Why are default constructors used?

Example 5: Default Constructor Hence, the Java compiler automatically creates the default constructor. The default constructor initializes any uninitialized instance variables with default values . In the above program, the variables a and b are initialized with default value 0 and false respectively.

What is the significance of the default constructor? They are used to create objects, which do not have any having specific initial value . Is a default constructor automatically provided? If no constructors are explicitly declared in the class, a default constructor is provided automatically.9 Oca 2022

Default Constructors in C++ Constructors are functions of a class that are executed when new objects of the class are created. The constructors have the same name as the class and no return type, not even void. They are primarily useful for providing initial values for variables of the class .

In both Java and C#, a “default constructor” refers to a nullary constructor that is automatically generated by the compiler if no constructors have been defined for the class . The default constructor implicitly calls the superclass’s nullary constructor, then executes an empty body.