diff --git a/src/main/java/mvd/jester/App.java b/src/main/java/mvd/jester/App.java
index 48fc1d6..d70be57 100644
--- a/src/main/java/mvd/jester/App.java
+++ b/src/main/java/mvd/jester/App.java
@@ -1,10 +1,7 @@
 package mvd.jester;
 
-import java.io.PrintWriter;
 import mvd.jester.model.SystemSetup;
-import mvd.jester.simulator.EventPrinter;
-import mvd.jester.simulator.MaiaBertogna;
-import mvd.jester.simulator.SchmidMottok;
+
 
 /**
  * Hello world!
diff --git a/src/main/java/mvd/jester/priority/EarliestDeadineFirst.java b/src/main/java/mvd/jester/priority/EarliestDeadineFirst.java
index e69de29..4d4ea23 100644
--- a/src/main/java/mvd/jester/priority/EarliestDeadineFirst.java
+++ b/src/main/java/mvd/jester/priority/EarliestDeadineFirst.java
@@ -0,0 +1,29 @@
+package mvd.jester.priority;
+
+import mvd.jester.model.Task;
+import mvd.jester.simulator.internals.TaskContextInterface;
+
+/**
+ * EarliestDeadineFirst
+ */
+public class EarliestDeadineFirst implements PriorityManager {
+
+    /**
+     * Compare the priority of two tasks according to the Rate Monotonic policy
+     * 
+     * @param t1 The first task
+     * @param t2 The second task
+     * @return 0 if both tasks have the same priority, positive number if the first task has a
+     *         higher priority, negative number if the second task has a higher priority
+     */
+    @Override
+    public int compare(Task t1, Task t2) {
+        throw new RuntimeException(
+                "Earliest Deadline First does not have Priority Manager for tasks");
+    }
+
+    @Override
+    public int compare(TaskContextInterface t1, TaskContextInterface t2) {
+        return (int) (t1.getDeadline() - t2.getDeadline());
+    }
+}
diff --git a/src/main/java/mvd/jester/priority/PriorityManager.java b/src/main/java/mvd/jester/priority/PriorityManager.java
index 273b0ac..f87036d 100644
--- a/src/main/java/mvd/jester/priority/PriorityManager.java
+++ b/src/main/java/mvd/jester/priority/PriorityManager.java
@@ -1,12 +1,15 @@
 package mvd.jester.priority;
 
-import java.util.Comparator;
 import mvd.jester.model.Task;
+import mvd.jester.simulator.internals.TaskContextInterface;
 
 /**
  * PriorityManager
  */
-public interface PriorityManager extends Comparator<Task> {
+public interface PriorityManager {
 
-}
+    public int compare(Task t1, Task t2);
+
+    public int compare(TaskContextInterface t1, TaskContextInterface t2);
 
+}
diff --git a/src/main/java/mvd/jester/priority/RateMonotonic.java b/src/main/java/mvd/jester/priority/RateMonotonic.java
index d650e1b..7b23fc1 100644
--- a/src/main/java/mvd/jester/priority/RateMonotonic.java
+++ b/src/main/java/mvd/jester/priority/RateMonotonic.java
@@ -1,6 +1,7 @@
 package mvd.jester.priority;
 
 import mvd.jester.model.Task;
+import mvd.jester.simulator.internals.TaskContextInterface;
 
 public class RateMonotonic implements PriorityManager {
 
@@ -16,4 +17,9 @@ public class RateMonotonic implements PriorityManager {
     public int compare(Task t1, Task t2) {
         return Long.compare(t1.getPeriod(), t2.getPeriod());
     }
+
+    @Override
+    public int compare(TaskContextInterface t1, TaskContextInterface t2) {
+        return Long.compare(t1.getTask().getPeriod(), t2.getTask().getPeriod());
+    }
 }
diff --git a/src/main/java/mvd/jester/simulator/internals/schmidmottok/JobContext.java b/src/main/java/mvd/jester/simulator/internals/schmidmottok/JobContext.java
index 410917a..4a71c5e 100644
--- a/src/main/java/mvd/jester/simulator/internals/schmidmottok/JobContext.java
+++ b/src/main/java/mvd/jester/simulator/internals/schmidmottok/JobContext.java
@@ -18,7 +18,6 @@ public class JobContext implements JobContextInterface {
     private final long wcet;
     private Optional<ProcessorContext> currentProcessor;
     private Optional<TaskletContext> currentTasklet;
-    private long executionTime;
 
 
     public JobContext(TaskContext taskContext, SegmentContext segmentContext) {
@@ -27,7 +26,6 @@ public class JobContext implements JobContextInterface {
         this.taskContext = taskContext;
         this.segmentContext = segmentContext;
         this.wcet = segmentContext.getSegment().getJobWcet();
-        this.executionTime = wcet;
     }
 
     public Optional<TaskContextInterface> updateExecution(long time) {