Core Java Interview Questions
Questions Answers Views Company eMail

How to declare an arraylist in java?

473

Why string is not thread safe?

526

What is complexity and its types?

518

What are heterogeneous objects?

559

Does java vector allow null?

528

Can a class have 2 constructors?

488

What is time complexity algorithm?

538

What is java util hashmap?

507

Can constructor be protected in java?

497

What does system out println () do?

546

Can static methods be inherited?

524

Can we convert list to set in java?

500

What are sets in java?

496

What is hashmap in java?

556

Are arrays static in java?

573


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Un-Answered Questions { Core Java }

What are the pillars of java?

480


Explain the differences between static and dynamic variables?

573


Given a singly linked list, find the middle of the list in a single traversal without using temporary variable.

602


What is the final class modifier?

550


Is java jre still free?

517






What is internal iteration in java se 8?

619


What is a ternary operator in java?

524


which class is the wait() method defined in? : Java thread

513


State the main difference between c++ and java?

581


What is token in java?

523


What does java se mean?

583


How do you declare an array that will hold more than 64KB of data?

630


What methods are used to get and set the text label displayed by a button object?

542


Explain the use of volatile field modifier?

621


What are controls and their different types in awt?

591