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 covariant return type?

1162

Explain different forms of polymorphism?

1201

Is there any difference between synchronized methods and synchronized statements?

1144

Tell us something about an iterator.

1016

Write a code to show a static variable?

1139

What is super?

1261

Can we declare a static variable inside a method?

1054

What do you understand by soft reference?

1108

If a class is declared without any access modifiers, where can the class be accessed?

1109

What is instance synchronization?

1109

What is callablestatement? How you can call stored procedure to pass in parameter?

1072

Are the imports checked for validity at compile time? Will the code containing an import such as java.lang.abcd compile?

1142

What is the common usage of serialization?

1230

What is a prefix function.write down a code to compute prefix function.

1115

What are some alternatives to inheritance?

1173

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Un-Answered Questions { Core Java }

what is nested class in java?

1228

What is static import in java?

1040

What is a singleton class? Give a practical example of its usage.

1154

Explain how to convert any java object into byte array.

1014

What is the byte order of byte buffer?

1085

Can we extend private class in java?

1030

What is the size of int in 64-bit jvm?

1184

Is node a data type in java?

1062

How is tree Mirroring implemented?

1128

Explain reverse a linked list recursive java solution?

1049

How do I get the | symbol on my keyboard?

1127

What is method overriding in java ?

1259

What is arraylist e?

1153

What is the set interface in java programming?

1293

What is the public method modifier?

1078

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