hieman parempi poikkeusten käsittely

src/cowhello/ConsoleProcess.java

@@ -18,16 +18,18 @@ public class ConsoleProcess extends Thread{
     private PrintStream output;
     private Scanner input;
     private Commands komennot;
-    
+    private String prompt;
     /**
      * initializes the class
      * @param in Stream that the thread will read from
      * @param out Stream that the thread will write into
+     * @param prompt What gets displayed in the stream for prompt, eg "console>"
      */
-    public ConsoleProcess(InputStream in, OutputStream out) {
+    public ConsoleProcess(InputStream in, OutputStream out, String prompt) {
         this.output = new PrintStream(out);
         this.input = new Scanner(in);
         komennot = new Commands();
+        this.prompt = prompt+">";
     }
     
     /**
@@ -36,14 +38,10 @@ public class ConsoleProcess extends Thread{
     @Override
     public void run() {
         while (true) {
-            output.print("Cowhello>");
+            output.print(prompt);
             String syote = input.nextLine();
             if (syote.equals("")) continue;
-            try {
-            	exec(syote);
-            } catch (Exception e) {
-            	puhu(e,"Virhe komennon kanssa: "+e.getMessage());
-            }
+            exec(syote);
         }
     }
  
@@ -91,7 +89,11 @@ public class ConsoleProcess extends Thread{
     
     private void exec(String a) {
         String[] jutut = a.split(" ");
-        komennot.exec(output,jutut);
-        
+        try {
+        	komennot.exec(output,jutut);
+        } catch (Exception e) {
+        	puhu(e,"Virhe komennon kanssa: "+e.getMessage());
+        	komennot.exec(output, new String[]{"help", jutut[0] });
+        }
     }
 }