diff --git a/java/src/mimis/Application.java b/java/src/mimis/Application.java
index 09330b5..88da586 100644
--- a/java/src/mimis/Application.java
+++ b/java/src/mimis/Application.java
@@ -4,6 +4,7 @@ import mimis.event.EventHandler;
 import mimis.event.Task;
 import mimis.exception.WorkerException;
 import mimis.exception.worker.DeactivateException;
+import mimis.manager.Exitable;
 import mimis.manager.Titled;
 import mimis.value.Action;
 
diff --git a/java/src/mimis/Device.java b/java/src/mimis/Device.java
index 2d7c23f..affdde9 100644
--- a/java/src/mimis/Device.java
+++ b/java/src/mimis/Device.java
@@ -8,6 +8,7 @@ import mimis.macro.Sequence;
 import mimis.macro.SequenceListener;
 import mimis.macro.State;
 import mimis.macro.state.Press;
+import mimis.manager.Exitable;
 import mimis.manager.Titled;
 
 public abstract class Device extends EventHandler implements Titled, Exitable {
diff --git a/java/src/mimis/Manager.java b/java/src/mimis/Manager.java
index d4d74a4..0192eb6 100644
--- a/java/src/mimis/Manager.java
+++ b/java/src/mimis/Manager.java
@@ -6,6 +6,7 @@ import java.util.Map;
 
 import javax.swing.JButton;
 
+import mimis.manager.Exitable;
 import mimis.manager.SelectButton;
 import mimis.manager.Titled;
 
diff --git a/java/src/mimis/event/EventHandler.java b/java/src/mimis/event/EventHandler.java
index b4e1ddf..14ab1bd 100644
--- a/java/src/mimis/event/EventHandler.java
+++ b/java/src/mimis/event/EventHandler.java
@@ -21,8 +21,18 @@ public abstract class EventHandler extends EventListener {
     protected void feedback(Feedback feedback) {}
 
     protected void task(Task task) {
-        action(task.getAction());
+        Action action = task.getAction();
+        switch (task.getSignal()) {
+            case BEGIN:
+                begin(action);
+                break;
+            case END:
+                end(action);
+                break;
+        }
     }
 
+    protected void begin(Action action) {}
+    protected void end(Action action) {}
     protected void action(Action action) {}
 }
\ No newline at end of file
diff --git a/java/src/mimis/event/Task.java b/java/src/mimis/event/Task.java
index ae5cadd..f4ee9c6 100644
--- a/java/src/mimis/event/Task.java
+++ b/java/src/mimis/event/Task.java
@@ -2,21 +2,34 @@ package mimis.event;
 
 import mimis.Event;
 import mimis.value.Action;
+import mimis.value.Signal;
 import mimis.value.Target;
 
 public class Task extends Event {
-    protected Action action;
+    public static Target TARGET = Target.SELF;
+    public static Signal SIGNAL = Signal.END;
 
-    public Task(Target target, Action action) {
-        super(target);
-        this.action = action;
-    }
+    protected Action action;
+    protected Signal signal;
 
     public Task(Action action) {
-        this(Target.SELF, action);
+        this(TARGET, action);
+    }
+
+    public Task(Target target, Action action) {
+        this(target, action, SIGNAL);
+    }
+
+    public Task(Target target, Action action, Signal signal) {
+        super(target);
+        this.action = action;
     }
 
     public Action getAction() {
         return action;
     }
+
+    public Signal getSignal() {
+        return signal;
+    }
 }
diff --git a/java/src/mimis/Exitable.java b/java/src/mimis/manager/Exitable.java
similarity index 66%
rename from java/src/mimis/Exitable.java
rename to java/src/mimis/manager/Exitable.java
index 8ead9d4..73ce2a2 100644
--- a/java/src/mimis/Exitable.java
+++ b/java/src/mimis/manager/Exitable.java
@@ -1,4 +1,4 @@
-package mimis;
+package mimis.manager;
 
 public interface Exitable {
     public void stop();