Create 57_javaBeginners.java

Java_Beginners/59_javaBeginners.java

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+// apples.java file
+
+class Apples{
+	public static void main(String[] args){
+
+		DogList DLO = new DogList();
+		Dog d = new Dog();
+		DLO.add(d);
+	}
+}
+
+//Dog.java file
+
+public class Dog extends Animal{
+
+}
+
+//Fish.java file
+
+public class Fish extends Animal{
+
+}
+
+//Animal.java file
+
+public class Animal{
+
+}
+
+//DogList.java file
+
+public class DogList{
+	private Dog[] thelist = new Dog[5];
+	private int i=0;
+
+	public void add(Dog d){
+		if(i<thelist.length){
+			thelist[i]=d;
+			System.out.println("Dog added at index "+i);
+			i++;
+		}
+	}
+}

Java_Beginners/60_javaBeginners.java

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+// apples.java file
+
+class Apples{
+	public static void main(String[] args){
+
+		AnimalList ALO = new AnimalList();
+		Dog d = new Dog();
+		Fish f = new Fish();
+		ALO.add(d);
+		ALO.add(f);
+	}
+}
+
+//Dog.java file
+
+public class Dog extends Animal{
+
+}
+
+//Fish.java file
+
+public class Fish extends Animal{
+
+}
+
+//Animal.java file
+
+public class Animal{
+
+}
+
+//AnimalList.java file
+
+public class AnimalList{
+
+	private Animal[] thelist = new Animal[5];
+	private int i = 0;
+
+	public void add(Animal a){
+		if(i<thelist.length){
+			thelist[i]=a;
+			System.out.println("Animal added at index "+a);
+			i++;
+		}
+	}
+}