How Do I code in java?Farmanimals : Animal [ ] farmName : StringnumAnimals : int //calculated controlled variable no setter Farm() //default 10 animals Farm(String) //default 10 animals Farm(int) //size of arrayFarm(String, int) addAnimal(Animal) : voidgetFarmName() : StringsetFarmName(String) : voidgetAnimal(int) : Animal //return null if index is invalidgetNumAnimals() : int //notice no setter… this is a controlled variablegetFirstAnimal() : AnimalgetLastAnimal() : AnimalgetAnimals() : Animal[ ]printAllDetails() : void // prints Farm attributes followed by Animal attributes as formatted below : // "FarmName: %20s | Number of Animals: %4d | Farm Size: %4d\n" // "Name: %20s | Year of Birth: %4d | Weight: %10.2f | Gender: %c\n"removeAnimal(int) : AnimalremoveAllAnimals() : voidgetTotalWeightOfAllAnimals() : doublegetAverageWeightOfAllAnimals() : doublegetNumberOfAnimalsAboveWeight(double) : intgetNumberOfAnimalsBelowWeight(double) : intincreaseWeightOfAllAnimals() : voidincreaseWeightOfAllAnimals(double) : void

Coded using Java.public class Farm{ private String farmName; private Animal[] animals; private int numAnimals; // public static void main(String[] args){ // Farm farm = new Farm(); // Animal lion = new Animal("lion", 1999, 12, 'f'); // farm.printAllDetails(); // } public static void main(String[] args){ Farm[] farm = new Farm[10]; Animal lion = new Animal("lion", 1999, 12, 'f'); lion.printDetails(); farm[0] = new Farm(); farm[0].addAnimal(lion); } public Farm(){ animals = new Animal[10]; farmName = ""; numAnimals = 0; } public Farm(String farmName){ this.farmName = farmName; animals = new Animal[10]; numAnimals = 0; } public Farm(int maxAnimals){ animals = new Animal[maxAnimals > 0 ? maxAnimals : 0]; farmName = ""; numAnimals = 0; } public Farm(java.lang.String farmName, int maxAnimals){ this.farmName = farmName; animals = new Animal[maxAnimals > 0 ? maxAnimals : 0]; numAnimals = 0; } public void setFarmName(String name){ farmName = name; } public String getFarmName(){ return farmName; } public void addAnimal(Animal a){ if (numAnimals >= animals.length){ //resizeAnimalArray(); } animals[numAnimals] = a; numAnimals += 1; } public Animal getAnimal(int index){ if (index > numAnimals || index < 0){ return null; } else { return animals[index]; } } public int getNumAnimals(){ return numAnimals; } public Animal getFirstAnimal(){ return getAnimal(0); } public Animal getLastAnimal(){ return getAnimal(numAnimals-1); } public Animal[] getAnimals(){ return animals; } public Animal removeAnimal(int index){ Animal removedAnimal = null; if (index >= 0 && index < numAnimals){ removedAnimal = animals[index]; for (int i = index; i < numAnimals - 1; i++){ animals[i] = animals[i+1]; } animals[numAnimals-1] = null; numAnimals -= 1; } return removedAnimal; } public void removeAllAnimals(){ for (int i = 0; i < numAnimals; i++){ animals[i] = null; } numAnimals = 0; } public double getTotalWeightOfAllAnimals(){ double sum = 0.0; for (int i = 0; i < numAnimals; i++){ Animal a = animals[i]; sum += a.getWeight(); } return sum; } public double getAverageWeightOfAllAnimals(){ double sum = getTotalWeightOfAllAnimals(); return sum / numAnimals; } public int getNumberOfAnimalsAboveWeight(double weight){ int numOfAboveAvg = 0; for (int i = 0; i < numAnimals; i++){ if (animals[i].getWeight() > weight){ numOfAboveAvg++; } } return numOfAboveAvg; } public int getNumberOfAnimalsBelowWeight(double weight){ int numOfBelowAvg = 0; for (int i = 0; i < numAnimals; i++){ if (animals[i].getWeight() < weight){ numOfBelowAvg++; } } return numOfBelowAvg; } public void increaseWeightOfAllAnimals(){ for (int i = 0; i < numAnimals; i++){ animals[i].gainWeight(); } } public void increaseWeightOfAllAnimals(double weight){ for (int i = 0; i < numAnimals; i++){ animals[i].gainWeight(weight); } } public void printAllDetails(){ int length = animals.length; System.out.printf("FarmName: %20s | Number of Animals: %4d | Farm Size: %4d\n", farmName, numAnimals, length); for (int i = 0; i < numAnimals; i++){ animals[i].printDetails(); } } }

Answered: How Do I code in java? Farm animals :…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question

How Do I code in java?

Farm

animals : Animal [ ]
farmName : String
numAnimals : int //calculated controlled variable no setter

Farm() //default 10 animals
Farm(String) //default 10 animals
Farm(int) //size of array
Farm(String, int)

addAnimal(Animal) : void
getFarmName() : String
setFarmName(String) : void
getAnimal(int) : Animal //return null if index is invalid
getNumAnimals() : int //notice no setter… this is a controlled variable
getFirstAnimal() : Animal
getLastAnimal() : Animal
getAnimals() : Animal[ ]
printAllDetails() : void // prints Farm attributes followed by Animal attributes as formatted below :

// "FarmName: %20s | Number of Animals: %4d | Farm Size: %4d\n"

// "Name: %20s | Year of Birth: %4d | Weight: %10.2f | Gender: %c\n"

removeAnimal(int) : Animal
removeAllAnimals() : void
getTotalWeightOfAllAnimals() : double
getAverageWeightOfAllAnimals() : double
getNumberOfAnimalsAboveWeight(double) : int
getNumberOfAnimalsBelowWeight(double) : int
increaseWeightOfAllAnimals() : void
increaseWeightOfAllAnimals(double) : void

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