Bukkit

What steps will reproduce the problem?
1. Add stock to game
2. Try to buy stock
3. Get a glorious message in console and nothing in game

What is the expected output? What do you see instead?
It was supposed to give me stock

Do you have an error log of what happened?

27.12 17:27:46 [Server] INFO [17:27:46 WARN]:     at java.lang.Thread.run(Unknown Source)
27.12 17:27:46 [Server] INFO [17:27:46 WARN]:     at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
27.12 17:27:46 [Server] INFO [17:27:46 WARN]:     at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
27.12 17:27:46 [Server] INFO [17:27:46 WARN]:     at me.blockcat.stockcraft.StockCraftPlayerListener$1.run(StockCraftPlayerListener.java:38)
27.12 17:27:46 [Server] INFO [17:27:46 WARN]:     at me.blockcat.stockcraft.StockCraftCommands.infosystem(StockCraftCommands.java:262)
27.12 17:27:46 [Server] INFO [17:27:46 WARN]:     at me.blockcat.stockcraft.stockbuy.stockbuycommand(stockbuy.java:31)
27.12 17:27:46 [Server] INFO [17:27:46 WARN]:     at java.lang.Float.valueOf(Unknown Source)
27.12 17:27:46 [Server] INFO [17:27:46 WARN]:     at sun.misc.FloatingDecimal.readJavaFormatString(Unknown Source)
27.12 17:27:46 [Server] INFO [17:27:46 WARN]: java.lang.NumberFormatException: For input string: "null"
27.12 17:27:46 [Server] INFO [17:27:46 WARN]: Exception in thread "pool-6-thread-4"
27.12 17:27:24 [Server] INFO [17:27:24 WARN]:     at java.lang.Thread.run(Unknown Source)
27.12 17:27:24 [Server] INFO [17:27:24 WARN]:     at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
27.12 17:27:24 [Server] INFO [17:27:24 WARN]:     at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
27.12 17:27:24 [Server] INFO [17:27:24 WARN]:     at me.blockcat.stockcraft.StockCraftPlayerListener$1.run(StockCraftPlayerListener.java:38)
27.12 17:27:24 [Server] INFO [17:27:24 WARN]:     at me.blockcat.stockcraft.StockCraftCommands.infosystem(StockCraftCommands.java:262)
27.12 17:27:24 [Server] INFO [17:27:24 WARN]:     at me.blockcat.stockcraft.stockbuy.stockbuycommand(stockbuy.java:31)
27.12 17:27:24 [Server] INFO [17:27:24 WARN]:     at java.lang.Float.valueOf(Unknown Source)
27.12 17:27:24 [Server] INFO [17:27:24 WARN]:     at sun.misc.FloatingDecimal.readJavaFormatString(Unknown Source)
27.12 17:27:24 [Server] INFO [17:27:24 WARN]: java.lang.NumberFormatException: For input string: "null"
27.12 17:27:24 [Server] INFO [17:27:24 WARN]: Exception in thread "pool-6-thread-3"
27.12 17:25:34 [Server] INFO [17:25:34 INFO]: [TeslaCraft News] We have a Teamspeak 3 server, come and join! ts.teslacraft.us
27.12 17:24:25 [Server] INFO [17:24:25 WARN]:     at java.lang.Thread.run(Unknown Source)
27.12 17:24:25 [Server] INFO [17:24:25 WARN]:     at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
27.12 17:24:25 [Server] INFO [17:24:25 WARN]:     at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
27.12 17:24:25 [Server] INFO [17:24:25 WARN]:     at me.blockcat.stockcraft.StockCraftPlayerListener$1.run(StockCraftPlayerListener.java:38)
27.12 17:24:25 [Server] INFO [17:24:25 WARN]:     at me.blockcat.stockcraft.StockCraftCommands.infosystem(StockCraftCommands.java:262)
27.12 17:24:25 [Server] INFO [17:24:25 WARN]:     at me.blockcat.stockcraft.stockbuy.stockbuycommand(stockbuy.java:31)
27.12 17:24:25 [Server] INFO [17:24:25 WARN]:     at java.lang.Float.valueOf(Unknown Source)
27.12 17:24:25 [Server] INFO [17:24:25 WARN]:     at sun.misc.FloatingDecimal.readJavaFormatString(Unknown Source)
27.12 17:24:25 [Server] INFO [17:24:25 WARN]: java.lang.NumberFormatException: For input string: "null"
27.12 17:24:25 [Server] INFO [17:24:25 WARN]: Exception in thread "pool-6-thread-1"
27.12 17:24:04 [Server] INFO [17:24:04 WARN]:     at java.lang.Thread.run(Unknown Source)
27.12 17:24:04 [Server] INFO [17:24:04 WARN]:     at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
27.12 17:24:04 [Server] INFO [17:24:04 WARN]:     at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
27.12 17:24:04 [Server] INFO [17:24:04 WARN]:     at me.blockcat.stockcraft.StockCraftPlayerListener$1.run(StockCraftPlayerListener.java:38)
27.12 17:24:04 [Server] INFO [17:24:04 WARN]:     at me.blockcat.stockcraft.StockCraftCommands.infosystem(StockCraftCommands.java:249)
27.12 17:24:04 [Server] INFO [17:24:04 WARN]:     at me.blockcat.stockcraft.ids.idscommand(ids.java:104)
27.12 17:24:04 [Server] INFO [17:24:04 WARN]:     at me.blockcat.stockcraft.StockCraftDatabase.getcourse(StockCraftDatabase.java:96)
27.12 17:24:04 [Server] INFO [17:24:04 WARN]:     at me.blockcat.stockcraft.StockCraftDatabase.linksFromWebsite2(StockCraftDatabase.java:73)
27.12 17:24:04 [Server] INFO [17:24:04 WARN]: java.lang.ClassCastException: org.json.simple.JSONObject cannot be cast to org.json.simple.JSONArray

Also - Some commands point to google finance and some to yahoo? Its Confusing. and could you make a wiki?