Quick Answer: Is Constructor Return Any Value?

Can constructor take any number of parameters?

You can use any data type for a parameter of a method or a constructor.

This includes primitive data types, such as doubles, floats, and integers, as you saw in the computePayment method, and reference data types, such as objects and arrays..

What is the purpose of a private constructor?

Private constructors are used to prevent creating instances of a class when there are no instance fields or methods, such as the Math class, or when a method is called to obtain an instance of a class. If all the methods in the class are static, consider making the complete class static.

Why constructor does not return any value?

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. … The sole purpose of a constructor is to initialize the member variables of a class.

What is the return type of a method that does not return any value?

1. What is the return type of a method that does not return any value? Explanation: Return type of a method must be made void if it is not returning any value.

Are constructors void?

Because constructor function returns the object it creates, not Void.

Can we declare constructor as final?

No, a constructor can’t be made final. A final method cannot be overridden by any subclasses. As mentioned previously, the final modifier prevents a method from being modified in a subclass.

Can constructors be 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 happens if you keep a return type for a constructor?

Since constructor can only return the object to class, it’s implicitly done by java runtime and we are not supposed to add a return type to it. If we add a return type to a constructor, then it will become a method of the class. This is the way java runtime distinguish between a normal method and a constructor.

Can we declare constructor as private?

Yes, we can declare a constructor as private. If we declare a constructor as private we are not able to create an object of a class. We can use this private constructor in the Singleton Design Pattern.

What is the return type of constructor?

No, constructor does not have any return type in Java. … 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. If the programmer doesn’t write a constructor the compiler writes a constructors on his behalf.

What would be the behavior if constructor has a return type?

Explanation: Object of private constructor can only be created within class. … Explanation: The constructor cannot have a return type. It should create and return new objects. Hence it would give a compilation error.

Can constructor return any value in Java?

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.

Can constructor be overloaded?

Yes! Java supports constructor overloading. In constructor loading, we create multiple constructors with the same name but with different parameters types or with different no of parameters.

Does constructor return any value in C++?

Constructors are functions that do not return a value. The family of functions that do not return a value consists of: void functions, constructors and destructors. It is stated in 6.6. 3/2 in the C++ standard.

Can a destructor return a value?

Declaring destructors Do not return a value (or void ). Cannot be declared as const , volatile , or static . However, they can be invoked for the destruction of objects declared as const , volatile , or static .