You are required to convert the UML class diagrams shown below into Java code. Cat numberOfTeeth : int lengthofTail: int name : String ownerName String + Pet (name:String, ownerName:String) + getName(): String + getOwner Name (): String Pet + Cat (name: String, ownerName: String, numberOfTeeth:int, lengthofTail:int) + getNumber of Teeth (): int +getLengthofTail (): int Budgie colourOfFeathers String + Budgie (name: String, ownerName: String, colourOfFeathers: String) + getColourOfFeathers (): String

public class LabProgram {   public static void main(String args[]) {   Course course = new Course(); String first;  // first name       String last;   // last name       double gpa;    // grade point average              first = "Henry";       last = "Cabot";       gpa = 3.5;       course.addStudent(new Student(first, last, gpa));  // Add 1st student              first = "Brenda";       last = "Stern";       gpa = 2.0;       course.addStudent(new Student(first, last, gpa));  // Add 2nd student              first = "Jane";       last = "Flynn";       gpa = 3.9;       course.addStudent(new Student(first, last, gpa));  // Add 3rd student              first = "Lynda";       last = "Robison";       gpa = 3.2;       course.addStudent(new Student(first, last, gpa));  // Add 4th student   course.printRoster(); }     } // Class representing a student public class Student {   private String first;  // first name private String last;   // last name private double gpa;    // grade point average…

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this is my retail item code: //Import statements public class RetailItem {      private String description;      private int units;      private double price;      public RetailItem()      {      }      public RetailItem(String x, int y, double z)      {           description = x;           units = y;           price = z;      }      public RetailItem(RetailItem i) {      }      public void setDescription(String x)      {           description = x;      }      public void setPrice(double z) {           price = z;      }      void setUnits(int y) {           units = y;      }      public int getUnits()      {           return units;      }      public String getDescription()      {           return description;      }      public double getPrice()      {           return price;      }      // Main class      public static void main(String[] args)      {           String str = "Shirt";           RetailItem r1 = new RetailItem("Jacket", 12,…