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Core Java - Interview Questions and Answers for 'Cloneable' - 5 question(s) found - Order By Newest

 Q1. What is a cloneable interface and what all methods does it contain?Core Java
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Ans. Cloneable is a declaration that the class implementing it allows cloning or bitwise copy of it's object state. It is not having any method because it is a MARKER interface.

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   Like         Discuss         Correct / Improve     java   oops   cloneable   marker interface  cloning     Asked in 1 Companies


 Q2. Name few classes that implement Cloneable interface ?
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Ans. http://www.buggybread.com/2015/02/java-collections-classes-that-implement_58.html

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   Like         Discuss         Correct / Improve     java   cloneable  cloning


 Q3. Why Collection interface does not extend Cloneable interface ?Core Java2016-09-15 09:40:06

Ans. Here is the list of classes that implements Collections Interface - http://www.buggybread.com/2015/02/java-collections-classes-that-implement.html

Having Collection interface to extend Cloneable interface would mean necessarily implement clone method by all implementing classes. As not all collection classes allow duplicate elements, it makes no sense to clone elements for them.

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   Like         Discuss         Correct / Improve     cloneable  collections  collection interface  cloning


 Q4. What is the default data type of state variables in Clonable interface and Serializable interface ?Core Java2017-09-25 08:33:18

Ans. Cloneable and Serializable are Marker Interfaces, So these are empty interfaces with no variables.

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 Q5. How to avoid cloning, serialization in the singleton class ?Design2019-01-04 10:12:26

Ans. For Cloning-exception,For deserialization-read.resolve()

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   Like         Discuss         Correct / Improve     singleton  cloneable  serializable  serialization  cloning     Asked in 1 Companies



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