8"
"
207) Difference between Array and ArrayList ?"........................................................................" 38"
208) What is vector?".........................................................................................................................."39"
209) Difference between arraylist and vector ?"........................................................................"39"
210) Define Linked List and its features with signature ?".................................................." 39"
211) Define Iterator and methods in Iterator?"........................................................................"40"
212) In which order the Iterator iterates over collection?"...................................................."40"
212) Explain ListIterator and methods in ListIterator?"........................................................."40"
213) Explain about Sets ?"................................................................................................................."41"
214) Implementations of Set interface ?"....................................................................................."41"
215) Explain HashSet and its features ?"...................................................................................."41"
216) Explain Tree Set and its features?"......................................................................................."41"
217) When do we use HashSet over TreeSet?".........................................................................."42"
218) What is Linked HashSet and its features?"........................................................................"42"
219) Explain about Map interface in java?".................................................................................."42"
220) What is linked hashmap and its features?"........................................................................"42"
221) What is SortedMap interface?".............................................................................................."42"
222) What is Hashtable and explain features of Hashtable?".............................................."42"
223) Difference between HashMap and Hashtable?"................................ ................................"42"
224) Difference between arraylist and linkedlist?"...................................................................."43"
225) Difference between Comparator and Comparable in java?"......................................"43"
226) What is concurrent hashmap and its features ?"............................................................."43"
227) Difference between Concurrent HashMap and Hashtable and
collections.synchronizedHashMap?"................................................................................................"43"
228) Explain copyOnWriteArrayList and when do we use copyOnWriteArrayList?"......"43"
229) Explain about fail fast iterators in java?"............................................................................"44"
230) Explain about fail safe iterators in java?"..........................................................................."44"
Core java Serialization interview questions"...................................................................................."44"
231) What is serialization in java?"................................................................................................."44"
232) What is the main purpose of serialization in java?"........................................................"44"
233) What are alternatives to java serialization?"....................................................................."44"
234) Explain about serializable interface in java?"...................................................................."44"
235) How to make object serializable in java?".........................................................................."44"