Thread: looping through an ArrayList of objects with their own attributes

hello again,

i am trying to loop through an ArrayList of type object. the objects have their own attributes and i'm trying to call a specific method that accesses a specific attribute. in this case, the objects refer to pets and i am trying to total up their leg count in separate java files. i'll have to call this method in my tester class.

here is PetTester.java

import java.util.ArrayList;
 
/* This program tests the Pet superclass and its subclasses */
public class PetTester
{
 
	public static void main(String [] args)
	{	
		Cat spider = new Cat("Spider", "Alley","Black", "crystals", 7);
		Dog rover = new Dog("Rover", "Labrador","Chocolate", true, "large", 100);
		Dog tippi = new Dog("Tippi", "Poodle","Silver",false, "small", 15);
		Bird toucan = new Bird("Nismo", "toucan", 2, true);
 
		ArrayList<Pet> pets = new ArrayList<Pet>();
		pets.add(spider);
		pets.add(rover);
		pets.add(tippi);
		pets.add(toucan);
 
		String spiderName = spider.getName();
		String spiderLitterType = spider.getLitterType();
		String spiderColor = spider.getColor();
		String spiderBreed = spider.getBreed();
		int spiderLegs = spider.getLegs();
		System.out.println(spiderName + " who is of type " + spiderBreed + " and color " + spiderColor +
		" which uses " + spiderLitterType + " litter has " + " legs: "+ spiderLegs);
 
		String roverName = rover.getName();
		boolean roverTraining = rover.getTrained();
		String roverSize = rover.getSize();
		String roverColor = rover.getColor();
		String roverBreed = rover.getBreed();
		int roverLegs = rover.getLegs();
 
		System.out.println(roverName + " who is of type " + roverBreed + " and color " + roverColor +
		" and " + roverSize + " size which is trained " + roverTraining +
		" has " + " legs: "+ roverLegs);
 
		System.out.println(tippi.getName() + " who is of type " + tippi.getBreed() + " and color " + tippi.getColor() + " and " + tippi.getSize() +
		" size which is trained " + tippi.getTrained() + " weighs " + tippi.getWeight() + " has " + " legs: "
		+ tippi.getLegs());
 
		System.out.println(toucan.getName() + " is a " + toucan.getBreed() + " who has " + toucan.getLegs()
				+ " legs, and " + toucan.canTalk() + " talk.");
	}
}

now here is Pet.java where this method, totalLegs(ArrayList<Pet> pets) is actually created.

import java.util.ArrayList;
 
public class Pet
{
	String name;
	String breed;
	String color;
	int legs;
	int weight;
	boolean speaks;
 
	public Pet(String name, String breed, String color, int legs, int weight)
	{
		this.name = name;
		this.breed = breed;
		this.color = color;
		this.legs = legs;
		this.weight = weight;
	}
 
	public Pet(String name, String breed, String color, int weight)
	{
			this.name = name;
			this.breed = breed;
			this.color = color;
			this.legs = 4;
			this.weight = weight;
	}
 
	public Pet(String name, String breed, int legs, boolean speaks)
	{
		this.name = name;
		this.breed = breed;
		this.legs = 2;
		this.speaks = speaks;
	}
 
	public Pet()
	{
		this.name = "";
		this.breed = "mutt";
		this.color = "black";
		this.legs = 4;
		this.weight = 0;
	}
	public String getName()
	{
			return name;
	}
 
	public String getBreed()
	{
		return breed;
	}
 
	public String getColor()
	{
		return color;
	}
 
	public int getLegs()
	{
		return legs;
	}
	public int getWeight()
	{
		return weight;
	}
 
	[B]public static int totalLegs(ArrayList<Pet> pets)
	{
		int totalLegs = 0;
		for (int i = 0; i < pets.size(); i++)
		{
			totalLegs = pets.getLegs();
		}[/B]
	}
}

how do i access their parameters and add them all up?

Sure thing, but would a cat named spider have 4 or 8 legs?

Or maybe none, what with a 100 lb (kg?) dog being so near

db