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Core Java Interview Questions
Questions Answers Views Company eMail

What are default methods ?

 582

Does constructor creates the object ?

 588

What are the difference between composition and inheritance in java?

 517

How is abstraction implemented in java ?

 546

Can we use string in the switch case?

 579

How hashset works internally in java?

 589

What is the role of the java.rmi.naming class?

 530

What are untrusted applets?

 592

Can you access non static variable in static context?

 561

Why java does not support pointers?

 563

What is the use of callablestatement?

 580

What is the importance of hashcode() and equals() methods?

 585

How do you print array in java?

 560

Why string objects are immutable in java?

 569

What an i/o filter?

 567

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Un-Answered Questions { Core Java }

What is == in java?

570

Is string is a data type?

571

What is the difference between class & structure?

571

How will you serialize a singleton class without violating singleton pattern?

1528

What are the 8 primitive data types in java?

549




How does varargs work in java?

615

What is parsing a sentence?

550

Explain the overview of UDP messaging.

737

what are Hostile Applets?

1608

How garbage collection is done in java?

551

Differentiate between stringbuffer and string?

600

What is better - 'bit-shift a value' or 'multiply by 2'?

701

Why is singleton not thread safe?

654

What is static import in java?

534

What java ide should I use?

574

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