I need help as soon as possible please hs to with arrays.
import java.util.Random;
public class AviarySimulator
// Instance variables
private Aviary aviary;
private int numberOfDays = 0;
private Random r;
public void simulateDay(int amtFeed)
//a new Day
numberOfDays++;
System.out.println("**************************");
System.out.println ("Day : " + numberOfDays);
if(!aviary.isEmpty())
// Ask the cage to supply its budgie object
Budgie theBudgie = aviary.getBudgie();
/* Check there really is a Bird in the cage. null means that there is no
* bird object assigned to the myBudgie variable in class cage.
if(theBudgie != null)
// Code moved from below. PR
// Budgie gets older because a day has gone by.
theBudgie.incAge();
// Budgie exercises every day PR
theBudgie.exercise(DAILY_EXERCISE);
// Feed the budgie
// To avoid feeding nothing, check that food is given PR
// Also rejects negative feed!
if(amtFeed > 0)
theBudgie.eat(amtFeed);
System.out.println("Just been fed " + amtFeed + " grams of bird seed");
// Check if the budgie is still alive
if(theBudgie.isDead())
System.out.println(theBudgie.getName() + " just died...sob");
System.out.println("Here lies " + theBudgie.getName() + " this budgie was much loved by its " +
theBudgie.getNumEggsLaid() + " eggy ofspring");
aviary.removeBudgie();
// If alive is it overweight?
else if(theBudgie.isObese())
System.out.println(theBudgie.getName() + " is obese it needs some exercise");
theBudgie.exercise(10);
else // Budgie is alive and not overweight
System.out.println(theBudgie.toString());
// The budgie gets a day older
// theBudgie.incAge(); // Moved to above PR
// The budgie may lay an egg
if(theBudgie.layEgg(r))
System.out.println(theBudgie.getName() + " has just laid an egg ");
System.out.println("The egg has been removed from the cage for artificial incubation \n"
+ "and will be adopted out after hatching");
else // No budgie in the cage
System.out.println("The cage is empty");
* Simulate several days without food.
* @param numDays, the length of the simulation
public void simulateDays(int numDays)
for(int i = 0; i < numDays; i++)
simulateDay(0); // PR
* Simulate several days with food.
* @param numDays, the length of the simulation
* @param amtFeed, the amount of budgie food in grammes
public void simulateDays(int numDays, int gmsSeed)
for(int i = 0; i < numDays; i++)
simulateDay(gmsSeed);
}This code is supposed to be compatible with this code:
public Budgie(String name, boolean female) // Added gender PR
// Initialise instance variables
age = 0;
colour = "green"; // Default colour
canTalk = false; // Cannot talk yet, can only go "cheep"
// Quotes removed PR
budgiesWords = "cheep";
weight = 25; // In healthy weight range
bIsFemale = female; // PR
water = 10;
// Record supplied name
this.name = name;
* Teaches a budgie to talk
* @param phrase - what the budgie can say
public void teachToTalk(String phrase)
// Ignore an empty string
if(phrase != "")
// Budgie can now talk
canTalk = true;
budgiesWords = phrase;
* Increments a budgie's age by a day
public void incAge()
age++;
* The budgie is dead if it is too old or too fat or starved or too thirsty.
public boolean isDead()
return (diedOfOldAge() || diedFromOverFeeding() || isStarved() || diedOfThirst());
* The budgie is too old if it is older than the budgie's maximum age.
public boolean diedOfOldAge()
return (age > MAX_AGE);
* The budgie is too thirsty if it is has less than 10mls of water.
public boolean diedOfThirst()
return (water < MIN_DRINK);
* The budgie is too heavy to live if it is more than double a
* budgie's sensible weight limit.
public boolean diedFromOverFeeding()
return (weight >= TOO_FAT*2);
* The budgie is obese if it is more than a budgie's sensible
* weight limit.
public boolean isObese()
return (weight >= TOO_FAT);
* The budgie is starved if it is less than a budgie's sensible
* minimum weight.
public boolean isStarved()
return (weight <= TOO_THIN);
* The budgie has been fed. It will put on weight.
* @param gmsOfBirdFeed, the amount of food eaten in grammes
public void eat(int gmsOfBirdFeed)
// Convert to gms fat
double fat = gmsOfBirdFeed/10.0;
weight = weight + fat;
* The budgie has drunk.
* @param mlsofwater, the amount of water drunk in mls
public void drink(int mlsOfWater)
water = mlsOfWater;
* The budgie has done some exercise. It will lose weight.
* @param minutesOfExercise, the time of the exercise
public void exercise(int minutesOfExercise)
double weightLoss = minutesOfExercise * 0.1; // For each minute lose 0.1 gms fat
weight -= weightLoss;
System.out.println("Budgie exercising for " + minutesOfExercise + " minutes, has lost " + weightLoss + " grammes in weight." );
* The budgie may lay an egg. Only adults can lay eggs.
* @param rnd, a random object
public boolean layEgg(Random rnd)
boolean bLaying = false; // default
// Only hens can lay eggs // PR
if(bIsFemale)
int probability = rnd.nextInt(10);
// Random chance that it will lay
// Added that cannot lay if last egg laid yesterday PR
if((probability >= 5) && (age > ADULT_AGE ) && (age - lastEgg != 1))
// Can only lay eggs if a grown-up
numEggsLaid++;
bLaying = true;
lastEgg = age; // Laid an egg today PR
return bLaying;
* The budgie talks - display its words.
public void talk()
System.out.println(budgiesWords);
* Change the colour of the budgie.
* @param newColour, new value of budgie's colour
public void setColor(String newColour)
colour = newColour;
* Return the colour of the budgie.
* @return budgie's colour
public String getColour()
return colour;
* Output the budgie's details.
* @return A string containing all details of the budgie
public String toString()
String msg = "Budgie " + name + " ";
if(canTalk)
msg += "can talk it says ";
else
msg += "can not talk it just makes the sound ";
msg += "'" + budgiesWords + "'";
msg += "\n";
msg += " Its colour is : " + colour;
msg += "\n Its age is : " + age + " days.";
return msg;
* Return the number of eggs the budgie has laid.
* @return eggs laid by budgie
public int getNumEggsLaid()
return numEggsLaid;
* Return the budgie's age.
* @return age of budgie
public int getAge()
return age;
* Return the budgie's name.
* @return name of budgie
public String getName()
return name;
* Return the budgie's gender.
* @return true if budgie is female
public boolean isFemale()
return bIsFemale;
But everytime I try to compile it highlight this bit in the simulator:Budgie theBudgie = aviary.getBudgie();With an error message:
getBudgie in Aviary cannot be applied to ()
Im sorry for the long post please help would be most apreciated.
NO prob man thank for such a quick response
import java.util.ArrayList;
* A Aviary for budgies to live in.
* A maximum of one budgie can live in aviary
* @author (Jacqui Whalley)
* Modified by Phil Robbins
* @version (v0.2)
* 9-3-2006 Fixed bugs from stage 1.
* Added stage 2 code
public class Aviary
// Instance variables
private ArrayList budgies; // The budgies that live in the aviary
// private boolean empty; // Removed PR
* Constructor for objects of class aviary.
public Aviary()
//empty = true; // removed PR
budgies = new ArrayList(); // Semi colon added PR
* Add a budgie to the aviary.
* @param bird, the budgie to add to the aviary.
public void addBudgie(Budgie bird)
// Can only have one budgie
budgies.add(bird);
* Remove the budgie - eg if it has died.
public void removeBudgie(int index)
if (index <= budgies.size() && index > 0)
// Can only remove if there is a budgie there
budgies.remove(index);
else
System.out.println("Error");
* Returns the Aviary's budgie (which my be null).
* @return The budgie that lives in the Aviary
public void getBudgie(int index)
if (index <= budgies.size() && index > 0)
// Can only remove if there is a budgie there
System.out.println(budgies.get(index));
else
System.out.println("Error");
* Returns true if the cage is Aviary.
* @return the emptiness of the Aviary
public boolean isEmpty()
//return empty; // Removed PR
return budgies.size() == 0;
* List budgies and there details
public void listBudgieDetails()
for(int i = 0;i < budgies.size();i++)
System.out.println(budgies.get(i));
}
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