added final

.settings/edu.umd.cs.findbugs.core.prefs

 #FindBugs User Preferences
-#Wed Dec 17 09:02:35 CET 2014
+#Fri Dec 19 13:43:52 CET 2014
 detector_threshold=3
 effort=max
 excludefilter0=.fbExcludeFilterFile|true

src/main/java/teetime/framework/idle/SleepStrategy.java

 package teetime.framework.idle;
 
-public class SleepStrategy implements IdleStrategy {
+public final class SleepStrategy implements IdleStrategy {
 
 	private final long timeoutInMs;
 

src/main/java/teetime/framework/idle/YieldStrategy.java

 package teetime.framework.idle;
 
-public class YieldStrategy implements IdleStrategy {
+public final class YieldStrategy implements IdleStrategy {
 
 	@Override
 	public void execute() throws InterruptedException {