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If subclass (child class) has the same method as declared in the parent class, it is known as method overriding in Java. In other words, If a subclass provides the specific implementation of the method that has been declared by one of its parent class, it is known as method overriding. Usage of Java Method Overriding
Rules for Java Method Overriding
Understanding the problem without method overridingLet's understand the problem that we may face in the program if we don't use method overriding. Test it NowOutput: Problem is that I have to provide a specific implementation of run() method in subclass that is why we use method overriding. Example of method overridingIn this example, we have defined the run method in the subclass as defined in the parent class but it has some specific implementation. The name and parameter of the method are the same, and there is IS-A relationship between the classes, so there is method overriding. Test it NowOutput: A real example of Java Method OverridingConsider a scenario where Bank is a class that provides functionality to get the rate of interest. However, the rate of interest varies according to banks. For example, SBI, ICICI and AXIS banks could provide 8%, 7%, and 9% rate of interest. Java method overriding is mostly used in Runtime Polymorphism which we will learn in next pages.Test it NowOutput: SBI Rate of Interest: 8 ICICI Rate of Interest: 7 AXIS Rate of Interest: 9 Can we override static method?No, a static method cannot be overridden. It can be proved by runtime polymorphism, so we will learn it later. Why can we not override static method?It is because the static method is bound with class whereas instance method is bound with an object. Static belongs to the class area, and an instance belongs to the heap area. Can we override java main method?No, because the main is a static method. Difference between method Overloading and Method Overriding in javaClick me for the difference between method overloading and overriding More topics on Method Overriding (Not For Beginners)Method Overriding with Access Modifier Let's see the concept of method overriding with access modifier. Exception Handling with Method Overriding Let's see the concept of method overriding with exception handling. DownloadApp
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Correct Option: CMethod overriding
Your comments will be displayed only after manual approval. What is the process of defining a method in a subclass having same name and type signature?Explanation: When a method in a subclass has the same name and type signatures as a method in the superclass, then the method in the subclass overrides the method in the superclass.
What is the procedure for defining a method in a subclass with the same name and signature type as a method in its superclass?2. What is the process of defining a method in a subclass having same name & type signature as a method in its superclass? Explanation: None.
What is the process of defining more than one method with the same name in a class differentiated by method signature?Explanation: Function overloading is a process of defining more than one method in a class with same name differentiated by function signature i:e return type or parameters type and number.
Is it possible for a subclass to define a method with the same name and parameters as a method defined by the base class?A subclass can do more than that; it can define a method that has exactly the same method signature (name and argument types) as a method in its superclass. In that case, the method in the subclass overrides the method in the superclass and effectively replaces its implementation, as shown in Figure 6-3.
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