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| Interview Questions and Answers for 'Cricbuzz' - 2 question(s) found - Order By Newest | ||||
 Very Frequently asked. Have been asked in HCL Technologies very frequently ( based on 3 feedback ). Among first few questions in many interviews. | ||||
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| Ans. Abstract classes can have both abstract methods ( method declarations ) as well as concrete methods ( inherited to the derived classes ) whereas Interfaces can only have abstract methods ( method declarations ). A class can extend single abstract class whereas it can implement multiple interfaces. | ||||
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 Discuss Correct / Improve  java classes abstract class interfaces abstract class vs interface abstract classes vs interfaces  Asked in 82 Companies  basic  frequent | ||||
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| What are Marker Interfaces ? Name few Java marker interfaces ? | ||||
| Can we declare interface methods as private ? | ||||
| What is comparator interface used for ? | ||||
| What is the use of runnable interface if we can always create a new thread using Thread class ? | ||||
| Which of the following doesn't extend Collection interface ? | ||||
| Frequently asked in Cognizant (CTS) | ||||
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| Ans. Storing the state of an object in a file or other medium is called serialization. Classes can communicate only if they are built together ( as they need Byte code for communication ). What if we need to enable communication between different applications ( i.e they have been built independently or even they reside at different locations ), We need a mechanism that will transfer the Bean state to a Medium than can be transferred to the receiving application. | ||||
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| Discuss Correct / Improve java oops serialization Asked in 18 Companies basic frequent | ||||
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| Related Questions | ||||
| Can we declare static variables as transient ? | ||||
| Which elements of a class are ignored during serialization ? | ||||
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| What one should take care of, while serializing the object? | ||||
| What is the use of Transient Keyword ? | ||||
| serialization and deserialization of singleton class | ||||
| Difference between Serialization and Deserialization ? | ||||
| What is an Externalizable interface ? | ||||
| Difference between serializable and externalizable interface ? | ||||
