1 files changed, 51 insertions, 51 deletions
diff --git a/src/de/fhswf/in/inf/java1/aufgabe12/BinaryOperator.java b/src/de/fhswf/in/inf/java1/aufgabe12/BinaryOperator.java
index ef007bd..50ac855 100644
--- a/src/de/fhswf/in/inf/java1/aufgabe12/BinaryOperator.java
+++ b/src/de/fhswf/in/inf/java1/aufgabe12/BinaryOperator.java
@@ -1,51 +1,51 @@
-/**
- * 
- */
-package de.fhswf.in.inf.java1.aufgabe12;
-
-import java.util.Stack;
-
-/**
- * An abstract class for calculations with unary operators.
- *
- * @author $Author: $
- * @version $Revision: $, $Date: $ UTC
- */
-public abstract class BinaryOperator implements Operator
-{
-   /*
-    * (non-Javadoc)
-    * 
-    * @see de.fhswf.in.inf.java1.aufgabe12.Operator#eval(java.util.Stack)
-    */
-   @Override
-   public final void eval(Stack<Double> stack)
-   {
-      if (stack == null)
-      {
-         throw new IllegalArgumentException("Stack must not be null.");
-      }
-
-      if (stack.size() < 2)
-      {
-         throw new IllegalArgumentException(
-               "Unary operation requires one operand.");
-      }
-
-      double d2 = stack.pop();
-      double d1 = stack.pop();
-
-      stack.push(eval(d1, d2));
-   }
-
-   /**
-    * This class implements the calculation.
-    *
-    * @param d1
-    *           The first operator.
-    * @param d2
-    *           The second operator.
-    * @return The result of the calculation.
-    */
-   abstract double eval(double d1, double d2);
-}
+/**
+ * 
+ */
+package de.fhswf.in.inf.java1.aufgabe12;
+
+import java.util.Stack;
+
+/**
+ * An abstract class for calculations with unary operators.
+ *
+ * @author $Author: $
+ * @version $Revision: $, $Date: $ UTC
+ */
+public abstract class BinaryOperator implements Operator
+{
+   /*
+    * (non-Javadoc)
+    * 
+    * @see de.fhswf.in.inf.java1.aufgabe12.Operator#eval(java.util.Stack)
+    */
+   @Override
+   public final void eval(Stack<Double> stack)
+   {
+      if (stack == null)
+      {
+         throw new IllegalArgumentException("Stack must not be null.");
+      }
+
+      if (stack.size() < 2)
+      {
+         throw new IllegalArgumentException(
+               "Unary operation requires one operand.");
+      }
+
+      double d2 = stack.pop();
+      double d1 = stack.pop();
+
+      stack.push(eval(d1, d2));
+   }
+
+   /**
+    * This method implements the calculation.
+    *
+    * @param d1
+    *           The first operator.
+    * @param d2
+    *           The second operator.
+    * @return The result of the calculation.
+    */
+   abstract double eval(double d1, double d2);
+}