diff --git a/playground/java/src/org/broadinstitute/sting/indels/IntervalComparator.java b/playground/java/src/org/broadinstitute/sting/indels/IntervalComparator.java
new file mode 100755
index 000000000..68b281420
--- /dev/null
+++ b/playground/java/src/org/broadinstitute/sting/indels/IntervalComparator.java
@@ -0,0 +1,22 @@
+package org.broadinstitute.sting.indels;
+
+import org.broadinstitute.sting.utils.Interval;
+
+
+public class IntervalComparator implements java.util.Comparator<Interval> {
+	public int compare(Interval r1, Interval r2) {
+		if ( r1.getStart() < r2.getStart() ) return -1;
+		if ( r1.getStart() == r2.getStart() ) {
+			if ( r1.getStop() < r2.getStop() ) return -1;
+			if ( r1.getStop() == r2.getStop() ) return 0;
+		}
+		return 1;
+	}
+	
+	@Override
+	public boolean equals(Object o) {
+		if ( o instanceof IntervalComparator) return true;
+		return false;
+	}
+
+}