public class Box<T>		// simple class to demonstrate boxing a type, passed in as T
{
	private T item;		// our instance datum, an object of type T (to be filled in as a parameter when constructed)
	
	public Box(T item)	// constructor
	{
		this.item=item;
	}
	
	public T get()		// accessor
	{
		return item;
	}
	
	public void set(T item)	// mutator
	{
		this.item=item;
	}

	public String toString()	// if T has a toString, this returns the item as a String, otherwise it will
	{							// return the memory location (or "not set" if item is null)
		if(item!=null) return ""+item;
		else return "not set";
	}

	// implements a static method assuming the T extends Number, we cover this later in the chapter
	public static <T> boolean greater(Box<? extends Number> item1, Box<? extends Number> item2)
	{
		if(item1.get().doubleValue()>item2.get().doubleValue()) return true; else return false;
	}
}