Can abstract class have return type

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WebSep 10, 2024 · You can return an abstract class. There’s no law about returning interfaces or abstract classes, it depends on your software design: One way to to return your x , y … WebThe abstract keyword is a non-access modifier, used for classes and methods: Abstract class: is a restricted class that cannot be used to create objects (to access it, it must be …

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WebApr 10, 2024 · An Abstract class is never intended to be instantiated directly. An abstract class can also be created without any abstract methods, We can mark a class abstract even if doesn’t have any abstract method. The Abstract classes are typically used to define a base class in the class hierarchy. WebOct 27, 2024 · 1) A class is abstract if it has at least one pure virtual function. In the following example, Test is an abstract class because it has a pure virtual function show … how to stake ftt coin

Abstract Methods and Classes (The Java™ Tutorials - Oracle

WebPHP has abstract classes and methods. Classes defined as abstract cannot be instantiated, and any class that contains at least one abstract method must also be abstract. Methods defined as abstract simply declare the method's signature; they cannot define the implementation. WebAbstract class in Java A class which is declared as abstract is known as an abstract class. It can have abstract and non-abstract methods. It needs to be extended and its method implemented. It cannot be … WebOct 27, 2024 · Abstract classes may also define abstract methods. This is accomplished by adding the keyword abstract before the return type of the method. For example: C# public abstract class A { public abstract void DoWork(int i); } Abstract methods have no implementation, so the method definition is followed by a semicolon instead of a normal … how to stake grt token

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WebFeb 19, 2024 · Can abstract class have main () function defined inside it? (a) Yes, depending on return type of main () (b) Yes, always. (c) No, main must not be defined … WebAn abstract method doesn't have any implementation (method body). A class containing abstract methods should also be abstract. We cannot create objects of an abstract … how to stake harmonyWeba) Yes, depending on return type of main () b) Yes, always c) No, main must not be defined inside abstract class d) No, because main () is not abstract function View Answer 3. If there is an abstract method in a class then, ________________ a) Class must be abstract class b) Class may or may not be abstract class c) Class is generic how to stake fiddle leaf fig

"WebNov 2, 2024 · Properties of an abstract class: An abstract class can have an abstract and a non-abstract method. It must be declared with an abstract keyword. It can have a constructor, static method. It can have a final method that prevents child class of abstract class not to change the body of the method " - Can abstract class have return type

Can abstract class have return type

Can abstract class have main() function defined inside it?

WebMay 17, 2010 · You can't return abstract class itself in the funtion return, but abstract class point and abstract class reference are both OK. The only thing you need to worry is … WebApr 11, 2024 · An abstract member does not have an implementation in its class. You don't need to annotate abstract classes or functions with open. abstract class Polygon { abstract fun draw() } class Rectangle : Polygon() { override fun draw() { // draw the rectangle } } You can override a non-abstract open member with an abstract one.

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WebMar 15, 2024 · Answer: Yes, we can have a parameterized constructor in an abstract class. Then we can call this constructor from the derived class that inherited the abstract class using super () call. Q #4) Do you know why there is no Destructor in Java? Answer: Java need not have a specific destructor as it has its garbage collector.

WebAn abstract class is a class that is declared abstract—it may or may not include abstract methods. Abstract classes cannot be instantiated, but they can be subclassed. An … Webpublic abstract void method (); Explanation: In A, the method has no return type. In C, void and abstract are in a wrong order. In D, the abstract keyword is missing. In E, the body {} should be removed. The correct answer is B. Which of the following declares an abstract method in an abstract Java class? A. public abstract method ();

Web2. Any class that contains at least one abstract method must also be abstract: Abstract class can have abstract and non-abstract methods, but it must contain at least one abstract method. If a class has at least one abstract method, then the class must be declared abstract. WebNov 29, 2014 · Answer: Yes, an abstract class can have a constructor. In general, a class constructor is used to initialize fields. Along the same lines, an abstract class constructor is used to initialize fields of the abstract class. Let's see an example. Step 1 First we will create a console application named InterviewQuestionPart7. Step 2

WebOct 27, 2024 · Abstract classes may also define abstract methods. This is accomplished by adding the keyword abstract before the return type of the method. For example: C# …

WebYou cannot use an abstract class as a parameter type, a function return type, or the type of an explicit conversion, nor can you declare an object of an abstract class. You can, however, declare pointers and references to an abstract class. The following example demonstrates this: reach metricsWebApr 5, 2024 · Abstract class can have static fields and static method, like other classes. An abstract class cannot be declared as final. Only abstract class can have abstract methods. A private, final, static method cannot be abstract, as it cannot be overridden in a subclass. Abstract class cannot have abstract constructors. reach mgsWebOct 9, 2014 · If you want to only return types that derive from your abstract class, then why don't you use the abstract class as the generic constraint. Using the interface does not necessarily guarantee that T will be a type derived from ObjectRefBase. It only guarantees that T implements the interface. Rudy =8^D Mark the best replies as answers. how to stake green giant arborvitaeWebMar 9, 2009 · Also, if T is always BaseClass, you don't need to return BaseClass, but only T. Your object model has the generic type of the inherited BaseClass … reach metrics adwordsWebMar 27, 2024 · We can have an abstract class without any abstract method. There can be a final method in abstract class but any abstract method in class (abstract class) can … how to stake grt coinWebIn this class, we have defined two non-abstract methods i.e. Add and Sum, and two abstract methods i.e. Mul and Div. Further, if you notice we create the class AbsParent using the abstract keyword as this class contains two abstract methods. Console.WriteLine($"Subtraction of {x} and {y} is : {x - y}"); how to stake helium hntWebFeb 19, 2024 · (a) Yes, depending on return type of main () (b) Yes, always (c) No, main must not be defined inside abstract class (d) No, because main () is not abstract function object-oriented-programming classes abstract-class 1 Answer 0 votes answered Feb 19, 2024 by Akshatsen (30.0k points) selected Feb 19, 2024 by SiddhiIngale how to stake harmony one