It is possible for a class to have no constructor . (An important distinction to draw here is that the JVM does not require all class files to have a constructor; however, any class defined in Java does have a default constructor if a constructor is not explicitly declared.
Read moreCan we create object in C++ without new?
In C++, we can instantiate the class object with or without using the new keyword. If the new keyword is not use, then it is like normal object. This will be stored at the stack section. This will be destroyed when the scope ends.
Read moreWhy do we need empty constructor?
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 moreCan we create an object without constructor in C++?
Defining a class without a constructor but with a destructor is perfectly legal C++, but is not recommended. Your compiler will try to generate a default constructor for you, which will automatically call the default constructor of all members in your class.
Read moreCan I create object without constructor?
Actually, yes, it is possible to bypass the constructor when you instantiate an object, if you use objenesis to instantiate the object for you . It does bytecode manipulations to achieve this. Deserializing an object will also bypass the constructor.
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 more