--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/edu/unc/genomics/PositiveIntegerValidator.java	Mon Feb 13 22:12:06 2012 -0500
@@ -0,0 +1,23 @@
+package edu.unc.genomics;
+
+import com.beust.jcommander.IParameterValidator;
+import com.beust.jcommander.ParameterException;
+
+/**
+ * @author timpalpant
+ *
+ */
+public class PositiveIntegerValidator implements IParameterValidator {
+
+	/* (non-Javadoc)
+	 * @see com.beust.jcommander.IParameterValidator#validate(java.lang.String, java.lang.String)
+	 */
+	@Override
+	public void validate(String name, String value) throws ParameterException {		
+		int n = Integer.parseInt(value);
+		if (n <= 0) {
+			throw new ParameterException("Parameter "+name+" must be > 0 (was "+value+")");
+		}
+	}
+
+}