final commit with all working methods and comments to show

ZooProgram/src/Zoo.java

 import java.util.ArrayList;
 
 public class Zoo {
+    //Stores a list of animals within the zoo
     private ArrayList<Animal> animalArrayList= new ArrayList<>();
 
     public ArrayList<Animal> getanimalArrayList(){
@@ -21,12 +22,14 @@ public class Zoo {
         System.out.println(animal.getFoodType());
     }
 
+    //displays the food required for all animals in an ArrayList
     public void displayfoodListRequirements(ArrayList<Animal>animalList){
         for (int i=0; i < animalList.size();i++){
             System.out.println(animalList.get(i).getFoodType());
         }
     }
 
+    //displays the details of a single animal
     public void displayDetails(Animal animal){
         ArrayList<String> detailList=animal.getDetails();
         for(int i = 0; i < detailList.size();i++){
@@ -34,12 +37,14 @@ public class Zoo {
         }
     }
 
+    //displays the details of each animal in an arrayList
     public void displayListDetials(ArrayList<Animal>animalList){
         for (int i=0; i < animalList.size();i++){
             displayDetails(animalList.get(i));
         }
     }
 
+    //displays all animals from a specific environment 
     public void displayEnvironmentList(String environment){
         for (int i=0; i < animalArrayList.size();i++){
             if(animalArrayList.get(i).getEnvironment() == environment){
@@ -48,20 +53,25 @@ public class Zoo {
         }
     }
 
-    //WIP animal type, get class
+    //creates and displays an arrayList of animals of a particular type 
     public void displayAnimalType(String animalType){
+        ArrayList<Animal> typeArrayList = new ArrayList<>();
         for (int i=0; i < animalArrayList.size();i++){
             if(animalArrayList.get(i) instanceof Mammal && animalType == "Mammal"){
                 System.out.println(animalArrayList.get(i).getName());
+                typeArrayList.add(animalArrayList.get(i));
             }
             if(animalArrayList.get(i) instanceof Bird && animalType == "Bird"){
                 System.out.println(animalArrayList.get(i).getName());
+                typeArrayList.add(animalArrayList.get(i));
             }
             if(animalArrayList.get(i) instanceof Reptile && animalType == "Reptile"){
                 System.out.println(animalArrayList.get(i).getName());
+                typeArrayList.add(animalArrayList.get(i));
             }
             if(animalArrayList.get(i) instanceof Fish && animalType == "Fish"){
                 System.out.println(animalArrayList.get(i).getName());
+                typeArrayList.add(animalArrayList.get(i));
             }
         }
     }