Question
What is Advantages of using Immutable class
Answers
• Thread safe - Immutable classes are thread safe, they will never create race condition.

• Key in HashMap - Immutable classes are can be used as key in Map (HashMap etc.)

• HashCode is cached - JVM caches the HashCode of Immutable classes used in application. JVM need not to calculate hashcode again. Hence, performance of application is improved significantly.

• If Immutable class throws Exception - If Immutable class throws Exception, they are never left in undesirable state.   Your Comment




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