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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 6705

What is meant by wrapper classes?

3 6807

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

2 19090

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

Wipro,

7 7936

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 2594

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

1 2627

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

4 4038

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

2 3117

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).

1184

Is there memory leaks in java?

3 3728

Need to use public,static keywords in main function?

5 4325

How core java/j2ee project performance can be measured ?

1 2610

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 5312

How Marker Interfaces are instruct to complete the desired need ?

2 2480

Matrix multiplication only using OOP concepts .

3080


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Un-Answered Questions { Core Java }

Is it possible to use Semaphore/ Mutex in an Interrupt Handler?

207


What is the purpose of static methods and static variables?

166


What is javac_g?

190


Which is better singleton or static class?

139


What are the benefits of java?

153






What is the purpose of return statement?

147


What is join () in java?

129


What restrictions are placed on method overloading?

158


What is primitive data type in java?

153


What are different types of classloaders?

210


Write a method to check if input string is palindrome?

197


What is difference between path and classpath in java?

165


what r advatages of websphere? & how to deploy?

1258


How many tetrahedral voids are there in bcc?

139


Is null an object java?

148