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 are selection structures?

1015

How do you create a sop?

1024

Is void a return type?

981

What is meant by call by reference?

1029

Does string isempty check for null?

1056

What is a condition in programming?

1024

What is method and methodology?

1115

Can we use this () and super () in a method?

992

What is general methodology?

1060

What are the 3 types of control structures?

1032

What is difference between this and super keyword?

1005

What is nested interface?

1024

Can we serialize singleton class?

1056

Can we use both this () and super () in a constructor?

1020

What is jdbc api?

1020

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Un-Answered Questions { Core Java }

What are disadvantages of java?

1016

What are the methods of object class ?

1073

Why is whitespace important?

1094

which one is more efficient int x; 1. if(x==null) 2.if(null==x) state which one either 1 or 2?

11256

What is the difference between super class & sub class?

1213

Is java map thread safe?

983

What do you mean by flow of struts?

1329

What is meant by string is immutable?

1107

Does java arraylist maintain insertion order?

1006

What is difference between static variable and global variable?

1077

What is a parameter example?

994

How big is a gigabyte?

1058

What is purpose of find feature?

1101

Why map is used in java?

1050

Which list is sorted in java?

1052

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