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

Core Java Interview Questions

Questions Answers Views Company eMail

A class can be a subclass of itself?

Genesis,

2 10658

Are nested try statements are possible?

2 5284

Is multiple inheritance allowed in Java? Why ?

7 12145

Is 'null' a keyword?

8 10158

Is 'sizeof' a keyword?

7 17930

Does any tag exists in HTML to upload and download files ?

3 8373

Are there any tools available in java to create reports?

5 9478

Explain Connection Pooling?

3 9189

What classes can be used to store arbitrary number of objects ?

1 4185

Can you give names of Container classes?

Ordain Solutions,

2298

What are the names of interfaces that doesn't consists of method/s ?

3 7776

What primitive Java types? Howmany are they and what are their names?

3 5803

What are the names of Component subclasses that support painting?

1 3767

What are teh sub-classes of a component class?

2 5021

Name two subclasses of the TextComponent class?

2 6930

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Un-Answered Questions { Core Java }

What’s the difference between constructors and other methods?

990

What is treeset in java collection?

962

Why is stringbuffer called mutable?

989

What is finally block?

1047

What are the differences between c++ and java?

1129

How many bits are in a sentence?

1165

What is string [] args?

1000

What is the formula to calculate percentage?

1010

What access modifiers can be used for methods?

1096

What is the purpose of lambda expressions?

1049

What are the different types of garbage collectors in java?

1130

What are java packages? What is the significance of packages?

1007

Why to use nested classes in java?

1116

What does 0 mean in boolean?

976

What are the benefits of java?

1130

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