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Hashtable and HashMap are two of the most fundamental classes from Java Collections Framework. They both implement Map interface, earlier Hashtable us http://java67.blogspot.co.uk/2012/08/5-difference-between-hashtable-hashmap-Java-collectio...
Java beginners often confused between ConcurrentHashMap and HashMap. They tend to use CHM even when its not required and they use HashMap where its no http://java67.blogspot.com/2012/08/difference-between-hashmap-and-concurrentHashMap-java-c...
Multi-threading and Thread basic concepts are integral part of any Java JEE interviews. This article contains some of the good questions from various http://java67.blogspot.com/2012/08/5-thread-interview-questions-answers-in.html
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