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Core Java Interview Questions
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Which collections are thread safe in java?

 471

Which data type is class in java?

 545

Why are arrays useful in java?

 536

What is a dynamic array in java?

 556

What is maximum size of arraylist in java?

 483

Which collection is sorted in java?

 538

What is entry set in java?

 522

What is difference between array and arraylist in java?

 454

What is hash table in java?

 484

What is the maximum size of byte array in java?

 528

What is hash in java?

 507

What is sortedmap in java?

 545

What is natural ordering in java?

 517

What is initial size of arraylist in java?

 530

What is getkey () in java?

 564

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Un-Answered Questions { Core Java }

What is string buffer?

498

How many bits is a double?

522

Is null == null in java?

641

Can we write method inside a method in java?

517

What is the escape character in java?

502




How objects are stored in java?

540

What is a linkedhashmap java?

539

Is alive in java?

499

Can you explain the final method modifier?

557

How to display all the prime numbers between 1 and 100

493

What do you understand by java virtual machine?

699

What is static keyword?

583

In how many ways we can create threads in java?

619

What is main function purpose?

513

Is java call by value?

577

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