Write a program to pack boxes with blobs. Write two classes and a driver program.

A Blob class

implements the following interface. (Defines the following methods.) public interface BlobInterface { /** getWeight accessor method. @return the weight of the blob as a double */ public double getWeight(); /** toString method @return a String showing the weight of the Blob */ public String toString(); }

A Blob must be between 1 and 4 pounds, with fractional weights allowed.

A default constructor creates a Blob with a weight of 2 pounds.

A one-double-parameter constructor creates a Blob with that many pounds, or throws an IllegalArgumentException if the weight is less than 1 or greater than 4 pounds.

A Box class

implements the following interface. (Note that, since the Blob class implements BlobInterface, then a Blob is a BlobInterface, so a Blob can be passed to the insert method below.) public interface BoxInterface { /** insert inserts a Blob into the box @param b the Blob to insert @return true if the blob fits, or false if it doesn't */ public boolean insert(BlobInterface b); /** remainingCapacity accessor method @return the remaining capacity of the box (how many more pounds it can hold). */ public double remainingCapacity(); /** toString @return a String listing all of the Blobs in the Box, followed by the total weight */ public String toString(); }

A default constructor gives a Box capable of holding up to 25 pounds of Blobs.

An one-int-parameter constructor creates a Box capable of holding that number of pounds, but throws an IllegalArgumentException for 0 or negative arguments.

The driver program should

Instantiate 5 25-pound-capacity Boxes and

30 Blobs with weights that are random doubles from 1 to 4 (Math.random()*3+1).

Put the 30 Blobs into the boxes, filling the first box, then the second, etc., and then printing out each box.

Every Blob that is instantiated must be inserted into a Box.

The driver may be a console or GUI application.

Note that the driver program might not use some of the methods or constructors. You should define them anyway. Also, use ArrayLists rather than arrays.