studentAndClassObjects

/* This program works with array objects in main 
 * and an object that contains an array. This is
 * broken into two tasks. #1 using Student class
 * to create student objects and store them in an 
 * array in main. Setters and getters will be used
 * to get/set information out of the class into 
 * main and find highest GPA and average from 
 * students in an array. #2 using Course class to
 * create two course classes that hold an array of
 * students as an instance variable in the class.
 * Course class method will be used to add students
 * to the array in class. This class will get highest
 * GPA and averageGPA from the students in course.
 */

public class MartinHaileyHW08 {

	public static void main(String[] args) {
		// TODO Auto-generated method stub
		System.out.println("********************************************\r\n"
				+ "Part1:  Array of Student Objects in Main  \r\n"
				+ "********************************************\r\n");
		//construct a new student from the student class blue print
		Student student1 = new Student("Firmware Rebels", 3.5);
		
		//construct a new student from the student class blue print
		Student student2 = new Student("Debug Entity", 2.7);
		
		//construct a new student from the student class blue print
		Student student3 = new Student("Zip Demons", 4.0);
		
		//construct a new student from the student class blue print
		Student student4 = new Student("Stack Terror", 3.2);

		//construct a new student from the student class blue print
	    Student student5 = new Student("Binary Beast", 2.8);
		
	    //construct a new student from the student class blue print
	    Student student6 = new Student("Method Madness", 3.6);
		
	    //construct a new student from the student class blue print
	    Student student7 = new Student("Heap Hellion", 3.9);
	    
	    //array that will hold Student objects
	    Student[] students;
	    //allocate memory for students
	    students = new Student[7];
	    
	    //add students to array
	    students[0] = student1;
	    students[1] = student2;
	    students[2] = student3;
	    students[3] = student4;
	    students[4] = student5;
	    students[5] = student6;
	    students[6] = student7;
	    
	    
	    //display students
	    System.out.println("--------------------------------------------\r\n"
	    		+ "Student			 GPA\r\n"
	    		+ "--------------------------------------------\r\n");
	    
	    for(int i=0; i< students.length; i++) {
	    	String name = students[i].getName();
	    	double GPA = students[i].getGpa();
	    	System.out.printf(name + "	   	  " +GPA+ "\n");
	    	 
	    }
	    
	    
	    //display student with highest gpa
	    System.out.println("\n--------------------------------------------\r\n"
	    		+ "Student with highest gpa\r\n"
	    		+ "--------------------------------------------\r\n");
	    double highestGPA = 0;
	    String highestStudent = " ";
	    
	    for(int i=0; i< students.length; i++) {
	    	if(students[i].getGpa() > highestGPA) {
	    		highestGPA= students[i].getGpa();
	    		highestStudent = students[i].getName();
	    	}
	    }
	    System.out.println("Student:	" +highestStudent);
	    System.out.println("GPA:	" +highestGPA+ "\n");
	    
	    
	    
	    
	    System.out.println("\n********************************************\r\n"
	    		+ "Part 2 Array of Students in Course Class     \r\n"
	    		+ "********************************************\r\n");
	    
	   //get number of courses
	   //int numOfCourses = getNumCourses();
	    
	   //construct a new course from the name and max number of students
	   Course course1 = new Course("CS1150", 6);
	   
	   //display course1 name, maxNumStudents and numEnrolled	   
	   System.out.println("Number of courses available: " +course1.getNumCourses() + "\r\n"
	   		+ course1.getName()+" is available for registering, max number of students is " +course1.getMaxStudents()+ "\r\n"
	   		+ "Number of students currently enrolled: " +course1.getNumStudents()+ "\r\n"
	   		+ "The class is full. Heap Hellion, you have been added to the waitlist\r\n"
	   		+ "");
	   
	   //construct a new course from the name and max number of students
	   //Course course2 = new Course("CS11502", 6); 
	   
	  
	   //add students to the course
	   for(int i=0; i< course1.getMaxStudents(); i++) {
		   course1.addStudent(students[i]); 
	    }
	   
	   /*
	   course1.addStudent(student1);
	   course1.addStudent(student2);
	   course1.addStudent(student3);
	   course1.addStudent(student4);
	   course1.addStudent(student5);
	   course1.addStudent(student6);
	   course2.addStudent(student7);*/
	   
	   
	   
	   
	   //display course information
	   System.out.println("--------------------------------------------\r\n"
	   		+ "Course Information \r\n"
	   		+ "--------------------------------------------\r\n"
	   		+ "Number of courses: "+ course1.getNumCourses() +"\r\n"
	   		+ "Course: " +course1.getName() + "\r\n"
	   		+ "Number of students: " + course1.getMaxStudents() + "\r\n"
	   		+ "Roster \r\n"
	   		+ "" );
	   System.out.println("--------------------------------------------\r\n"
	   		+ "Student			 GPA\r\n"
	   		+ "--------------------------------------------\r\n");
	   
	   //display students in course array
	   course1.displayStudents();
	   
	   //find average GPA of the students in the course
	   double averageGPA = course1.getAverageGPA();
	   System.out.printf("\nCourse Average GPA: %.1f",averageGPA);
	   
	   
	   //find student with highest GPA in course
	   Student studentGPA = course1.getHightestGPA();
	   System.out.println("\nHighest GPA in Course: \n" + "Student: " +studentGPA.getName());
	   System.out.println("GPA: " +studentGPA.getGpa());
	   
	   
	   
	   
	}//end of main

}//end of hw8 class
class Student{
	private String name;
	private double gpa;
	
	//construct a student with a specified name and gpa
	public Student(String name, double gpa) {
		this.name = name;
		this.gpa = gpa;
		
	}
	
	//return the name of this student
	public String getName() {
		return name;
	}
	
	//return the gpa of this student
		public double getGpa() {
			return gpa;
		}
	//set a new grade for this student
		public void setGpa(double gpa) {
			this.gpa = gpa;
		}
		
		
}//end of student class



class Course{
	private String name;
	private int maxStudents;
	private Student[] students;
	private static int numStudents = 0;
	
	public static int numCourses = 0;
	
	//construct a course with a specified name maxNum students
	public Course(String name, int maxStudents) {
		this.name = name;
		this.maxStudents = maxStudents;
		
		numCourses++;
		
		//allocate memory for the students array
		students = new Student[maxStudents];
	}
	
	//return the name of this course
	public String getName() {
		return name;
	}
	
	//return the maxStudents
	public int getMaxStudents() {
		return maxStudents;
	}
	
	//return the numStudents
	public int getNumStudents() {
		return numStudents;
	}
	
	//return the numCourses
	public int getNumCourses(){
		return numCourses;
	}
	
	//set student array to course student array
	public void addStudent(Student studentToAdd) {

		this.students[numStudents] = studentToAdd;
		
		numStudents++;
	}
	
	public Student getHightestGPA() {
		
		Student highestGPA = students[0]; 
	    
	    for(int i=0; i< students.length; i++) {
	    	if(students[i].getGpa() > highestGPA.getGpa()) {
	    		highestGPA = students[i];
	    	}
	    }
		
		 return highestGPA;
	}
	
	//get average gpa
	public double getAverageGPA() {
		double avg = 0;
		double sum = 0;
		for (int i = 0; i < students.length; i++) {
			sum = sum + students[i].getGpa();
			
		}
		avg = sum / students.length;
		return avg;
	}
	
	
	//display student array: name and gpa
	public void displayStudents() {
		for(int i = 0; i <students.length; i++) {
			System.out.print(students[i].getName());
			System.out.print("		  ");
			System.out.print(students[i].getGpa());
			System.out.print("\n");
		}
			
		
	}
	
}//end of course class