java HashMap contains Set as key and arraylist as value

java HashMap contains Set as key and arraylist as value

References

Reference NO 1

http://stackoverflow.com/questions/13582678/java-hashmap-contains-set-as-key-and-arraylist-as-value

Reference NO 2

http://stackoverflow.com/questions/1026723/how-to-convert-a-map-to-list-in-java

Reference NO 3

http://stackoverflow.com/questions/9973596/arraylist-as-key-in-hashmap

Reference NO 4

http://stackoverflow.com/questions/960807/hashmapkey-string-value-arraylist-returns-an-object-instead-of-arraylist

Reference NO 5

http://www.dreamincode.net/forums/topic/268405-adding-keyvalue-pairs-from-a-hashmap-in-to-an-arraylist/

Reference NO 6

http://www.coderanch.com/t/503543/java/java/HashMap-Integer-ArrayList

Reference NO 7

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Reference NO 8

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