Java OOP: The Role of Constructors in Inheritance
Java
| Intermediate
- 8 videos | 58m 19s
- Includes Assessment
- Earns a Badge
In this course, you will learn the role of constructors and how to use the super keyword in architecting inheritance hierarchies in Java. You will begin by identifying the role of access modifiers and recognizing the basics of superclass constructors. When you add your own constructor, you will see that Java takes away the default no-argument constructor it had provided. You will learn how to apply the two ways of initializing derived classes: implement an explicit no argument constructor in the base class or use the super keyword and have only parameterized constructors in both the base and derived classes. You will recognize that a base class's constructor is invoked when a derived class object is instantiated and identify what happens when there is a base and derived class that have many different constructors. You will be able to initialize member variables: add a member variable into a derived class and ensure it is correctly initialized, even in addition to any invocations of the base class constructor.
WHAT YOU WILL LEARN
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Discover the key concepts covered in this course
Identify the role of access modifiers and recognize the basics of constructors
Recognize when you add your own constructor, java takes away the default no-argument constructor it had provided
Apply the two ways of initializing derived classes - implement an explicit no argument constructor in the base class or use the super keyword and have only parameterized constructors in both the base and derived classes -
Recognize that a base class's constructor is invoked when a derived class object is instantiated
Identify what happens when there is a base and derived class that have many different constructors
Add a member variable into a derived class and ensure it is correctly initialized, even in addition to any invocations of the base class constructor
Summarize the key concepts covered in this course
IN THIS COURSE
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1m 42s
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10m 57sIn this video, you will learn how to identify the role of access modifiers and recognize the basics of constructors. FREE ACCESS
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3. Introduction to Constructors7m 6sUpon completion of this video, you will be able to recognize when you add your own constructor, Java takes away the default no-argument constructor it had provided. FREE ACCESS
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4. Using the super Keyword8m 9sIn this video, you will learn how to apply the two ways of initializing derived classes - implementing an explicit no argument constructor in the base class or using the super keyword and having only parameterized constructors in both the base and derived classes. FREE ACCESS
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5. Default and Parameterized Constructors9m 11sUpon completion of this video, you will be able to recognize that a base class's constructor is invoked when a derived class object is instantiated. FREE ACCESS
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6. Invoking Base Class Constructors9m 17sFind out how to identify what happens when there is a base and derived class that have many different methods. FREE ACCESS
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7. Initializing Member Variables10m 29sLearn how to add a member variable into a derived class and ensure it is correctly initialized, even if the base class constructor is invoked. FREE ACCESS
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8. Course Summary1m 29s
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