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Core Java Interview Questions
Questions Answers Views Company eMail

what is for datainputstream?

 1 2929

What is the use of static keyword in "public static void main()"

College School Exams Tests, Infosys, Six Dee Telecom,

10 9933

what is mena by object block any what is the use of that

CGI,

1776

can any body tell me? does advance java and j2ee both are same.

CTS, Infosys,

4 9008

does core java and j2se both are same?

 5 13170

what is difference between signed & unsigned char?

 2 4033

What is the blank final variable?

 3 5296

difference throws and throw in java

3 4181

What is “try and catch” in java

 2 3845

Integer.parse Int(bf.readLine(System.out.println("enter value for n["+m+"]:"))); can it run under this

1 2361

what is mean by ooad? where we are using? can you tell me any real time example?

Eka Software,

1 3138

What is mean by UML? what is the use? where we are using?

Eka Software,

1 3710

Any one can explain how the inerface uses in java. give with example.

IBM,

1 2200

interface X{ void m1(); void m2(); } class Child2 extends Object implements X { public void m1(){ System.out.println("Child2 M1"); } public void m2(){ System.out.println("Child2 M2"); } } public class ParentChildInfterfaceDemo { public static void main(String[] args){ X x = new Child2(); X x1 = new Child2(); x.m1(); x.m2(); x.equals(x1); } } Will the above code work? If yes? Can you please explain why the code x.equals(x1) will work as the equals method is called on interface reference vaiable?

 2 4872

how can you say that java is independ language

TCS, Wipro,

2 4583

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Un-Answered Questions { Core Java }

Explain about version control?

597

Name some OOPS Concepts in Java?

645

Explain what pure virtual function is?

603

What flag up means?

607

Why Set interface contains unique elements, what internally implemented for this so that it contains unique elements?

7430




Explain purpose of sleep() method in java?

624

What is data structure in java?

543

Explain java thread life cycle.

583

What is downcasting?

576

Can we have multiple classes in a single file?

518

What was java originally called?

518

Can a source file contain more than one class declaration?

521

What do you understand by the bean persistent property?

560

What is parse method?

547

What is assembly language?

554

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