Meaning: always write an empty constructor in your entity. But Java always gives you this empty constructor when you don’t redefine it (write an other one with parameters).
Read moreCan a class have no constructor C++?
If your class has no constructors, C++ will automatically generate a public default constructor for you . This is sometimes called an implicit constructor (or implicitly generated constructor). The Date class has no constructors.
Read moreWhat is an empty constructor in 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 moreCan a constructor be empty?
The body of the constructor is defined inside the curly brackets { } after the parameter list. In the constructor example above the constructor has no operations inside the constructor body. It is said to be an “empty” constructor .
Read moreDo inherited classes need constructors?
In inheritance, the derived class inherits all the members(fields, methods) of the base class, but derived class cannot inherit the constructor of the base class because constructors are not the members of the class .
Read moreCan constructor be inherited C++?
Cpp Primer Plus says, Constructors are different from other class methods in that they create new objects, whereas other methods are invoked by existing objects. This is one reason constructors aren’t inherited .
Read more