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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,

1899

How we get some middle records in one table?

3i Infotech,

2 5500

tell me some common

TCS,

2 3642

Which is the best way of exception handling?

Oracle,

2 5988

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

eClinical Solutions, eClinical Works, eClinicalWorks,

1 6421

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

 1 3213

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

Arfin, TCS,

2 4397

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

IBS,

1 5816

what is the diffrences between platform independent and portable

TCS,

5 21683

Java support call by reference (pass by reference) ?

HCL,

1 3877

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 5100

difference between vectorlist and hash

TCS,

1 3593

why HashTable not allow null key and value

Crimson Logic,

2 21388

why string constant pool in java

TCS,

2 8027

why top level class could not be static

L&T,

3 11784

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Un-Answered Questions { Core Java }

What is hashset in java?

569

what is mutual exclusion? How can you take care of mutual exclusion using java threads? : Java thread

711

Define reflection.

603

Can java hashmap have duplicate keys?

538

What is dynamic binding(late binding)?

632




Can we have a try block without catch block?

595

Can we override static methods in java?

612

What is the final keyword in java?

591

Is main an identifier?

576

What are the uses of synchronized keyword?

586

does java support pointers?

598

Which is the best approach for creating thread ?

761

Is java a pure object oriented language?

567

Can abstract class have private constructor?

531

What is the statements?

624

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