Reformatted and commented code.

src/StockExchange/Order.java

@@ -3,14 +3,22 @@ package StockExchange;
 public abstract class Order implements Comparable<Order> {
 
     /**
-     * when
+     * When the order was created
      */
     public long timestamp = 0;
+
+    /**
+     * Number of shares
+     */
     public long size;
+
+    /**
+     * Limit price
+     */
     public double limit;
-//	long time;
-    double money = 0;
-//	public long shares=0;
+
+ //   double money = 0;
+
     public long id = 0;
     public Account account = null;
 

src/StockExchange/RandomTrader.java

@@ -14,41 +14,40 @@ public class RandomTrader extends ThreadedTrader{
     // my current order
     private Order myorder = null;
 
-
     public RandomTrader(Exchange ex, long shares, double money) {
         account.money = money;
         account.shares = shares;
         this.ex = ex;
     }
 
-	public void DoBuy()
-	{
+    public void DoBuy() {
 
-		if (myorder!=null)
+        if (myorder != null) {
             return;
+        }
 
-		if (account.money <= 0)
+        if (account.money <= 0) {
             return;
+        }
 
         double perc = rand.nextDouble() * 1.0;
         double lp = ex.lastprice;
         double limit = lp / 100 * perc + lp;
 
-
         long size = (int) (account.money / (limit * 1));
 
-					
         myorder = account.Buy(size, limit, ex);
         return;
     }
 
-	public void DoSell()
-	{
-		if (myorder!=null)
+    public void DoSell() {
+        if (myorder != null) {
             return;
+        }
 
-		if (account.shares<=0)
+        if (account.shares <= 0) {
             return;
+        }
 
         double perc = rand.nextDouble() * 1.0;
         double lp = ex.lastprice;
@@ -56,20 +55,14 @@ public class RandomTrader extends ThreadedTrader{
 
         long size = (int) (account.shares);
 
-					
         myorder = account.Sell(size, limit, ex);
     }
 
-	
-	
-	
     public void trade() {
 
-		if (myorder != null)
-		{
+        if (myorder != null) {
             long age = myorder.getAge();
-			if (myorder.status == OrderStatus.executed)
-			{
+            if (myorder.status == OrderStatus.executed) {
                 myorder = null;
                 //		System.out.println(name);
                 //		System.out.println("----------------------");
@@ -77,7 +70,6 @@ public class RandomTrader extends ThreadedTrader{
                 return;
             }
 
-			
             if (myorder.getAge() > 10) {
                 //System.out.println("Shall cancel now");
                 //System.out.println(myorder.status);
@@ -89,11 +81,6 @@ public class RandomTrader extends ThreadedTrader{
             return;
         }
 
-		
-		
-		
-		
-			
         // What to do?
         int action = rand.nextInt(3);
         /*		System.out.print(name);
@@ -108,19 +95,16 @@ public class RandomTrader extends ThreadedTrader{
 		}
          */
 
-		if (action == 1)
-		{
+        if (action == 1) {
             DoBuy();
             return;
         }
 
-		if (action == 2)
-		{
+        if (action == 2) {
             DoSell();
             return;
         }
 
-		
     }
 
     /*	public void run(){
@@ -141,6 +125,4 @@ public class RandomTrader extends ThreadedTrader{
 	}
 	
      */
-	
 }
-

src/StockExchange/ThreadedTrader.java

@@ -10,17 +10,14 @@ public abstract class  ThreadedTrader extends Thread implements Trader {
     }
 
     public void run() {
-		while (true)
-		{
+        while (true) {
             try {
                 sleep(sleeptime);
-			}
-			catch(InterruptedException e) {
+            } catch (InterruptedException e) {
                 System.out.println("Interrupted");
             }
             trade();
         }
     }
 
-
 }

src/StockExchange/Trader.java

@@ -1,8 +1,9 @@
 package StockExchange;
 
-
 public interface Trader {
+
     String name = null;
+
     public void trade();
     public Account account = new Account();
 //	public Exchange ex=null;

src/StockExchange/TraderRun.java

@@ -1,16 +1,16 @@
 package StockExchange;
 
 public class TraderRun extends Thread {
+
     public String tname = "";
     public Exchange ex;
 
+    @Override
     public void run() {
-		while (true)
-		{
+        while (true) {
             try {
                 sleep(100);
-			}
-			catch(InterruptedException e) {
+            } catch (InterruptedException e) {
                 System.out.println("Interrupted");
             }
 
@@ -30,7 +30,6 @@ public class TraderRun extends Thread{
 //			ex.Free();
 			System.out.printf("%s unlocked\n", tname);
              */
-			
         }
     }