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 are the standards to place package statement within a source code file?

1 3628

What is the return type of read()?

3 7020

What is the return type of readLine() when end of a file is reached?

2 11502

What for read() function?

3 8910

What happens to the Exception object after handling an exception?

2371

What is stop(), suspend(), resume() method?

3 25242

What are MalformedURLException and UnknownHost Exceptions and whey they will be thrown?

2 4704

Under what circumstances an object reference be cast to an interface reference?

3 8178

When do you create an index?

2032

When does Exception occurs?

3 6284

In what circumstances, compiler will supply a default constructor for a class?

4 6518

When is an object in the mean to garbage collection?

3 6385

What are init(), start() methods and whey they are called?

2 8624

When finally clause is executed?

3 7414

When try and catch block is used ?

6 9072

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Un-Answered Questions { Core Java }

Which eclipse is best for java?

999

What is difference between fail-fast and fail-safe?

1238

What are the default and parameterized constructors?

1057

Is empty list java?

925

What is the argument in java?

919

What is purpose of keyword void?

1049

What is the difference between stringbuffer and stringbuilder?

1056

What is a double vs float?

1016

What is data movement?

1138

What are three ways in which a thread can enter the waiting state in java programming?

1162

What are passing parameters?

1088

Write the algorithm to check the number non-leaf nodes in a tree.

1076

how to know the total memory occupied by the objects in the ArrayList(Array list may contain duplicate objects)

2339

Is there any difference between nested classes and inner classes?

1098

What are wrapper classes in java?

1070

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