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 static initalizers in java ?

1068

What about interrupt() method of thread class ?

1128

Explain notify() method of object class ?

1169

What about abstract classes in java?

1112

What about main thread in java?

1174

I want to persist data of objects for later use. What’s the best approach to do so?

1009

What about main() method in java ?

1059

What is a local class in java?

1094

What about features of local inner class?

1122

Can we instantiate interface in java?

1192

Which api is provided by java for operations on set of objects?

1532

What access modifiers can be used for variables?

1220

Explain wait() method of object class ?

1297

Can we cast any other type to boolean type with type casting?

1010

What about interthread communication and how it takes place in java?

1124

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Un-Answered Questions { Core Java }

How can the checkbox class be used to create a radio button?

1086

Does java map allow duplicates?

963

What are the actions that can occur when a thread enters blocked state?

1118

How to handle a web browser resize operation?

1138

What is a class variable?

1101

How to sort double array in java?

1043

What is extension method in java?

1094

Is java util list serializable?

986

How does predicate work in java?

1038

Why do we override tostring method in java?

1027

Can I learn java in 3 months?

1082

What is Java Package and which package is imported by default?

1155

Can we inherit a class with private constructor?

1182

What are the methods available in a class?

1130

Explain parallel processing in java8?

1337

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