I was wondering if someone could help me with a java code I am working for class having a bit of trouble getting started and was wondering if anybody can help me through the code. If so thanks, here it is.
Overall Requirements
Write a program that simulates the battle between a cat and mice.
Use this class hierarchy:
Mammal
Mouse Cat
Cat
• Kills 1 mouse a day
• Does not reproduce
Mice
• Have a chance to reproduce as long as conditions are met
• Reproduction only happens when mice are over 1 and 1 of each sex is present
Simulation Control
• Simulation continues as long as population is greater than 1 and less than 10
Driver main method should be as shown below: (replacing comment with missing piece)
import java.util.ArrayList;
public class LastFirstWeek5CatMouse
{
public static void main(String [] args)
{
cat sylvester = new cat();
ArrayList<mouse> mice = new ArrayList<mouse>();
mice.add(new mouse());
mice.add(new mouse());
mice.add(new mouse());
mice.get(0).setSex(true);
mice.get(1).setSex(false);
mice.get(2).setSex(false);
while (mice.size() >1 && mice.size() < 10)
{
for (mouse m:mice)
m.grow();
sylvester.grow();
mouse.mate(mice);
sylvester.eat(mice);
}
//INCLUDE CODE FOR OUTPUT HERE
}
}
Output code should output:
Depending on if the population of mice is greater than or equal 10:
Mice RULE, Cats Drool Mice Population: ## (integer value)
or
Cats RULE, Mice Drool Cat Weight (in mice): ##.## (double value, 2 decimal places)
15%
Mammal.java class
Instance variables:
name (string)
age (integer)
weight (double)
isMale (Boolean)
mammal constructor : (default constructor)
Set age to 1.
grow method :
Increases age of mammal by 1.
Accessor / mutator methods for each instance variable above:
Set or returns values as appropriate for data type specified.
10%
Cat.java class
eat method: (receive mouse arraylist as argument)
Randomly removes a mouse from the population 70% of the time and increases cat weight by the chosen mouse weight. Only increase weight if mouse is removed/eaten. (See chapter 5, lottery example, for random example)
grow method:
Set the cats age to the current age plus 1. (use accessor/mutator methods)
30%
Mouse.java class
mouse constructor: (default constructor)
Randomly choose sex and assign to isMale as appropriate.
Set age to 1.
Set weight to 1.
grow method:
Increase age of mouse by 1 and weight of mouse by 1% of current weight.
mate method: (static method, receive mouse arraylist as argument)
Randomly choose 2 mice objects from arraylist and if conditions are correct, proceed with mating.
Successful mating conditions are:
• 1 male, 1 female mouse
• Both mice older than 1 day
If successful mating, randomly create between 0-4 mice and append to arraylist received as argument.
30%
Sample session (requires no user input):
Mice RULE, Cats Drool Mice Population: 11
Press any key to continue . . .
Cats RULE, Mice Drool Cat Weight (in mice): 2.03
Press any key to continue . . .
Mice RULE, Cats Drool Mice Population: 10
Press any key to continue . . .
Cats RULE, Mice Drool Cat Weight (in mice): 2.05
Press any key to continue . . .
As always, you should:
• Limit your use of class variables and instance variables – only use them if appropriate.
• Use appropriate modifiers for your methods. The modifiers we’ve discussed are private, public, static, and final.
• Use helper methods if appropriate.
• Follow the Java Coding Styles Document including comments and style
• Mimic the sample session precisely.
