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

Core Java Interview Questions

Questions Answers Views Company eMail

Which keyword specify that a variable is effectively final ?

994

Which access specifier can be used with class ?

1001

How can we run a java program without making any object?

1045

What will happen if there is a default method conflict as mentioned above and we have specified the same signature method in the base class instead of overriding in the existing class ?

966

Explain about anonymous inner classes ?

1084

What one should take care of, while serializing the object?

904

When do you get classcastexception?

1031

Explain method local inner classes ?

1038

Difference between object instantiation and construction ?

1071

Difference between this() and super() ?

1117

What are different ways of object creation in java ?

1078

How can we create objects if we make the constructor private ?

1015

What is a final class ?

1183

Explain inner classes ?

1129

Can static method access instance variables ?

1140

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Un-Answered Questions { Core Java }

Hi friends am new to java. I read jar file means collection of java files. For executing struts application what are the necessary jar files. " struts.jar " file contains what. can u explain

1932

How to create a thread in java?

1141

Is array primitive data type in java?

1000

What is append in java?

1167

What are wrapper classes in java?

1073

What is variable explain?

1004

How are variables stored?

986

What is a boolean in java?

1051

What are basic keywords?

1040

Which list does not allow duplicates in java?

940

Is finalize() similar to a destructor?

1023

Does java linked list allow duplicates?

973

What is difference between == equals () and compareto () method?

1051

Why is the singleton pattern considered to be an anti pattern?

888

What is the difference between and ?

1017

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