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GRÜN: Erwartungen implementiert
[demos/kafka/training]
/
src
/
main
/
java
/
de
/
juplo
/
kafka
/
AdderBusinessLogic.java
diff --git
a/src/main/java/de/juplo/kafka/AdderBusinessLogic.java
b/src/main/java/de/juplo/kafka/AdderBusinessLogic.java
index
a3848c4
..
9fd5b0d
100644
(file)
--- a/
src/main/java/de/juplo/kafka/AdderBusinessLogic.java
+++ b/
src/main/java/de/juplo/kafka/AdderBusinessLogic.java
@@
-3,6
+3,7
@@
package de.juplo.kafka;
import java.util.HashMap;
import java.util.Map;
+import java.util.Optional;
public class AdderBusinessLogic
@@
-28,4
+29,9
@@
public class AdderBusinessLogic
state.put(user, 0l);
}
+
+ public synchronized Optional<Long> getSum(String user)
+ {
+ return Optional.ofNullable(state.get(user));
+ }
}