Creating the roster array Student roster[]= new Student[40]i roster is an array of Student objects roster[o]= new Graduatestudent()i Create instances of roster[l]= new Undergraduatestudent()i he subclasses of oster [2]= new Undergraduatestudent()i Student roster [3]= new Graduatestudent()i roster 234 36373839 Graduate Under Under- Graduate Student graduate graduate-Student Student Student C 2000 McGraw-Hill troduction to Object-Oriented Programming with Java--Wu Chapter 14-6© 2000 McGraw-Hill Introduction to Object-Oriented Programming with Java--Wu Chapter 14 - 6 Creating the roster Array Student roster[ ] = new Student[40]; roster is an array of Student objects. Create instances of the subclasses of Student. roster[0] = new GraduateStudent( ); roster[1] = new UndergraduateStudent( ); roster[2] = new UndergraduateStudent( ); roster[3] = new GraduateStudent( ); 0 1 2 3 4 36 37 38 39 roster Graduate￾Student Under￾graduate￾Student Under￾graduate￾Student Graduate￾Student