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

Core Java Interview Questions

Questions Answers Views Company eMail

Explain about java sdk?

1054

What is meant by javabeans?

1110

Explain the reason behind ending a program with a system.exit(0)?

1101

Explain about class in java?

1132

What is bean? Where it can be used?

1109

Have you ever used hashtable and dictionary?

1038

What is the exact difference in between unicast and multicast object? Where we will use?

1011

When is update method called?

1159

Say any two properties in beans?

1076

In a container there are 5 components. I want to display the all the components names, how will you do that one?

1059

Considering notepad/ie or any other thing as process, what will happen if you start notepad or ie 3 times? Where 3 processes are started or 3 threads are started?

1172

State some advantages of java?

1265

How does thread synchronization occurs inside a monitor?

1138

Explain about the interpreter in java?

1071

What is the difference between menuitem and checkboxmenu item?

1353

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Un-Answered Questions { Core Java }

Is 0 true or false in java?

1001

Is singleton a bad practice?

1069

What is constructor and virtual function? Can we call a virtual function in a constructor?

1156

If I only change the return type, does the method become overloaded?

939

Write a program to reverse a number in java?

1107

What are the 4 versions of java?

1183

Is arraylist ordered in java?

1128

What is a locale?

1164

How is string immutable in java?

1052

Is java util list serializable?

946

Explain how to force the garbage collection in java.

982

What is java util hashmap?

1000

Write a program to print fibonacci series up to count 10.

917

What is the different between get and post?

989

What are aggregate functions explain with examples?

1079

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