Core Java Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Core Java Interview Questions

Questions Answers Views Company eMail

Can a class have an interface?

1009

Can we override the static methods?

1053

What do you understand by an io stream?

1062

What is the purpose of a default constructor?

1109

Can we override the overloaded method?

1167

Can an interface have a class?

1018

Is it possible to instantiate the abstract class?

967

What are the differences between stringbuffer and stringbuilder?

1075

What are the advantages of encapsulation in java?

1028

What are the restrictions that are applied to the java static methods?

1007

Can you declare an interface method static?

1075

What are the advantages of java inner classes?

1084

Will the jvm load the package twice at runtime?

1115

Can we make constructors static?

1252

If I don't provide any arguments on the command line, then what will the value stored in the string array passed into the main() method, empty or null?

1269

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Un-Answered Questions { Core Java }

What are the drawbacks of reflection?

1034

Name some classes present in java.util.regex package.

1053

what is the purpose of "virtual"?

1103

Explain runtime exceptions?

1194

What are drawbacks of singleton class?

971

What is meant by polymorphism?

1040

Can this keyword be used to refer static members?

1039

Can memory leak happen java?

1021

What defines function?

989

what is the major difference between linkedlist and arraylist in java?

1238

design an lru cache in java?

1019

how to write a server program and sending the mails to the server using smtp protocol please help me

2080

What is a nullable field?

1055

Can you inherit a constructor java?

1108

What is parsing in java?

974

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