Apache Commons Collections errors

Types that extend and augment the Java Collections Framework.

http://commons.apache.org/collections/
Solution coverage:
Summary coverage:

DescriptionException TypeEntry MethodWeb pages

FastHashMap.keySet() has thrown a NoClassDefFoundError

java.lang.NoClassDefFoundError
org.apache.commons.collections.FastHashMap.keySet
2Web pages
NoClassDefFoundErrorFastHashMap.keySet2
Package namePatterns foundSolution coverageSummary coverage
org.apache.commons.collections.map8
org.apache.commons.collections.buffer4
org.apache.commons.collections4
org.apache.commons.collections.iterators3
Package nameClass namePatterns foundSolution coverageSummary coverage
org.apache.commons.collectionsFastHashMap1
org.apache.commons.collectionsLRUMap1
org.apache.commons.collectionsSequencedHashMap$OrderedIterator1
org.apache.commons.collectionsCollectionUtils1
Package nameClass nameMethod namePatterns foundSolution coverage
org.apache.commons.collectionsFastHashMapkeySet1
Package nameClass nameMethod nameException TypePatterns foundSolution coverage
org.apache.commons.collectionsFastHashMapkeySetNoClassDefFoundError1