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| Core Java - Interview Questions and Answers for 'Immutability classe' - 3 question(s) found - Order By Rating | ||||
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| Ans. Immutable objects are thread-safe so you will not have any synchronization issues.Immutable objects are good for Map keys and Set elements, since these typically do not change once created.Immutability makes it easier to write, use and reason about the code (class invariant is established once and then unchanged)Immutability makes it easier to parallelize your program as there are no conflicts among objects.The internal state of your program will be consistent even if you have exceptions.References to immutable objects can be cached as they are not going to change. | ||||
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 Discuss Correct / Improve  immutable immutability classes benefits of immutable immutability classes  Asked in 1 Companies | ||||
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| Ans. string and wrapper class objects | ||||
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| Discuss Correct / Improve immutability immutable immutability classes immutable immutability collections Asked in 3 Companies | ||||
| Related Questions | ||||
| Why is String immutable in Java ? | ||||
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| How is string object immutable if we can concat a string to it ? | ||||
| How to implement an immutable class ? | ||||
| What is an immutable class ? | ||||
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| Does Declaring an object "final" makes it immutable ? | ||||
| Is String final in Java ? | ||||
| What are stateless objects ? How are they different from immutable objects ? Which of these two is thread safe ? | ||||
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| Ans. There is no concept of de referencing with primitive types and hence they are implicitly immutable. Having wrapper classes as mutable offers disadvantages compared to primitive types. Wrapper classes being immutable offer similar advantage as primitive types.It actually overshadows the disadvantage wrapper class could have if they are immutable. | ||||
| Help us improve. Please let us know the company, where you were asked this question : | ||||
| Discuss Correct / Improve immutable immutability classes wrapper classes | ||||
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