Does a constructor have a return value? No, constructor does not return any value. While declaring a constructor you will not have anything like return type. In general, Constructor is implicitly called at the time of instantiation. And it is not a method, its sole purpose is to initialize the instance variables.
Do constructors have return type? 3 Answers. Constructor is internally a nonstatic method with name
Why constructor have no return type? So the reason the constructor doesn’t return a value is because it’s not called directly by your code, it’s called by the memory allocation and object initialization code in the runtime.
Its return value (if it actually has one when compiled down to machine code) is opaque to the user – therefore, you can’t specify it.
Which constructor Cannot have return type? No, constructor does not have any return type in Java. Constructor looks like method but it is not. It does not have a return type and its name is same as the class name. Mostly it is used to instantiate the instance variables of a class.
Does a constructor have a return value? – Related Questions
What will happen if the constructor has a return type?
Explanation: The constructor cannot have a return type. It should create and return new objects. Hence it would give a compilation error. Explanation: Constructor returns a new object with variables defined as in the class.
Can a constructor be final?
Constructors are used to initialize an object. It is syntactically similar to a method but it has the same name as its class and a constructor does not have a return type. Java constructor can not be final. One of the important property of java constructor is that it can not be final.
What is the return type of constructors * 1 point?
1. What is the return type of Constructors
Can you call a constructor?
Invoking a constructor from a method
What is constructor and why there is no return value?
No, constructor does not return any value. While declaring a constructor you will not have anything like return type. In general, Constructor is implicitly called at the time of instantiation. And it is not a method, its sole purpose is to initialize the instance variables.
Can we declare constructor as private?
Yes. Class can have private constructor. Even abstract class can have private constructor. By making constructor private, we prevent the class from being instantiated as well as subclassing of that class.
What is the difference between a constructor and a method?
A Constructor is a block of code that initializes a newly created object. A Method is a collection of statements which returns a value upon its execution. A Constructor can be used to initialize an object. A Method consists of Java code to be executed.
Why do we use a constructor?
The purpose of constructor is to initialize the object of a class while the purpose of a method is to perform a task by executing java code. Constructors cannot be abstract, final, static and synchronised while methods can be. Constructors do not have return types while methods do.
Can you use this () and super () both in a constructor?
both this() and super() can not be used together in constructor. this() is used to call default constructor of same class.it should be first statement inside constructor. super() is used to call default constructor of base class.it should be first statement inside constructor.
Can abstract class have constructor?
The constructor inside the abstract class can only be called during constructor chaining i.
e.
when we create an instance of sub-classes.
This is also one of the reasons abstract class can have a constructor.
What is the return type of a method that does not return any value?
What is the return type of a method that does not return any value
Why we Cannot override static method?
Overloading is the mechanism of binding the method call with the method body dynamically based on the parameters passed to the method call. Static methods are bonded at compile time using static binding. Therefore, we cannot override static methods in Java.
Is constructor inherited?
Constructors are not members, so they are not inherited by subclasses, but the constructor of the superclass can be invoked from the subclass.
What is final finally finalize?
Final is used to apply restrictions on class, method and variable. Final class can’t be inherited, final method can’t be overridden and final variable value can’t be changed. Finally is used to place important code, it will be executed whether exception is handled or not. Finalize is a method.
Do constructors have a return type C++?
A constructor initializes an object immediately upon creation. It has the same name as the class in which it resides and is syntactically similar to a function. Once defined, the constructor is automatically called immediately after the object is created. Constructors have no return type, not even void.
What is a standard constructor?
The standard constructor is a constructor without arguments generated automatically by the compiler for all those classes that do not contain any constructor definition. In particular, the programmer can also explicitly define a constructor without arguments that replaces the standard constructor.
What value must a destructor return?
Destructors do not return a value.
