Computer Application- ICAR JRF/SRF 2024

• Combinatorics - Permutation vs. Combination:
• Permutation of a set of $n$ elements is an arrangement of the elements in a specific, definite order:

• Combination is a selection of elements where the order of arrangement does not matter:

• Conclusion: An arrangement in a given order is a Permutation (Option 2).

Correct option: (2) Permutation

• Polymorphism in Java Programming:
• Java supports two fundamental types of polymorphism:

• Compile-time Polymorphism (Static Polymorphism): Resolved during code compilation. Achieved via Method Overloading (same method name with different parameter signatures).
• Runtime Polymorphism (Dynamic Polymorphism): Resolved dynamically at execution time. Achieved via Method Overriding (subclass provides specific implementation of a superclass method).
  • Among the given options, Compile Polymorphism correctly represents compile-time polymorphism.

• Conclusion: Compile Polymorphism (Option 2).

• Java Exception Handling Keywords:
• throw: Keyword used to explicitly throw or generate an exception from any method or block of code (e.g., throw new ArithmeticException("Divide by zero");).
• throws: Keyword used in method signatures to declare the exceptions that the method might throw.
• try: Encloses the block of code to monitor for exceptions.
• catch: Handles the specific exception thrown by a try block.
• Conclusion: An exception is explicitly generated using throw (Option 3).

Correct option: (3) Throw