Added Pets

.gitignore

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+/.idea/
+README.md
+pointer-pet.iml

com/src/Cat.java

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+package src;
+
+public class Cat extends Pet {
+    @Override
+    void voice() {
+        System.out.println("Я кіт- Мяууу-Мяууу ");
+    }
+}

com/src/Cow.java

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+package src;
+
+public class Cow extends Pet {
+    @Override
+    void voice() {
+        System.out.println(" Я корова- Мууу-Мууу");
+    }
+}

com/src/Dog.java

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+package src;
+
+public class Dog extends Pet {
+    @Override
+    void voice() {
+        System.out.println("Я пес- Гаууу-Гаууу ");
+    }
+}

com/src/Main.java

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+package src;
+
+public class Main {
+    public static void main(String[] args) {
+        Dog dog= new Dog();
+        Cat cat = new Cat();
+        Cow cow = new Cow();
+        cat.voice();
+        cow.voice();
+        dog.voice();
+
+
+    }
+}

com/src/Pet.java

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+package src;
+
+public abstract class Pet {
+    abstract void voice();
+}
+

pointer-pet.iml

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+<?xml version="1.0" encoding="UTF-8"?>
+<module type="WEB_MODULE" version="4">
+  <component name="NewModuleRootManager" inherit-compiler-output="true">
+    <exclude-output />
+    <content url="file://$MODULE_DIR$">
+      <sourceFolder url="file://$MODULE_DIR$/com" isTestSource="false" />
+    </content>
+    <orderEntry type="inheritedJdk" />
+    <orderEntry type="sourceFolder" forTests="false" />
+  </component>
+</module>