Class instance creation is used to initialize a variable of a class type.

Any class can contain a main method since the JVM invokes the main method only in the class used to execute the application.

A call to a constructor is similar to a call to a method but is used only at the time when an object is created to initialize the object's data.

Parentheses in combination with a class name can represent a call to a constructor.

You can call a method that belongs to another class until you create an object of that class.