Define the class RA (in a new file named: RA.java) that inherits from the base class...

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Define the class RA (in a new file named: RA.java) that inherits from the base class Graduate Student as shown in the UML above and note the following: a. Declare the instance variables as in the UML. b. Implement the setters and getters for each data member in the class c. Implement the parametrized constructor of the RA subclass that invokes the super class's constructor to initialize the instance variables name and ID, and then initializes the instance variable monthlySalary. d. Implement the overridden method income, that returns the monthlySalary. e. Override the method print to print first the name and id of the student by using the super class's print method, followed by the text: "is a Research Assistant who makes a total income of AED". Define the class RA (in a new file named: RA.java) that inherits from the base class Graduate Student as shown in the UML above and note the following: a. Declare the instance variables as in the UML. b. Implement the setters and getters for each data member in the class c. Implement the parametrized constructor of the RA subclass that invokes the super class's constructor to initialize the instance variables name and ID, and then initializes the instance variable monthlySalary. d. Implement the overridden method income, that returns the monthlySalary. e. Override the method print to print first the name and id of the student by using the super class's print method, followed by the text: "is a Research Assistant who makes a total income of AED".

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