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Core Java Interview Questions
Questions Answers Views Company eMail

How to count occurrences of each duplicate element in a list {a,b,d,c,a,b} ? Thanks in Advance

TCS,

2 7149

What is meant by wrapper classes?

3 7457

how to get the max salary and name of employee from arraylist without using the Comperator or even Comparable interface?

2 24415

how can i take the inputs from users in java program?

Wipro,

7 8790

HOW TO PRINT A NO IN WORDS USING WHILE LOOP THE NO WILL BE PRINTED WHEN IT WILL BE IN THE RANGE BETWEEN 1 AND 3?

1 2925

hoe can u call a constructor of a private classs to other inherited claa??

1 2938

how can be object class inherited to all class in a program when java does not support multiple inheritance??

4 4654

can two class in a code be public??if yes then how??

2 3504

take an array with -ve and +ve value both.find out the nearest value of 0(zero).if two values are same like(-2 and +2)then extract +2 is nearest of 0(zero).

1387

Is there memory leaks in java?

3 4284

Need to use public,static keywords in main function?

5 5156

How core java/j2ee project performance can be measured ?

1 2932

If there are two notepad opened and working on it . is this a process or thread? computer based Live Example to differentiate between Thread , Process , and Multi tasking ?

TCS, Wipro,

3 5888

How Marker Interfaces are instruct to complete the desired need ?

2 2925

Matrix multiplication only using OOP concepts .

3327


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Un-Answered Questions { Core Java }

What is the new line character?

394


Which method cannot be overridden in java?

414


Explain about the main() method in java?

406


Does constructor creates the object ?

419


What is meant by method?

403






Is void a wrapper class?

361


How do you stop a thread in java?

398


Why main method is called first in java?

387


Define a java class.

532


How does hashset works in java?

381


How do you define a singleton class?

350


How do you ensure that n threads can access n resources without deadlock?

609


What is string in java? String is a data type?

429


What is classpath?

393


Using callable statement how can you pass out parameters, explain with example?

409