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Oracle Core Java Interview Questions
Questions Answers Views Company eMail

Difference between this(), super()?

 12 36582

What is singleton class?

 16 71837

Difference between JDK, JRE, JVM

 16 95926

what is meant by string pooling?

 12 40126

explain System.out.println

 107 198782

What is compile time polymorphism?

 20 38269

what is bytecode? watz the difference between machine code and bytecode?

 9 30222

What is the basically use of finally while we know it is always executed but why?

 5 9134

Read data from console and print in one file. That would be in C:\temp ? Thanks, Bose

 3 7954

I have one POJO class(Java bean class), it has two variables for that it has setters and getters. Now i have created two objects for that class and i have set the data for those variables through this two objects. Now question is i want check whether those two objects have same data or not, for this write a program? Thanks, Bose.

 2 16504

i need example for java abstraction. where we use abstraction and why we need abstraction.

 2 13867

What are the Abstract Classes provided by Java?

 5 10097

Why are inner classes required?

 3 8205

How can we get one Interface methods whit out using implementation of interface

 1 3893

Which is the best way of exception handling?

 2 6852

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Oracle Core Java Interview Questions


Un-Answered Questions

In a KSDS file, key is missing for one record. How to insert the key for that particular record from back up file. Is there any sorting needed for the back up file before the key insertion?

1415

How many femtometers are in a nanometer?

969

What is defaultview in datatable?

994

Can I update windows 7 to windows 10?

751

How much do swift developers make?

765

What are advantages of Routed networking?

1576

What is files manifesting?

2151

Which command is available to show the current HBase user?

154

How to write udf s in delphi?

950

How we can provide data to ado.net?

988

Explain about opera (web browser)?

625

How can we find listineing ports in a machine?

965

Define a food chain?

331

What is osi and what role does it play in computer networks?

352

Explain the meaning of object in object oriented programming?

995