Related InterviewSolutions

• Differentiate between HashMap and TreeMap in the context of Java.
• Why does not the Map interface extend the Collection Interface or vice-versa?
• Why do we need synchronized ArrayList when we have Vectors (which are synchronized) in Java?
• How can you synchronize an ArrayList in Java?
• Why does HashMap allow null whereas HashTable does not allow null?
• Differentiate between HashMap and HashTable.
• What is the use of Properties class in Java? What is the advantage of the Properties file?
• Differentiate between Iterator and Enumeration.
• What is the purpose of RandomAccess Interface? Name a collection type which implements this interface.
• Explain fail-fast and fail-safe iterators. Differentiate between them.