Users do not need to write constructors for every class . A constructor can be declared using any of the access modifiers. It is mandatory to have a constructor with the right access modifier. However, the compiler supplies a default if an access modifier is not defined in the class and a constructor is not declared.
Read moreIs it mandatory to use constructor in a class C++?
Answer: C++ Empty constructor necessity depends upon class design requirements . We know that C++ class constructor is called when we create an object of a class. If a class is not required to initialize its data member or does not contain data member, there is no need to write empty constructor explicitly.10 Eki 2016
Read moreWhat happens if we dont use constructor in Java?
Answer: Java does not actually require an explicit constructor in the class description. If you do not include a constructor, the Java compiler will create a default constructor in the byte code with an empty argument .
Read moreWhat is a class without a constructor?
Unless the class is static, classes without constructors are given a public parameterless constructor by the C# compiler in order to enable class instantiation . For more information, see Static Classes and Static Class Members.
Read moreCan you have a class without constructors?
You don’t have to provide any constructors for your class, but you must be careful when doing this. The compiler automatically provides a no-argument, default constructor for any class without constructors .
Read moreDoes all Java class need a constructor?
All classes have constructors by default : if you do not create a class constructor yourself, Java creates one for you. However, then you are not able to set initial values for object attributes.
Read moreCan I have class without constructor?
Answer: Yes, C# class without constructor is possible . In fact, we can have a class without any constructor in C#. If we don’t declare any constructors in a class, the compiler automatically provides a public parameter less constructor. And it is ok to instantiate the class without constructor.
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