Core Java Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

Core Java Interview Questions

Questions Answers Views Company eMail

where do you place after you did code in java

2 4483

why we r not use pointers in corejava?

Samsung,

2 8234

how to prepare for IT Officers Interview in Banks

TATA, Tata Steel Limited,

1972

Is Cegonsoft Pvt.Ltd. a good Institute?

4 6949

GoldMansachs Interview process....

Goldman Sachs,

1 11612

Hi all, I am dng a mini project on FileSplitter application which splits the GBs of logfile into Smaller chunks(mbs) depending on the split size." How to handle GBs file? I am getting OutOfMemoryException, when I input such GB sized file. Thx

2134

The class "Class" is belongs to which package?? a) java.lang b)java.lang.reflect c)java.util d)None

4 9368

which of tha following is not a thread safe class? a) ArrayList b)Vector c)HashTable d)None

17 20153

Explain the role played by Java Virtual Machine in Java Programming?

1 6183

Explain role of constructor in a java application?

5 14221

Where can i get Latest SUN Certification Dumps and what are the Sun Certification Codes that are available, Im new to JAVA, so please gimme info as i need to write J2EE - Core Java Certification

1866

This is my code i have a doubt class ab implements a,b { public void add() { System.out.println("Hi") } } interface a { public void add(); } interface b { public void add(); } in this code i have two interface implemented in the class has same method.just i want to know which method of interface implemented in the class. interface a or interface b? confused me .

3 5085

IN java collections we have both interfaces and classes. instead of using interfaces why we can't use classes only like that why we can't use interfaces only. why we need two things interface and class.

Accenture, CTS,

6 10601

Differences between jdk 1.4 and 1.5

SoftSol, TCS, Wipro,

6 17585

what happens when we add the objects morethan the size limit to a hashmap

1 4283

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Un-Answered Questions { Core Java }

How many days will it take to learn java?

935

Why are generics used?

964

What is bufferedwriter?

973

What is collection class in java?

1007

What is codebase?

1004

What is difference between null and void?

975

Can a class extend 2 classes in java?

1036

What are default methods ?

1046

When can an object reference be cast to an interface reference in java programming?

1023

How many arguments can a method have java?

1025

I want to re-reach and use an object once it has been garbage collected. Define how it’s possible?

1016

what is difference betweem home interface and remote interface?

2634

Is java same as core java?

1094

Differentiate between stringbuffer and string?

1024

Which sorting algorithm is in place?

969

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