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

Core Java Interview Questions

Questions Answers Views Company eMail

How to invoke external process in java.

1138

How the interruptible method gets implemented?

1031

What is the use of runnable interface?

1238

What is an immutable class?

1214

Can you explain inner class.

1143

What is the requirement of thread in java?

1113

Explain the difference between association, aggregation and inheritance relationships.

1162

Difference between java and javascript

1156

Difference between vector and arraylist.

1193

Difference between linkedlist and arraylist.

1124

What are the kinds of polymorphism?

1131

How will you load a specific locale?

1034

Define a package.

1182

How to obtain a performance profile of java program

1106

State the difference between creating string as new () and literal.

1199

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Un-Answered Questions { Core Java }

Which package is always imported by default?

1152

Is java hard to learn?

967

Can we create an object of private class?

1025

Why inputstreamreader is used in java?

1061

Which class cannot be a subclass in java?

1079

What is lazy programming?

1098

Where are the card layouts used?

1131

What do you mean by access modifier?

1115

When a thread is executing synchronized methods , then is it possible to execute other synchronized methods simultaneously by other threads?

1155

What is command line argument in java?

1233

How to change value in arraylist java?

1259

Differentiate between the constructors and methods in java?

999

What is the maximum size of hashmap in java?

1061

Compare java and python.

1036

What data structures are used to perform recursion?

1108

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