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

TCS,

2 7511

What is meant by wrapper classes?

 3 7929

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

 2 26172

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

Wipro,

7 9510

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 3223

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

 1 3232

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

 4 5182

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

 2 3857

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).

 1562

Is there memory leaks in java?

 3 4784

Need to use public,static keywords in main function?

5 5831

How core java/j2ee project performance can be measured ?

 1 3194

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 6393

How Marker Interfaces are instruct to complete the desired need ?

 2 3358

Matrix multiplication only using OOP concepts .

 3530

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Un-Answered Questions { Core Java }

Is an object null?

585

What is set in java?

566

Which collection is sorted in java?

584

What is a line break example?

610

What will be the initial value of an object reference which is defined as an instance variable?

681




What is string [] args?

587

Why does java have two ways to create child threads?

498

Which class cannot be a subclass in java?

579

Does windows 10 need java?

632

What is private protected in java?

583

What are the two types of java programming?

584

What is difference between fail-fast and fail-safe?

620

What is the difference between superclass and subclass?

574

What is an example of a constant variable?

586

How does the java compiler work?

561

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