Some reformatting.

src/StockExchange/Account.java

@@ -1,25 +1,29 @@
 package StockExchange;
 
 public class Account {
-	public long shares=0;	// number of shares 
-	public double money=0;	// amount of money
+
+    /**
+     * Number of shares in this account
+     */
+    public long shares = 0;
+
+    /**
+     * Ammount of money in this account
+     */
+    public double money = 0;
+
     public String name = "";
+
     public boolean orderpending = false;
 
     private double bound_money;
 
-	
-	
-	
     public void print_current() {
         System.out.printf("%s shares: %d credit: %.2f\n",
                 name, shares, money
         );
-			
-		
     }
 
-
     public SellOrder Sell(long size, double limit, Exchange ex) {
         SellOrder o = new SellOrder();
         o.account = this;
@@ -33,8 +37,9 @@ public class Account {
     }
 
     public BuyOrder Buy(long size, double limit, Exchange ex) {
-		if (size * limit > money)
+        if (size * limit > money) {
             return null;
+        }
 
         BuyOrder o = new BuyOrder();
         o.limit = limit;
@@ -46,13 +51,11 @@ public class Account {
 
     }
 
-	public void Buy( Account a,long size, double price)
-	{
+    public void Buy(Account a, long size, double price) {
         shares += size;
         money -= price * size;
         a.shares -= size;
         a.money += price * size;
     }
 
-	
 }