Mata Kuliah PBO Pertemuan Ke-6

Summary

The video focuses on the fundamentals of object-oriented programming, emphasizing key concepts such as encapsulation, inheritance, and class usage. The speaker demonstrates how to implement methods like `setHarga` and `getHarga` for managing product prices, explaining their role in controlling access to variables. Students are reminded to apply these concepts in their assignments, which must be text-based and object-oriented (no GUI). The speaker also mentions the upcoming mid-term exam and presentations, encouraging students to prepare and execute their tasks with care.

Takeaways

• 😀 Encapsulation in object-oriented programming is emphasized by hiding variables inside methods to control access and modification.
• 😀 Changing the value of a price in a class does not affect previous transactions, only new processes will reflect the updated value.
• 😀 The task requires students to implement object-oriented programming concepts like inheritance and classes, without using GUI.
• 😀 Methods like `setHarga` (set price) and `getHarga` (get price) are used to control the interaction with price values in a class.
• 😀 The example of price change demonstrates how it is encapsulated and does not impact previous transactions unless applied in a new context.
• 😀 The main task involves creating a text-based project based on object-oriented principles, with no graphical interface.
• 😀 Students are expected to use inheritance and other object-oriented concepts to complete the task.
• 😀 The midterm (UTS) will occur before the main task presentation, which will require the preparation of a presentation of the task.
• 😀 The course focuses on applying theoretical object-oriented concepts practically in assignments.
• 😀 The importance of following instructions for the task, specifically focusing on object orientation without GUI, is stressed.
• 😀 The speaker wraps up with apologies for any mistakes and a reminder for students to prepare for the midterm and future presentations.

Q & A

What is the main concept introduced in this lecture?

The main concept introduced in the lecture is Object-Oriented Programming (OOP), specifically focusing on encapsulation, classes, and inheritance in Java.

How does the change in price affect transactions in the example provided?

The change in price only affects new transactions and does not impact previous transactions. The updated price is implemented via methods like 'setHarga' and 'getHarga'.

What is the purpose of using encapsulation in the system described?

Encapsulation is used to protect variables inside methods, ensuring that changes, such as the price adjustment, do not directly affect other parts of the program unless a new transaction is processed.

Why is the 'setHarga' method important in this context?

'setHarga' is used to set or update the price. It is part of the encapsulation mechanism to control how the price is modified and accessed in the program.

What is the role of the 'getHarga' method mentioned in the transcript?

'getHarga' is used to retrieve the current price, providing access to the price value while keeping it protected and controlled within the class.

What type of programming should be used for the main assignment?

The main assignment should be developed using object-oriented programming (OOP) principles and must be text-based, without the use of a graphical user interface (GUI).

What is the importance of inheritance in the assignment task?

Inheritance is crucial for the assignment as it allows for code reuse and the creation of more specialized classes that extend from a general class, promoting modularity and scalability.

Why is the focus on non-GUI-based development for the assignment?

The focus on non-GUI-based development is likely to emphasize core programming skills, such as object-oriented design, without the additional complexity of graphical interfaces.

What will happen during the next class meeting, according to the transcript?

The next meeting will be after the midterm (UTS), and the students will present their main assignments, which have already been assigned to them.

What does the speaker hope students will learn from this class?

The speaker hopes students will be able to apply OOP concepts, such as encapsulation and inheritance, effectively in their main assignment and gain proficiency in object-oriented design.