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

Core Java Interview Questions

Questions Answers Views Company eMail

How concurrent hashmap works?

1195

How to read and write image from a file ?

1062

What is assembly condition codes?

1007

Can a static block throw exception?

1105

What is difference between iterator access and index access?

1077

Explain an intermediate language?

988

What state is a thread in when it is executing?

980

Difference difference paint() and paintcomponent()?

1011

What is the difference between the jdk 1.02 event model and the event-delegation model introduced with jdk 1.1?

1147

When should the method invokelater() be used?

1038

What are the object and class classes used for?

1057

What is the collection interface?

1038

What is the difference between jfc & wfc?

1087

What is the difference between a scrollbar and a scrollpane?

1075

Name four container classes.

1005

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Un-Answered Questions { Core Java }

Do I need to import java.lang package any time? Why?

1409

What is the purpose of skeleton and stub?

1273

When does an object becomes eligible for garbage collection in java?

1083

Is vector thread safe in java?

1066

How does finally block differ from finalize() method?

1066

What is boolean false?

993

What is difference between null and void?

990

What is variable and example?

980

Explain access modifiers in java.

1060

Who is founder of java?

1007

What are the methods available in a class?

1097

Is oracle charging for java?

1050

What do you mean by hashing?

1125

How to split arraylist elements in java?

1191

What is the significance of java packages?

1118

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