In Java!!!!!This is a multi-part question. Consider the following UML diagram on attached image: 1.Write Java classes corresponding to the UML diagram. 2. Write getters and setters for all classes 3. Write non-default constructors for each class that initializes all instance variables to values passed as arguments to the constructor 4. Write toString method for each class 5. Modify Vehicle class to maintain inventory (list of all vehicles created) and print the list. What variable(s) you need to add? What additional method(s) you need? What else needs to be modified in the Vehicle class? Do you need to modify any of the descendant classes and explain your answer (if not: why not; if yes, describe what changes).

Implement a nested class composition relationship between any two class types from the following list: Advisor Вook Classroom Department Friend Grade School Student Teacher Tutor Write all necessary code for both classes to demonstrate a nested composition relationship including the following: a. one encapsulated data member for each class b. inline default constructor using constructor delegation for each class c. inline one-parameter constructor for each class d. inline accessors for all data members e. inline mutators for all data members

Java Program  This assignment requires one project with two classes. Class Employee Class Employee- I will attach the code for this:  //Import the required packages. import java.text.DecimalFormat; import java.text.NumberFormat;   //Define the employee class. class Employee {    //Define the data members.  private String id, lastName, firstName;  private int salary;    //Create the constructor.  public Employee(String id, String lastName,              String firstName, int salary) {      this.id = id;      this.lastName = lastName;      this.firstName = firstName;      this.salary = salary;  }    //Define the getter methods.  public String getId() {      return id;  }  public String getLastName() {      return lastName;  }  public String getFirstName() {      return firstName;  }  public int getSalary() {      return salary;  }    //Define the method to return the employee details.  @Override  public String toString() {           //Use number format and decimal format      //to…

JAVA:

You need to perform following things to demonstrate the concept of abstract class. Step 1: Create the abstract class that has following methods. • Calculate the area of circle(Abstract method) • Calculate the area of triangle(Abstract method) • Calculate the area of rectangle(Method with implementation) Step 2: Create another class that extends above class and provide implementation of abstract methods. Step 3: Create the main method inside above class and display output of area of circle, area of triangle and area of rectangle. You need to submit the following things: • Java program with both the classes An output screenshot created using Microsoft Word

Plese solve this with Java program concept only. Plese answers according to the questions carefully. Thank you in advance.

Explain through each question about Classes and Objects in Java.  What is encapsulations and why is it useful? What is an instance method and how does it differ from the static methods we learned previously? What is a mutator method? What is an accessor method? What is a constructor in a Java class? What is an implicit parameter? Please provide an entire coding example to illustrate the answer.

1.Abstract classes, 2.abstract methods  3.Interfaces are three important OOP concepts. Give an example where each would be appropriate to use

Write the implementation of the Java classes based on the following UML diagram. (a) Define the method IncreTotSpecies) to increment the data field totalSpecles (b) Define the method printColor) to print the data field color (c) Override the method printColor) in the class Falcon to print the data fields featherColor, beakColor Birds +color: String +foodHabit: String +totalSpecies: int -skeleton: String +Birds () +Birds(color: String, foodHabit: String, skeleton: String) +increTotSpecies (): void +printColor (): void Falcon -featherColor: String -beakColor: String +Falcon (featherColor: String, beakColor: String) +printColor (): void

Java Program  This assignment requires one project with two classes. Class Employee Class Employee- I will attach the code for this:  //Import the required packages. import java.text.DecimalFormat; import java.text.NumberFormat;   //Define the employee class. class Employee {    //Define the data members.  private String id, lastName, firstName;  private int salary;    //Create the constructor.  public Employee(String id, String lastName,              String firstName, int salary) {      this.id = id;      this.lastName = lastName;      this.firstName = firstName;      this.salary = salary;  }    //Define the getter methods.  public String getId() {      return id;  }  public String getLastName() {      return lastName;  }  public String getFirstName() {      return firstName;  }  public int getSalary() {      return salary;  }    //Define the method to return the employee details.  @Override  public String toString() {           //Use number format and decimal format      //to…