IT-145 uses programming as a problem-solving technique in business and engineering applications. SNHU says students write code in a logical, structured and organized way and learn to incorporate the key concepts of object orientation.
They also learn to write, review and document interactive applications, and to work with Software Development Kits (SDKs) and Integrated Development Environment (IDE) tools. The prerequisite is one of CS-110 or IT-140. IT-145 in turn is the prerequisite for IT-209.
Course at a Glance
| Item | Details |
|---|---|
| University | Southern New Hampshire University (SNHU) |
| Code | IT-145 |
| Credits | 3 |
| Level | Undergraduate |
| Prerequisite | One of CS-110 or IT-140 |
| Leads to | IT-209 Introduction to Robotics |
What IT-145 Covers
| Topic | What it means |
|---|---|
| Programming as problem solving | Turning a business or engineering need into code |
| Structured, organized code | Readable layout, meaningful names, logical flow |
| Object orientation | Classes, objects, encapsulation, inheritance, polymorphism |
| Documentation and review | Comments, explanations and checking others' code |
| Interactive applications | Programs that respond to user input |
| SDKs and IDEs | The tools used to build and debug software |
The catalog does not name the language, so follow your course materials.
Key Concepts Explained
Classes and Objects
A class defines data and behavior; an object is one instance. Grouping them models real things in the problem.
Illustration (invented): A BankAccount class holds a balance and offers deposit and withdraw methods. withdraw checks that the balance is enough before reducing it. Keeping the balance private means other code can only change it through those checked methods.
Encapsulation, Inheritance and Polymorphism
Encapsulation hides internal data behind methods. Inheritance lets a class reuse another's features. Polymorphism lets different classes respond to the same method call in their own way.
Documentation
Comments should explain why a decision was made, not repeat the code. A short header comment on each class and function is usually enough.
Typical Assignments and How to Approach Them
SNHU does not list assessments in the catalog; this is a general guide.
| Work type | What it tests | How to approach it |
|---|---|---|
| Programming tasks | Correct, structured code | Plan classes before coding |
| Interactive applications | User input handling | Validate input and test unusual values |
| Code review or explanation | Reading and documenting code | Comment on logic, naming and risks |
| Tool use | IDE and SDK skills | Learn debugging and breakpoints |
Designing Before Coding
Object-oriented programs are easier to write when the classes are decided first.
- Underline the nouns in the problem statement; they suggest classes.
- For each class, list the data it holds and the actions it performs.
- Decide which data should be private and what checks each method needs.
- Write a small test program that creates objects and calls the methods.
- Add comments and documentation as you finish each class.
Reviewing and Documenting Code
The catalog says students learn to write, review and document applications. Reviewing means reading code critically.
| Review question | What a good answer shows |
|---|---|
| Is the purpose clear? | Names and comments explain what and why |
| Is it structured? | Short methods, one job each |
| Does it handle bad input? | Checks and sensible messages |
| Can it be tested? | Logic separate from input and output |
Use the same questions on your own work before submitting. It is a quick way to catch the problems rubrics usually penalize.
Self-Check Questions
| Question | Short answer |
|---|---|
| What is encapsulation? | Keeping data private and exposing it through methods |
| What is inheritance? | A class reusing the features of another |
| Why document code? | So others (and you later) can understand and maintain it |
| What does an IDE offer? | Editing, running, debugging and project tools in one place |
Answer each with a short example from a program you have written.
Worked Example: A Small Class Design
Imagine a task to model a library item. Begin with the data: a title, a creator and whether the item is on loan. Then the actions: borrow, return and show details.
The class keeps the loan status private. The borrow method checks that the item is available before changing the status and returns a message if it is not. The return method sets it back. A short test program creates two items, borrows one twice and prints the results so you can see the check working.
In the documentation, explain why the status is private and what each method guarantees. This invented example shows how encapsulation protects data and why reviewers like clear explanations alongside code.
Where Students Get Stuck
- Too much in one class. Give each class a single purpose.
- Skipping design. A sketch of classes saves time.
- Weak input checks. Users will enter unexpected data.
- Thin documentation. Rubrics usually assess it.
Study Tips for IT-145
- Revise IT-140 or CS-110 fundamentals first.
- Learn the IDE debugger early.
- Re-implement each lecture example with a different scenario.
- Read code written by others to improve your own style.
How We Help with IT-145
Send the task, your code and error messages. A tutor can explain object-oriented ideas, review your code for structure and documentation, or provide a custom solution to a similar exercise.
GradeEssays is independent of Southern New Hampshire University. Use our work for study and submit your own code under SNHU's academic integrity policy.
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Frequently Asked Questions
One of CS-110 or IT-140.
3.
It is the prerequisite for IT-209.
Yes, the description names key object-oriented concepts.
The catalog says only that students work with SDKs and IDEs; follow your course materials.
No. We help you understand and debug your own work; you submit your own code.