Question

Goal: In this lab, we will practice how to apply both the inheritance and composition concepts to write a Department class. 1. Implement the Department Class. Implement the following class: public class Department{ * The basic feature of a department */ private String deptName; private int numMajors; private Teacher[] list Teachers; //inherits from Person class private Student[] listStudents; //inherits from Person class /* Construct a department object (at least TWO constructors) */ * Accessors and mutators (one pair per each feature) */ /* toString method */ } Fill in the blanks above according to the guidelines in the comments. Also write a main method that will use one of constructors to create two Department objects. Your main method should print out the details of these two Departments (each department with at least 5 students and 3 teachers).

Answer 1

:: Solution ::

//Department.java
import java.util.Arrays;

public class Department {
    private String departmentName;
    private int numMajors;
    private Teacher[] listTeachers;
    private Student[] listStudents;

    public Department() {
    }

    public Department(String departmentName, int numMajors, Teacher[] listTeachers, Student[] listStudents) {
        this.departmentName = departmentName;
        this.numMajors = numMajors;
        this.listTeachers = listTeachers;
        this.listStudents = listStudents;
    }

    public String getDepartmentName() {
        return departmentName;
    }

    public void setDepartmentName(String departmentName) {
        this.departmentName = departmentName;
    }

    public int getNumMajors() {
        return numMajors;
    }

    public void setNumMajors(int numMajors) {
        this.numMajors = numMajors;
    }

    public Teacher[] getListTeachers() {
        return listTeachers;
    }

    public void setListTeachers(Teacher[] listTeachers) {
        this.listTeachers = listTeachers;
    }

    public Student[] getListStudents() {
        return listStudents;
    }

    public void setListStudents(Student[] listStudents) {
        this.listStudents = listStudents;
    }

    @Override
    public String toString() {
        return "Department{" +
                "departmentName='" + departmentName + '\'' +
                ", numMajors=" + numMajors +
                ", listTeachers=" + Arrays.toString(listTeachers) +
                ", listStudents=" + Arrays.toString(listStudents) +
                '}';
    }

    public static void main(String args[]){
        Department department = new Department("CSE",5,null,null);
        System.out.println(department);
    }
}

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