Design a class named Teacher. The class contains:

private instance variables:

designation: String.

The value of designation is $$teacher$$

CollegeName: String

The value of CollegeName is $$BeginnersBook$.$

public methods:

$-$ setDesignation$()$: that initializes teacher$$s designation

$-$ setCollegeName$()$: that initializes teacher$$s CollegeName

$-$ getDesignation$()$: that returns teacher$$s designation

$-$ getCollegeName$()$: that returns teacher$$sCollegeName

$-$ does$()$: that prints $$teaching$$

Design a class named PhysicsTeacher which inherits from Class Teacher. The Class contains:

public instance variable

mainSubject: String;

The value of mainSubject is $$Physics$$

In the java main method:

create one PhysicsTeacher object named obj,

print CollegeName$$s value

print designation$$s value

print mainSubject$$s value

call method $$does$()$