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Core Java Interview Questions
Questions Answers Views Company eMail

How to decrease number of hashings in has

 1 3087

Is it safe for adding 10,00,000 records/objects to HashMap?, i.e is it safe to add millions of objects to HashMap?

 2 5138

What is the difference between pageContext and page implicit objects in jsp?

Gspann Technologies, Merrill Lynch, Polaris,

9 36163

What is the purpose of premetive data types in java?

Merrill Lynch, TCS,

2 7160

Howmany number of objects we can store in an ArrayList. Is there any limit?

TCS,

7 12431

What is the basic functionality of DataOutput interface in java?

TCS,

2 5158

Can we inherit the constructor in a Class?please give one example.

iGate,

9 16962

Why do we use public static with the main function in Java?

College School Exams Tests, Infosys,

13 17104

What is the difference between overloading and overriding a function?

eG Innovations, Infosys, TCS,

13 20279

when we have to use final class in java?

 2 6922

how to minimize the functionality to will not force garbage collector?

 2 3562

Life Cycle of Thread

IBM,

4 9598

what is the difference between Cpp And Java

Infosys,

15 23412

what is the use of reference variable

 6 20469

What is unicode?

 5 8292

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Un-Answered Questions { Core Java }

What is the impact of declaring a method as final?

556

Can inner class have constructor?

545

How many bits is a char?

533

What are basic data types?

556

What are abstract methods in java?

645




Write a function for palindrome and factorial and explain?

654

What is immutable state?

502

Explain listiterator and methods in listiterator?

543

Why synchronization is important?

584

Why are lists ordered in java?

541

Explain an algorithm to find depth of a binary tree.

544

What are peerless components?

616

Can we override compareto method?

498

What is static keyword?

589

What is the indent key?

587

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