Hogwarts:

This class is a subclass to School. Its purpose is to serve as the school of Hogwarts and provide methods that are specific to the fictional school. For example there is a method that tells you whether a student or teacher is part of Dumbledore's Army and a method that can tell you who is the wisest wizard at school based on their age. This class also implements the interface Enrollment which provides a method that relates to enrolling in the school of Hogwarts. For more information about the different methods in this class, refer to the comments made in my code.

Code

import java.util.ArrayList;//imports ArrayList

public class Hogwarts extends School implements Enrollment

{//opens class

private ArrayList <Wizard> wizards;//creates an private ArrayList called wizards

private ArrayList <String> dumbledoresArmy;//creates a private ArrayList called dumbledoresArmy

private Wizard [] students;//creates a private array called students

public Hogwarts()//creates zero argument constructor

{

wizards = new ArrayList <Wizard>();//initializes the ArrayList wizards

dumbledoresArmy = new ArrayList <String>();//initializes the ArrayList dumbledoresArmy

students = new Wizard [7];//initializes the array students

wizards.add(new Wizard("Harry", "Potter", 16, "Phoenix feather", "Gryffindor", false, false, "Gryffindor common room", new String [] {"Transfiguration, ", " Potions, ", "Defense Against the Dark Arts."}));

wizards.add(new Wizard("Hermione", "Granger", 16, "Dragon Heartstring", "Gryffindor",false, false, "Gryffindor common room", new String [] {"Transfiguration, ", " Potions, ", "Defense Against the Dark Arts."}));

wizards.add(new Wizard("Ron", "Weasley", 16, "Unicorn hair", "Gryffindor", false, false, "Gryffindor common room", new String [] {"Transfiguration, ", " Potions, ", "Defense Against the Dark Arts."}));

wizards.add(new Wizard("Severus", "Snape", 36, "Dragon heartstring","Slytherin", true, false, "Potion's classroom", new String [] {"Does not", " take ", "classes."}));

wizards.add(new Wizard("Draco", "Malfoy", 16, "Unicorn hair","Slytherin", false, false, "Slytherin common room", new String [] {"Transfiguration, ", " Potions, ", "Defense Against the Dark Arts."}));

wizards.add(new Wizard("Luna", "Lovegood", 16, "Unicorn hair","Ravenclaw", false, false, "Ravenclaw common room", new String [] {"Transfiguration, ", " Potions, ", "Defense Against the Dark Arts."}));

wizards.add(new Wizard("Neville", "Longbottom", 16, "Unicorn hair", "Gryffindor",false, false, "Gryffindor common room", new String [] {"Transfiguration, ", " Potions, ", "Defense Against the Dark Arts."}));

wizards.add(new Wizard("Cedric", "Diggory", 16, "Unicorn hair","Hufflepuff", false, false, "Hufflepuff common room", new String [] {"Transfiguration, ", " Potions, ", "Defense Against the Dark Arts."}));

wizards.add(new Wizard("Voldemort", "", 69, "Phoenix feather", "Slytherin", false, false, "Secret location", new String [] {"Does not", " take ", "classes."}));

wizards.add(new Wizard("Minerva", "McGonagall", 75, "Dragon heartstring", "Gryffindor",true, false, "Transfiguration classroom", new String [] {"Does not", " take ", "classes."}));

wizards.add(new Wizard("Albus", "Dumbledore", 114, "Thestral tail hair", "Gryffindor",true,false, "Dumbledore's office", new String [] {"Does not", " take ", "classes."}));

//adds multiple different Wizard objects into the array wizards

students[0] = wizards.get(0);

students[1] = wizards.get(1);

students[2] = wizards.get(2);

students[3] = wizards.get(4);

students[4] = wizards.get(5);

students[5] = wizards.get(6);

students[6] = wizards.get(7);

//sets the array students to different values in the ArrayList wizards

//this sets the array students to all the students at Hogwarts and not the teachers

dumbledoresArmy.add(wizards.get(0).getFirstName());

dumbledoresArmy.add(wizards.get(1).getFirstName());

dumbledoresArmy.add(wizards.get(2).getFirstName());

dumbledoresArmy.add(wizards.get(5).getFirstName());

dumbledoresArmy.add(wizards.get(6).getFirstName());

dumbledoresArmy.add(wizards.get(7).getFirstName());

//This sets dumbledoresArmy to all the students that are in dumbledore's Army in Hogwarts

}

public String getDumbledoresArmy()

{

String output = new String();

for (int i = 0; i<6; i++)

{

output = output + dumbledoresArmy.get(i) + "\n";

}//for loop that traverses the ArrayList dumbledoresArmy

return output;

}//a method that traverses the ArrayList dumbledoresArmy with a for loop and returns the values

public String getStudents()

{

String output = new String();

for (int i = 0; i<students.length; i++)

{

output = output + students[i]+ "\n";

}

return output;

}//a method that traverses the array

public String getWizards()

{

String wizardArrayValues = "";//creates a new string

int i = 0;//creates a counter for the do-while loop

do

{

wizardArrayValues = wizardArrayValues + wizards.get(i) + "\n";

i++;

}while(i<wizards.size());//a do-while loop that traverses the array wizards for its values

return wizardArrayValues;

}//a method that uses a do-while loop to return the values of the ArrayList wizards

public String toString()

{

String output = new String();//creates a new string called output

output = "Members of Dumbledore's Army: \n" + getDumbledoresArmy() + "\n\nAll wizards: \n" + getWizards();

return output;

}//a toString method that organizes the information and methods made and returns them neatly

public String defeatTheDeathEaters()

{

String output = new String();//creates a new string

int numberOfMembers = 0;//creates a counter for the for loop

for (int i = 0; i < wizards.size(); i++)

{

if(wizards.get(i).getAge()== 16 && ((wizards.get(i).getHouse().equals("Slytherin"))==false))

{

numberOfMembers++;

}//adds a member count to dumbledore's army if the Wizard object is not part of the Slytherin house and is of age 16

}//runs as long as the size of wizards is greater than the value of i

if (numberOfMembers>3)

{

output = output + "Yes! Dumbledore's army has defeated the Death Eaters!";

}//if dumbledore's army has more than three members than it is able to defeat the death eaters

else if (numberOfMembers<=3)

{

output = output + "No. Dumbledore's army has failed to defeat the Death Eaters.";

}//if dumbledore's army has less than or exactly three members than it is not able to defeat the death eaters

return output;

}//a method that states whether or not Dumbledore's Army defeated Voldemort's death eaters

public String getHarrysLocation()

{

return wizards.get(0).getLocation();

}//a method that returns the location of Harry Potter

public void apparationForHarry()//one part of the pair of the overloaded method

{

if (wizards.get(0).getLocation().equals("Gryffindor common room"))

{

wizards.get(0).setLocation("Dining hall");

}//if Harry is in the Gryffindor common room then he apparates to the dining hall when this method is called

}//this method simulates apparation for the character Harry Potter and changes his location depending on the conditions in the if-else statement

public void apparationForHarry(String location)//the second part of the pair of the overloaded method

{

if(wizards.get(0).getLocation().equals(location))

{

wizards.get(0).setLocation("Hogsmeade");

}//if Harry's location is equal to what it is set to in the parameter, then he apparates to Hogsmeade

else

{

wizards.get(0).setLocation("Dumbledore's office");

}//if Harry's location is not equal to what it is set to in the parameter, then he apparates to Dumbledore's office

}//this method states that depending on what the location is set to, Harry's location changes

public String Battle(Wizard x, Wizard y)

{

String battleResults = new String();

if (x.getWandType().equals("Phoenix feather") && y.getWandType().equals("Dragon heartstring"))

{

y.setInjured("true");//sets the loser to injured

battleResults = x.getFirstName() + " has won this battle. "+x.getFirstName()+" has a phoenix feather wand which beats " + y.getFirstName() + "'s wand, which was the dragon heartstring type.";

}//The phoenix feather wand type beats all other wand types in a battle

else if (x.getWandType().equals("Phoenix feather") && y.getWandType().equals("Unicorn hair"))

{

y.setInjured("true");//sets the loser to injured

battleResults = x.getFirstName() + " has won this battle. "+x.getFirstName()+" has a phoenix feather wand which beats " + y.getFirstName() + "'s wand, which was the unicorn hair type.";

}//The phoenix feather wand type beats all other wand types in a battle

else if (((x.getWandType().equals("Phoenix feather") && x.getWandPower()>y.getWandPower())&& (y.getWandType().equals("Phoenix feather") && y.getWandPower()<x.getWandPower())))

{

y.setInjured("true");//sets the loser to injured

battleResults = x.getFirstName() + " has won the battle. "+x.getFirstName()+" has a phoenix feather wand, like " + y.getFirstName() + ", but " +x.getFirstName()+ "'s wand had more wand power.";

}//if two wizards have the same wand types, then their wand power determines their results.

else if ((x.getWandType().equals("Phoenix feather") && x.getWandPower()<y.getWandPower()) && (y.getWandType().equals("Phoenix feather") && y.getWandPower()>x.getWandPower()))

{

x.setInjured("true");//sets the loser to injured

battleResults = y.getFirstName() + " has won the battle. "+y.getFirstName()+" has a phoenix feather wand, like " + x.getFirstName() + ", but " + y.getFirstName() + "'s wand had more wand power.";

}//if two wizards have the same wand types, then their wand power determines their results.

else if (x.getWandType().equals("Dragon heartstring") && y.getWandType().equals("Phoenix feather"))

{

x.setInjured("true");//sets the loser to injured

battleResults = y.getFirstName() + " has won this battle. "+y.getFirstName()+" has a phoenix feather wand which beats " + x.getFirstName() + "'s wand, which is the dragon heartstring type.";

}//Phoenix feather beats the dragon heartstring type

else if (x.getWandType().equals("Dragon heartstring") && y.getWandType().equals("Unicorn hair"))

{

y.setInjured("true");//sets the loser to injured

battleResults = x.getFirstName() + " has won this battle. "+x.getFirstName()+" have a dragon heartstring wand which beats " + y.getFirstName() + "'s wand which is the unicorn hair type.";

}//dragon heartstring beats the unicorn hair type

else if (((x.getWandType().equals("Dragon heartstring") && x.getWandPower()> y.getWandPower()) && (y.getWandType().equals("Dragon heartstring") && y.getWandPower()<x.getWandPower())))

{

y.setInjured("true");//sets the loser to injured

battleResults = x.getFirstName() + " has won the battle. "+x.getFirstName()+" has a dragon hearstring wand, like " + y.getFirstName() + ", but " +x.getFirstName()+ "'s wand had more wand power.";

}//if two wizards have the same wand types, then their wand power determines their results.

else if ((x.getWandType().equals("Dragon heartstring") && x.getWandPower()<y.getWandPower()) && (y.getWandType().equals("Dragon heartstring") && y.getWandPower()>x.getWandPower()))

{

x.setInjured("true");//sets the loser to injured

battleResults = y.getFirstName() + " has won the battle. "+x.getFirstName()+" has a dragon hearstring wand, like " + x.getFirstName() + ", but " +y.getFirstName()+ "'s wand had more wand power.";

}//if two wizards have the same wand types, then their wand power determines their results.

else if (x.getWandType().equals("Unicorn hair") && y.getWandType().equals("Phoenix feather"))

{

x.setInjured("true");//sets the loser to injured

battleResults = y.getFirstName() + " has won this battle. "+y.getFirstName()+" has a phoenix feather wand which beats " + x.getFirstName() + "'s wand, which is the unicorn hair type.";

}//phoenix feather beats the unicorn hair wand type

else if (x.getWandType().equals("Unicorn hair") && y.getWandType().equals("Dragon heartstring"))

{

x.setInjured("true");//sets the loser to injured

battleResults = y.getFirstName() + " has won this battle. "+y.getFirstName()+" has a dragon heartstring wand which beats " + x.getFirstName() + "'s wand which is the unicorn hair type.";

}//dragon heartstring beats the unicorn hair wand type

else if (((x.getWandType().equals("Unicorn hair") && x.getWandPower()> y.getWandPower()) && (y.getWandType().equals("Unicorn hair") && y.getWandPower()<x.getWandPower())))

{

y.setInjured("true");//sets the loser to injured

battleResults = x.getFirstName() + " has won the battle. "+x.getFirstName()+" has a unicorn hair wand, like " + y.getFirstName() + ", but " +x.getFirstName()+ "'s wand had more wand power.";

}//if two wizards have the same wand types, then their wand power determines their results.

else if ((x.getWandType().equals("Unicorn hair") && x.getWandPower()<y.getWandPower()) && (y.getWandType().equals("Unicorn hair") && y.getWandPower()>x.getWandPower()))

{

x.setInjured("true");//sets the loser to injured

battleResults = y.getFirstName() + " has won the battle. "+y.getFirstName()+" has a unicorn hair wand, like " + x.getFirstName() + ", but " +y.getFirstName()+ "'s wand had more wand power.";

}//if two wizards have the same wand types, then their wand power determines their results.

return battleResults;

}//this method returns the results of a battle between to Wizard objects depending on their wand type and sometimes their wand power, depending on the situation

public String wisestWizard()

{

int max = wizards.get(0).getAge();//sets the maximum value to the first age value in thea ArrayList wizards

String wisestWizard = "";//creates an empty string

for (int i = 0; i<wizards.size(); i++)

{

if( wizards.get(i).getAge() > max )

{

max = wizards.get(i).getAge();

}//if the wizard of index i's age is greater than the maximum, it gets set as the new maximum value

}//this for loops sets the maximum value to the largest age

for ( int index = 0; index<wizards.size(); index++)

{

if (max == wizards.get(index).getAge())

{

wisestWizard = wisestWizard + wizards.get(index).getFirstName() + " " + wizards.get(index).getLastName() + " is the wisest wizard.";;

}//if the wizard has the largest age, then they are the wisest wizard

}//this loop sets the wisest wizard to the wizard with the largest age

return wisestWizard;

}//find the wizest wizard depending on the oldest age (finds maximum age in the ArrayList)

public String wizardStudentClasses()

{

String output = new String();//creates a new string

for (int i = 0; i<students.length; i++)

{

output = output + students[i].getFirstName() + ": \n";

for (int index = 0; index < students[i].getClassLength(); index++)

{

output = output + students[i].getClasses()[index];

}//traverses the student of index i's classes and sets the output equal to their classes

output+="\n";//adds a line to the output for organization purposes

}//traverses the array students

return output;

}//this method uses a nested for loop to return the classes each student at Hogwarts takes

public String takingOWLExams()

{

String output = new String();//creates a new string

ArrayList <String> passingWizards = new ArrayList <String> ();//creates a new ArrayList called passingWizards

for (int i = 0; i<students.length; i++)

{

if (students[i].getFirstName().contains("a")||students[i].getLastName().contains("a"))

{

passingWizards.add(students[i].getFirstName());

}//if the student of index i's first name or last name contains the letter "a", they pass their exams. I chose the letter "a" because it represents an "A" grade in this situation

}//traverses the array students

System.out.println("Students that passed their OWL Exams:" );//prints out this line for organization purposes

for (int i = 0; i<5; i++)

{

output = output+ passingWizards.get(i) + "\n";

}//traverses the ArrayList passingWizards and sets it to the output

return output;

}//this method returns the names of the students who passed their OWL exams

public void enrollForClass()

{

System.out.println("Enrollment and tuition for Hogwarts is free.");

}//this method comes from the interface Enrollment that prints this statement to let students of Hogwarts know that tuition is free.

public String ronAndHermioneLove()

{

String coupleName = new String();//creates a new String

coupleName = (wizards.get(2).getFirstName().concat(wizards.get(1).getFirstName().substring(4)));//concatenates ron's name with the ending of hermione's name

return coupleName;

}//this method returns ron and hermione's couple name because they are the two love birds at Hogwarts

}