then, you will get a bonus mark.

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