add class Cat and test class

src/Cat.java

+
+public class Cat extends Pet {
+
+	public Cat() {
+		super();
+		// TODO Auto-generated constructor stub
+	}
+
+	public Cat(String name, String color) {
+		super(name, color);
+		// TODO Auto-generated constructor stub
+	}
+
+	@Override
+	public String voice() {
+		// TODO Auto-generated method stub
+		return "Meow Meow";
+	}
+	
+	
+
+}

src/Main.java

@@ -2,7 +2,7 @@
 public class Main {
 
 	public static void main(String[] args) {
-		Pet p = new Dog("Bew","Red");
+		Pet p = new Cat("Bew","Red");
 		System.out.print("Pet name is "+p.getName()+" color is "+p.getColor()+" sound is "+p.voice());
 
 	}