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?

1116

Explain different forms of polymorphism?

1155

Is there any difference between synchronized methods and synchronized statements?

1102

Tell us something about an iterator.

966

Write a code to show a static variable?

1096

What is super?

1174

Can we declare a static variable inside a method?

1009

What do you understand by soft reference?

1068

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

1067

What is instance synchronization?

1057

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

1025

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

1109

What is the common usage of serialization?

1150

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

1065

What are some alternatives to inheritance?

1113

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Un-Answered Questions { Core Java }

Is a class subclass of itself?

1091

What is the difference between access specifiers and access modifiers in java? 16

1004

Explain access modifiers in java.

1049

What is the default value of an object reference declared as an instance variable?

1130

What data type is true or false?

1050

how to split string in java?

1222

What are the access modifiers in java?

1042

Are arrays classes in java?

1041

Can we split string with in java?

1023

Are primitives objects?

1066

What is the declaration statement?

957

What is bufferedwriter?

976

What is token in java?

1027

When can we say that threads are not lightweight process in java?

1163

Why string is immutable with example?

987

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