A stock auction simulator. Built to simulate the buying and selling of a single stock, auction style. Stocks are sold based on lowest price order, with earliest submission used as a tie-breaker. Purchases are made based on earliest submission. Stock offers are considered until they run out, or until their owner runs out. Purchases are made until a bid is fulfilled or there are no offers left to satisfy it.

Built to consider input across a length of time, so the appropriate methods should be thread-safe. By default, it will spawn 3 client threads with 100 of the individual stock to trade. They will each have a pseudo-random bid and offer applied (see usage below).

Usage: AuctionClientSpawner should be run to test the output of 3 random clients. You can change their bids in AuctionClient.run(), or instantiate more clients with unique names to test additional users.

Sample output: BIDS OWNER QUANTITY PRICE bob 69 43 steve 62 70 ned 89 52 OFFERS OWNER QUANTITY PRICE ned 7 0 bob 13 34 steve 54 34 Cross found, bob buys 7 from ned at 0 per share Cross found, bob buys 54 from steve at 34 per share Cross found, ned buys 13 from bob at 34 per share