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 differences between java and .net?..why u choose java?

1 4811

where exactly collections are usefull in realtime

2 10372

What is the use of static import ?

Rolta,

4 10064

whar are the draw backs of programming lang step by step in Clang and next in C++ and next and in Java nad in .Net

2104

Write a program that takes a 5 digit number and calculates 2 power that number and prints it.

1 4224

what is default layout of JFrame class?

6 26556

as we know a static method could access static data and static method only. then how could main method call the object of aclass which is not static and other non static data

1 3848

Difference between Encapsulation and Abstraction

Fidelity,

4 11625

What is aggregation and composition ?

Fidelity,

1 6605

Can we add default constructor to Servlet?

Fidelity,

1 6919

How do u pass data from one jsp to another jsp?

Fidelity,

3 15514

what is the meaning of java.lang and java.util

6 36767

if a java file without any source code is valid java file?

SparkTG,

3 9935

why string is not taking as primitive datatypes but we r taking it as a class? why explain it?

HP, SparkTG,

2 6405

What is the difference between the synchronized() & static synchronized()?

HP, SparkTG,

2 8693

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Un-Answered Questions { Core Java }

Is java util list serializable?

932

Is call by reference possible in java?

964

What is data type example?

963

What is this keyword used for?

1117

Does printwriter create a file?

962

What is object-oriented programming?

1123

What technique can be employed to compare two strings?

1104

How many java versions are there?

1055

Realized?

2188

Is an empty arraylist null?

1097

What is the main advantage of passing argument by reference?

996

Explain yield() method in thread class ?

1064

What is difference between array and vector?

1089

What does isempty () do in java?

1058

What is an object in java?

1039

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