added uebung07 angabe

uebung07/src/oop/ch05/mensa/CountCard.java

@@ -0,0 +1,15 @@
+package oop.ch05.mensa;
+
+public class CountCard extends MensaCard {
+
+  public CountCard(String key, Color color) {
+    super(key, color);
+    if (color != Color.red && color != Color.gray)
+      throw new IllegalArgumentException("Invalid CountCard color " + color);
+  }
+
+  @Override
+  public void pass(CashPoint cashPoint) {
+    cashPoint.count(this);
+  }
+}