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Interview Questions and Answers for 'Mathworks' - 10 question(s) found - Order By Newest

Basic and Very Frequently asked.
  Q1. What is Polymorphism in Java ?Core Java2016-11-06 09:10:54

Ans. Polymorphism means the condition of occurring in several different forms.

Polymorphism in Java is achieved in two manners

1. Static polymorphism is the polymorphic resolution identified at compile time and is achieved through function overloading whereas

2. Dynamic polymorphism is the polymorphic resolution identified at runtime and is achieved through method overriding.

  Sample Code for overloading

  Sample Code for overriding

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Try 2 Question(s) Test


 Q2. Difference between PATH and CLASSPATH ?Operating System
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Ans. PATH is the variable that holds the directories for the OS to look for executables. CLASSPATH is the variable that holds the directories for JVM to look for .class files ( Byte Code ).

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 Q3. What is classpath in a project?Core Java
Admin
info@buggybread.com
Ans. ClassPath is the path where Java looks for class files to resolve the dependencies. For example - If you are using a class "xyz" in your code and have specified the respective import, Where should Java look for the definition of xyz. Java determines using the class path settings.

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  Q4. 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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Try 1 Question(s) Test


Very Frequently asked to Senior Software Engineers or Developers.
  Q5. Describe some of the Design Patterns you have used ?Design2016-12-01 16:31:17

Ans. [Open Ended Answer]

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 Q6. What is priority inversion inheritance method?2017-03-08 12:06:47

Ans. https://en.wikipedia.org/wiki/Priority_inversion

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 Q7. What is Priority inversion ?Operating System2017-03-08 12:19:40

Ans. Priority inversion is a problematic scenario in scheduling in which a high priority task is indirectly preempted by a lower priority task effectively inverting the relative priorities of the two tasks.

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 Q8. What is TypeCasting ?Core Java2018-07-30 08:40:18

Ans. Assigning a value of one type to a variable of another type is known as Type Casting.

Example :

int x = 10;
byte y = (byte)x;

In Java, type casting is classified into two types, Widening Casting(Implicit) widening-type-conversion and Narrowing Casting (Explicitly done) narrowing-type-conversion.

Widening or Automatic type converion - Automatic Type casting take place when,the two types are compatible and the target type is larger than the source type

Example :

public class Test {
public static void main(String[] args) {
int i = 100;
long l = i; //no explicit type casting required
float f = l;//no explicit type casting required
System.out.println("Int value " i);
System.out.println("Long value " l);
System.out.println("Float value " f);
}
}

Narrowing or Explicit type conversion - When you are assigning a larger type value to a variable of smaller type, then you need to perform explicit type casting.

Example :

public class Test{
public static void main(String[] args) {
double d = 100.04;
long l = (long)d; //explicit type casting required
int i = (int)l;//explicit type casting required
System.out.println("Double value " d);
System.out.println("Long value " l);
System.out.println("Int value " i);
}
}

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 Q9. C dynamic memory questions2019-05-03 07:57:12

 This question was recently asked at 'MathWorks'.This question is still unanswered. Can you please provide an answer.


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   Like      Discuss      Correct / Improve          MathWorks



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 Q10. Write program to control traffic in a parking lot.Design2019-05-06 11:36:01

 This question was recently asked at 'MathWorks'.This question is still unanswered. Can you please provide an answer.


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   Like      Discuss      Correct / Improve          MathWorks




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