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

Core Java Interview Questions

Questions Answers Views Company eMail

What is polymorphism and what are the types of it?

1004

What is broken and continue statement?

1015

Define an enumeration?

1063

What is a finally block? Is there a case when finally will not execute?

1100

Is it possible to use string in the switch case?

1059

Compare overloading and overriding?

1018

What is the difference between import java.util.date and java .util?

1065

how to create constants in java?

1095

How to change the priority of thread or how to set the priority of thread?

1053

Garbage collection in java?

1033

How do you test a method for an exception using junit?

1225

Can a constructor call another constructor?

999

Explain 5 features introduced in jdk 1.7?

1035

Can we use a switch statement with strings?

1069

Can we have a try block without catch block?

1008

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Un-Answered Questions { Core Java }

What are annotations in java?

1107

how come we know the object is no more used in the class?

6494

What are the advantages of java inner classes?

1083

Which java collection does not allow null?

1161

Why destructor is not used in java?

992

What is the difference between stream and buffer?

979

Explain abstract class in java?

1081

What does the three dot emoji mean?

1137

What do you understand by access specifiers in Java?

1029

What are the different http methods?

1053

Does java arraylist maintain insertion order?

1004

What is java abstraction with example?

1077

Can you instantiate the math class in Java?

1106

What are the steps that are followed when two computers connect through tcp?

1006

Can a class extend more than one class?

1136

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