IBS Software Services SSE Interview Questions and Answers

HashMap is non-synchronized and allows null values, while HashTable is synchronized and doesn't allow null values.

• HashMap is faster than HashTable due to non-synchronization.

• HashMap allows null values for both key and value.

• HashTable doesn't allow null values for key or value.

• HashMap is preferred for single-threaded applications.

• HashTable is preferred for multi-threaded applications.

• Both use key-value pairs to store an