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Core Java Interview Questions
Questions Answers Views Company eMail

write a program that list all permutations of ABCDEF in which A appears before B?

Nissan,

2009

why an outer class cannot be declared as private?

 1 3606

What is abstraction with strong example program? (not a general program)

 3 4842

Why Java is called as purely platform independent..? Explain briefly..dont Give regular answers Explain with your own example..?

Nokia,

8 30347

Can any one say how will sort map objects in java?

TCS,

2 4294

How can u create the Object of class Without using "New" opertor?

IBM, TCS,

3 7262

How can two threads be made to communicate with each other?

HCL,

3 7535

Static Variable can referred in non-static method?

 3 4217

when we create singleton design then we create private constructtor..so how JVM take private constructor to make object..but it's private..

Ness Technologies,

1 4516

Why transient variables wont participate in serialization?

 2 5111

what is ststic with example

Wipro,

1589

what is purpose of collections.unmodified() method..?

Accenture,

1 10751

what is purpose of writting public static void main(Strind arg[]) in java..?

ITC Infotech,

4 6139

What is the code inside the public void actionPerformed(ActionEvent ae) override method in Applet [ Condition:- you have one TextField and One Button , you have to enter any color name inside the TextField, when you click on Button Your background will change according to your input color name]

IBM,

2 9885

how to identify duplicate values in arraylist

TCS,

2 4409

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Un-Answered Questions { Core Java }

How do you create a bulleted list?

557

How does arrays sort work in java?

595

What is the technique adopted to create an immutable class?

519

What is a lightweight component?

586

What do you mean by an object in java?

624




What is void in java?

582

Does java isempty check for null?

565

Explain the scope or life time of class variables or static variables?

513

Why are variables important in research?

548

What are the drawbacks of reflection?

556

Can a class have a static inner class?

600

What is the difference between an argument and a parameter?

534

What are the two main uses of volatile in Java?

595

What is widening and narrowing in java? Discuss with an example.

554

Variable of the boolean type is automatically initialized as?

593

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