Core java - Interview Questions and Answers for 'Mahindra satyam' | Search Interview Question

Core java - Interview Questions and Answers for 'Mahindra satyam' - 3 question(s) found - Order By Newest

Very frequently asked. Favorite question in Walk in Drive of many Indian service companies.

Q1. What is a final method ?

Ans. Its a method which cannot be overridden. Compiler throws an error if we try to override a method which has been declared final in the parent class.

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Related Questions

What is the difference between final, finally and finalize() ?

Difference between final and effectively final ? Why is effectively final even required ?

Which of the following combination of keywords is illegal in Java ?

a. static and transient
b. transient and final
c. static and synchronized
d. abstract and final

Which keyword is used to provide explicit access of a code block to single thread ?

a. Transient
b. Final
c. Explicit
d. Synchronized

Enums cannot be declared ..

What is a Final Variable ?

Should we override finalize method ?

Will the static block be executed in the following code ? Why ?

Can we override compareTo method for Enumerations ?

Frequently asked in face to face interviews.

Q2. Write a program to print fibonacci series.

Core Java

Ans. int count = 15;
int[] fibonacci = new int[count];
fibonacci[0] = 0;
fibonacci[1] = 1;
for(int x=2; x < count; x++){
fibonacci[x] = fibonacci[x-1] + fibonacci[x-2];
}

for(int x=0; x< count; x++){
System.out.print(fibonacci[x] + " ");
}

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What are the steps to be performed while coding Junit with Mocking framework ?

What is a Sequence File?

What different level of logging you use while coding ?

Have you ever encoded the response before sending it back from the service? If Yes , Which encoding was used ?

What are the different type of encoding you have used ?

How does encoding affect using Reader / writer classes or Stream classes in Java ?

What is the difference between html encoding and url encoding ?

Does spaces get's encoded in html encoding ?

Q3. What is a Destructor ? Do we have Destructors in Java ?

Core Java

Ans. Destructor is used to de-allocate memory allocated by objects.

There are no destructors in Java. Alternatively, Java provides Automatic garbage collection i.e automatically releasing the un-referenced memory.

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What are constructors and Destructors in Java ?

Why don't Java objects have destructors ?

In Java, would you like to see an explicit destructor?

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