17/02/25
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Q)Java Program that terminates abnormally if exception is raised  but not handled.
//WithoutHandling.java
import java.util.Scanner;
class WithoutHandling{
	public static void main(String[] args) {
		int quotient=1;//identity of division
		System.out.println("Program started");
		Scanner scanner=new Scanner(System.in);
		System.out.print("Enter the numerator:");
		int n=scanner.nextInt();
                System.out.print("Enter the denominator:");
		int d=scanner.nextInt();
		quotient=n/d;
		System.out.println("Quotient is "+quotient);
		System.out.println("Program ended successfully");
	}
}

Q)Explain about "try" in the context of exception handling.


=>one of the 5 keywords of eh m.
=>we can create a block of code 
try{

}//try block

=>"try" is one of the 5 keywords of Java exception handling mechanism.
=>"try" keyword is used to create a block of code.
=>risky code(that may cause exception) is placed in try block.
=>If exception is raised in try block, instead of program getting terminated, try block
gets terminated.

Q)Explain about "catch" in the context of exception handling.

=>"catch" is one of the 5 keywords of exception handling mechanism.

=>"catch" keyword is used to create a block of code.

=>exception handling code is written in catch block and therefore it is known
as an exception handler.

=>Between try and catch blocks no code is allowed.

=>If exception is raised in the try block, control goes to catch block.

=>If exception is not raised in the try block, control never goes to catch block.

=>One try block can be associated with any number of catch blocks.

Q)Modify the previous application(Withouthandling.java)so as to implement exception handling.
//WithHandling.java
import java.util.Scanner;
class WithHandling{
	public static void main(String[] args) {
		int quotient=1;//identity of division
		System.out.println("Program started");
		Scanner scanner=new Scanner(System.in);
		System.out.print("Enter the numerator:");
		int n=scanner.nextInt();
                System.out.print("Enter the denominator:");
		int d=scanner.nextInt();
		try{
		       quotient=n/d;//risky code
			   System.out.println("Quotient is "+quotient);
		}catch(ArithmeticException e){
                     System.out.println("Division failed. Please ensure that denominator is not zero");
                }//exception handler
		System.out.println("Program ended successfully");
	}
}