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 hashing principle in java?

1047

What is time complexity java?

1014

Which is faster set or list in java?

1050

What is size () in java?

1117

What is a key in java?

992

What is import java util arraylist?

1199

Why we go for collections in java?

996

What is arraylist class in java?

1081

What is java util concurrentmodificationexception?

934

What is thread safe java?

935

What is fail first in java?

1228

What is the difference between length and size in java?

1003

What is the maximum size of array in java?

998

What does index mean in java?

1013

What is complexity in java?

1073

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Un-Answered Questions { Core Java }

What do negative exponents mean?

1065

What happens when a thrown exception is not handled?

1136

What is the size of integer?

1114

What is the advantage of functional interface in java 8?

1011

What are the fileinputstream and fileoutputstream?

1084

What are the 3 types of control structures?

1037

What is a method in java?

1065

How does enum work in java?

1033

how does multithreading take place on a computer with a single cpu? : Java thread

1168

Why is it called boolean?

1027

What is JDBC Driver interface?How can you retrieve data from the ResultSet

2127

How to instantiate member inner class?

1105

Explain the difference between collection api and stream api in java8?

998

What is the main use of generics in java?

1014

What is the difference between class forname and new?

1020

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