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Aindréas Ó hAodha
2023-12-07 01:19:12 +00:00
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second/semester1/logseq-stuff/logseq/bak/pages/More Java Code/2022-09-30T10_01_42.352Z.Desktop.md Normal file
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- #[[CT2106 - Object-Oriented Programming]]
- **Previous Topic:** [[First Java Code]]
- **Next Topic:** null
- **Relevant Slides:** ![Lecture03.pdf](../assets/Lecture03_1663063871202_0.pdf)
-
- # Composition & Inheritance
- ## Composition
- What is **Composition**? #card
card-last-interval:: 4
card-repeats:: 1
card-ease-factor:: 2.6
card-next-schedule:: 2022-09-21T20:50:47.300Z
card-last-reviewed:: 2022-09-17T20:50:47.301Z
card-last-score:: 5
- **Composition** is a type of "has-a" relationship. One object is **composed** of another and relies upon its services for its own functionality.
- It is one of the fundamental relationships between classes in OOP.
- For example:
- The class `RacingBike` **has-a** `Wheel` - **Composition**.
- How do you represent **Composition** in OOP class diagrams? #card
card-last-interval:: 9.55
card-repeats:: 2
card-ease-factor:: 2.6
card-next-schedule:: 2022-09-29T07:30:34.783Z
card-last-reviewed:: 2022-09-19T18:30:34.784Z
card-last-score:: 5
- In OOP class diagrams, a **diamond shape** indicates **composition** or a "has-a" relationship.
- ![image.png](../assets/image_1663271062397_0.png)
- This class diagram tells us that a `Vehicle` object is composed of a single `Engine` object.
- How do you realise **Composition** in Java? #card
card-last-interval:: 4
card-repeats:: 1
card-ease-factor:: 2.36
card-next-schedule:: 2022-09-21T19:47:12.777Z
card-last-reviewed:: 2022-09-17T19:47:12.777Z
card-last-score:: 3
- To realise a "has-a" relationship in Java, you must ^^create a link between the **participant classes** using a **reference type variable**.^^
- The reference declaration is in the **owner** class.
-
- # Inheritance
- What is **Inheritance**? #card
card-last-interval:: -1
card-repeats:: 1
card-ease-factor:: 2.5
card-next-schedule:: 2022-09-19T23:00:00.000Z
card-last-reviewed:: 2022-09-19T18:31:39.621Z
card-last-score:: 1
- **Inheritance** is a type of "is-a" relationship.
- It is one of the fundamental relationships between classes in OOP.
- For example:
- A `RacingBike` **is-a** type of `Bicycle` - **Inheritance**.
-
-

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second/semester1/logseq-stuff/logseq/bak/pages/More Java Code/2022-10-07T08_33_33.349Z.Desktop.md Normal file
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- #[[CT2106 - Object-Oriented Programming]]
- **Previous Topic:** [[First Java Code]]
- **Next Topic:** null
- **Relevant Slides:** ![Lecture03.pdf](../assets/Lecture03_1663063871202_0.pdf)
-
- # Composition & Inheritance
- ## Composition
- What is **Composition**? #card
card-last-interval:: 4
card-repeats:: 2
card-ease-factor:: 2.7
card-next-schedule:: 2022-10-04T09:28:05.146Z
card-last-reviewed:: 2022-09-30T09:28:05.146Z
card-last-score:: 5
- **Composition** is a type of "has-a" relationship. One object is **composed** of another and relies upon its services for its own functionality.
- It is one of the fundamental relationships between classes in OOP.
- For example:
- The class `RacingBike` **has-a** `Wheel` - **Composition**.
- How do you represent **Composition** in OOP class diagrams? #card
card-last-interval:: 10.8
card-repeats:: 3
card-ease-factor:: 2.7
card-next-schedule:: 2022-10-15T07:08:01.227Z
card-last-reviewed:: 2022-10-04T12:08:01.227Z
card-last-score:: 5
- In OOP class diagrams, a **diamond shape** indicates **composition** or a "has-a" relationship.
- ![image.png](../assets/image_1663271062397_0.png)
- This class diagram tells us that a `Vehicle` object is composed of a single `Engine` object.
- How do you realise **Composition** in Java? #card
card-last-interval:: -1
card-repeats:: 1
card-ease-factor:: 2.36
card-next-schedule:: 2022-09-30T23:00:00.000Z
card-last-reviewed:: 2022-09-30T09:28:00.640Z
card-last-score:: 1
- To realise a "has-a" relationship in Java, you must ^^create a link between the **participant classes** using a **reference type variable**.^^
- The reference declaration is in the **owner** class.
-
- # Inheritance
- What is **Inheritance**? #card
card-last-interval:: 2.22
card-repeats:: 2
card-ease-factor:: 2.36
card-next-schedule:: 2022-10-02T14:27:50.641Z
card-last-reviewed:: 2022-09-30T09:27:50.642Z
card-last-score:: 3
- **Inheritance** is a type of "is-a" relationship.
- It is one of the fundamental relationships between classes in OOP.
- For example:
- A `RacingBike` **is-a** type of `Bicycle` - **Inheritance**.
-
-

52
second/semester1/logseq-stuff/logseq/bak/pages/More Java Code/2022-11-11T12_04_45.349Z.Desktop.md Normal file
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@ -0,0 +1,52 @@
- #[[CT2106 - Object-Oriented Programming]]
- **Previous Topic:** [[First Java Code]]
- **Next Topic:** [[Variables & Types]]
- **Relevant Slides:** ![Lecture03.pdf](../assets/Lecture03_1663063871202_0.pdf)
-
- # Composition & Inheritance
- ## Composition
- What is **Composition**? #card
card-last-interval:: 10.24
card-repeats:: 3
card-ease-factor:: 2.56
card-next-schedule:: 2022-10-17T15:22:03.790Z
card-last-reviewed:: 2022-10-07T10:22:03.790Z
card-last-score:: 3
- **Composition** is a type of "has-a" relationship. One object is **composed** of another and relies upon its services for its own functionality.
- It is one of the fundamental relationships between classes in OOP.
- For example:
- The class `RacingBike` **has-a** `Wheel` - **Composition**.
- How do you represent **Composition** in OOP class diagrams? #card
card-last-interval:: 10.8
card-repeats:: 3
card-ease-factor:: 2.7
card-next-schedule:: 2022-10-15T07:08:01.227Z
card-last-reviewed:: 2022-10-04T12:08:01.227Z
card-last-score:: 5
- In OOP class diagrams, a **diamond shape** indicates **composition** or a "has-a" relationship.
- ![image.png](../assets/image_1663271062397_0.png)
- This class diagram tells us that a `Vehicle` object is composed of a single `Engine` object.
- How do you realise **Composition** in Java? #card
card-last-interval:: 3.58
card-repeats:: 2
card-ease-factor:: 2.46
card-next-schedule:: 2022-10-10T23:31:31.282Z
card-last-reviewed:: 2022-10-07T10:31:31.282Z
card-last-score:: 5
- To realise a "has-a" relationship in Java, you must ^^create a link between the **participant classes** using a **reference type variable**.^^
- The reference declaration is in the **owner** class.
-
- # Inheritance
- What is **Inheritance**? #card
card-last-interval:: 8.88
card-repeats:: 3
card-ease-factor:: 2.22
card-next-schedule:: 2022-10-15T14:18:15.221Z
card-last-reviewed:: 2022-10-06T17:18:15.222Z
card-last-score:: 3
- **Inheritance** is a type of "is-a" relationship.
- It is one of the fundamental relationships between classes in OOP.
- For example:
- A `RacingBike` **is-a** type of `Bicycle` - **Inheritance**.
-
-