The ConcurrentHashMap class part of concurrent collections package added on JDK 1.5 which contains utility classes likeBlockingQueue, CopyOnWriteArra…
ArrayList and Vector are two of most used class on java collection package and difference between Vector and ArrayListis one of the most frequently a…
HashMap vs HashSet is the most frequently asked question during any core java interview and the interview is not said completed until they will not c…
HashMap vs EnumMap in Java What is the difference between EnumMap and HashMap in Java is the latest Java collection interview question which has be…
TreeSet, LinkedHashSet and HashSet all are implementation of Set interface and by virtue of that, they follows contract of Set interface i.e. they do…
Interview questions from Collection package or framework are most common in any Core Java Interview yet a tricky one. Together Collection and multit…