The dot operator( . ) is used to access the instance variables and methods of class objects. Example

e1.name ; //reference to the variable name
e1.sal( ); //reference to the method sal( )

it is also used to access classes and sub-packages from a package that I have discussed in middle.

Java new operator:

new operator is used to create object of a class. We know that an object is nothing but a dynamic memory area which is created by JVM.
The general form is :

classname objectname=new classname( );
Student s=new Student( ); // s is an object of the Student class