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 the Layout for ToolBar?

1 6781

List interface?

2 5111

What is Locale class?

MySoft,

1 4282

What is Map interface?

Wipro,

3 7634

What is ResourceBundle class?

1 4061

What is the immediate superclass of Menu?

3 11045

What is the immediate parent class of the Applet class?

1 6865

What is the Set interface?

2 5064

What is the SimpleTimeZone class?

2278

What is the Vector class?

3 6564

What are event-delegation model and event-inheritance model? Which is best?

1 9832

What is the argument type of main() method?

2 5269

What is the catch or declare rule for method declarations?

1 7776

Default layout of Dialog object?

1 7976

Default layout of panel and frame?

3 23584

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Un-Answered Questions { Core Java }

Differentiate between overriding and overloading cases?

1106

Can we assign null to double in java?

1015

What is java in simple terms?

999

Can we have a try block without catch block?

986

How do you convert bytes to character in java?

1001

What do you understand by an io stream?

1047

Can a final method be overloaded?

944

How to add menushortcut to menu item?

1003

Can I extend singleton class in java?

1106

Write a java program to check if a number is prime or not?

1039

1.IN CASE OF DYNAMIC METHOD DISPATCH WHY WE USE REFERENCE VARIABLE,WE CAN USE THE DIFFERENT DEFINED OBJECT DIRECTLY TO ACCESS THE DATA MEMBER AND MEMBER FUNCTION OF THAT RESPECTIVE CLASS?WHAT IS THE MAIN FUNCTION OF "REFERENCE VARIABLE" HERE?

4953

What best practices should you follow while writing multithreaded code in java?

1073

What is the use of flag?

1092

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

1387

What is the purpose of garbage collection in java?

1100

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