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Core Java Interview Questions
Questions Answers Views Company eMail

what are the disadvantages of indexes in oracle?

3i Infotech, Wells Fargo,

1701

How we get some middle records in one table?

3i Infotech,

2 5107

tell me some common

TCS,

2 3254

Which is the best way of exception handling?

Oracle,

2 5595

what is the difference between System.exit() and System.exit(1)?

eClinical Solutions, eClinical Works, eClinicalWorks,

1 5976

Can there be an abstract class with no abstract methods in it?

1 2939

can any one send me the example program of immutable class?

Arfin, TCS,

2 3943

There are 100 keys and values in HashMap.how to get the keys and values?

IBS,

1 5433

what is the diffrences between platform independent and portable

TCS,

5 19394

Java support call by reference (pass by reference) ?

HCL,

1 3568

System.out & System.in are final static data member of System class but we can change there reference through setOut() & setIn() method how...

FCS, TCS,

2 4689

difference between vectorlist and hash

TCS,

1 3302

why HashTable not allow null key and value

Crimson Logic,

2 20378

why string constant pool in java

TCS,

2 7525

why top level class could not be static

L&T,

3 11077


Post New Core Java Questions

Un-Answered Questions { Core Java }

Explain the importance of thread scheduler in java?

442


What is the difference between post and put?

386


Explain the importance of throwable class and its methods?

418


What do you mean by object?

395


What is logical variable?

348






How can I debug the Java security exceptions and AccessControlExceptions?

441


What are the two environment variables that must be set in order to run any java programs?

372


What is final keyword in java?

398


What is meant by object?

430


Is arraylist ordered in java?

390


Why wait and notify methods are declared in object class?

403


How does thread synchronization occurs inside a monitor?

388


what is singleton class in java?

447


What are thread groups?

412


What is math floor in java?

321