// java classes start with public class
// must live in a file using the class name .java
// example is .txt for web page
public class Dog {

    public String name;
    public int age;
    // no * needed, ALL objects in Java are pointers
    public Dog friend;
    
	
	 	public void bark(){
			System.out.println(name + " says woof");
 		}
	
		public void birthday(){
			System.out.println("happy birthday " + name);
			age = age + 1;
			System.out.println(name + " is now " + age);
		}
	
	
    // real java class would have a method called toString for printing
}