diff --git a/tools/cooja/java/se/sics/cooja/TimeEvent.java b/tools/cooja/java/se/sics/cooja/TimeEvent.java
new file mode 100644
index 000000000..1c3fae107
--- /dev/null
+++ b/tools/cooja/java/se/sics/cooja/TimeEvent.java
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2008, Swedish Institute of Computer Science.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Institute nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $Id: TimeEvent.java,v 1.1 2008/10/28 12:51:22 fros4943 Exp $
+ */
+
+package se.sics.cooja;
+
+/**
+ * @author Joakim Eriksson (ported to COOJA by Fredrik Österlind)
+ */
+public abstract class TimeEvent {
+  // For linking events...
+  TimeEvent nextEvent;
+  TimeEvent prevEvent;
+
+  // Keeps track of where this is scheduled
+  EventQueue scheduledIn = null;
+  String name;
+
+  protected int time;
+
+  public TimeEvent(int time) {
+    this.time = time;
+  }
+
+  public TimeEvent(int time, String name) {
+    this.time = time;
+    this.name = name;
+  }
+
+  public final int getTime() {
+    return time;
+  }
+
+  public boolean isScheduled() {
+    return scheduledIn != null;
+  }
+
+  public boolean remove() {
+    if (scheduledIn != null) {
+      return scheduledIn.removeEvent(this);
+    }
+    return false;
+  }
+
+  public abstract void execute(int t);
+
+  public String getShort() {
+    return "" + time + (name != null ? ": " + name : "");
+  }
+
+} // TimeEvent