44_ExceptionHandling

        //exception = an event that occurs during the execution of a program that, 
        // disrupts the normal flow of instructions
       
//ARITHMETIC EXCEPTION
>> Enter a whole number to divide: 
5
Enter a whole number to divide by: 
0
Exception in thread "main" java.lang.ArithmeticException: / by zero
	at Main.main(Main.java:14)
  
//InputMismatchEzception
>>Enter a whole number to divide: 
g
Exception in thread "main" java.util.InputMismatchException
	at java.base/java.util.Scanner.throwFor(Scanner.java:943)
	at java.base/java.util.Scanner.next(Scanner.java:1598)
	at java.base/java.util.Scanner.nextInt(Scanner.java:2263)
	at java.base/java.util.Scanner.nextInt(Scanner.java:2217)
	at Main.main(Main.java:10)
  
  // Exception in thread "main" java.util.*ExceptionToBeUsed*
 // Better handle specific, or else catch(Exception e) to catch ALL in the end
// finally will always print, good to use for scanner.close();

<Main.java>
import java.util.*;
public class Main{
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
    try {
        System.out.println("Enter a whole number to divide: ");
        int x = scanner.nextInt();

        System.out.println("Enter a whole number to divide by: ");
        int y = scanner.nextInt();

        int z = x / y;
        System.out.print("result: " + z);
    }
    catch(ArithmeticException e){ //if arithmetic error print this
        System.out.println("You can't divide by zero! IDIOT!");
    }
    catch(InputMismatchException e){
        System.out.println("PLEASE ENTER A NUMBER OMFG!!!");
    }
    catch(Exception e){
        System.out.println("Something went wrong");
    }
    finally{
        System.out.println("\nThis will always print");
        scanner.close();
    }
    }
}