Eclipse map hashedmap cannot be converted to Java

eclipse Map HashedMap Cannot convert to java.util

Exception in thread "main" java.lang.ClassCastException: org.apache.commons.collections.map.HashedMap cannot be cast to java.util.Map

at Duplicate.ClosestCodeMatches.CompareEach(ClosestCodeMatches.java:19)at Duplicate.ClosestCodeMatches.main(ClosestCodeMatches.java:55)