1 files changed, 12 insertions, 5 deletions
diff --git a/src/de/fhswf/in/inf/java1/aufgabe12/UpnMain.java b/src/de/fhswf/in/inf/java1/aufgabe12/UpnMain.java
index 9d056a6..30c3204 100644
--- a/src/de/fhswf/in/inf/java1/aufgabe12/UpnMain.java
+++ b/src/de/fhswf/in/inf/java1/aufgabe12/UpnMain.java
@@ -30,12 +30,19 @@ public final class UpnMain
    {
 
       UPN test = new UPN();
-      
-      test.calculate("5 3 - 2 * 10 9 - / 10 6 - 8 6 - 2 * / -");
-      System.out.println(test.getResult());
-      test.calculate("-3.1415 abs");
-      System.out.println(test.getResult());
 
+      try
+      {
+         test.calculate("5 3 - 2 * 10 9 - / 10 6 - 8 6 - 2 * / -");
+         System.out.println(test.getResult());
+         test.calculate("-3.1415 abs cos");
+         System.out.println(test.getResult());
+      }
+      catch (IllegalArgumentException e)
+      {
+         System.err
+               .println("UPN string encountered error: " + e.getMessage());
+      }
    }
 
 }