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 4619

why we r not use pointers in corejava?

Samsung,

2 8365

how to prepare for IT Officers Interview in Banks

TATA, Tata Steel Limited,

2020

Is Cegonsoft Pvt.Ltd. a good Institute?

4 7107

GoldMansachs Interview process....

Goldman Sachs,

1 11712

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

2181

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

4 9534

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

17 20661

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

1 6259

Explain role of constructor in a java application?

5 14416

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

1939

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 5232

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 10815

Differences between jdk 1.4 and 1.5

SoftSol, TCS, Wipro,

6 17783

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

1 4360

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Un-Answered Questions { Core Java }

Can a main method be declared final?

1105

Where are global variables stored?

1012

What is the exact difference in between Unicast and Multicast object? Where will it be used?

1108

What do you mean by scope of variable?

943

What is length in java?

1062

Is nullpointerexception checked or unchecked?

1074

How does arraylist work in java?

1174

What is data type modifier?

991

Why do we use regex?

1084

Explain the purpose of garbage collection in Java?

1080

What is int lol?

1190

What are the 2 types of java programs?

1159

What is the impact of declaring a method as final?

1072

what is method reference in java 8?

1094

how we can make a read-only class in java?

1041

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