Chapter_14_ps.java

//* Practice Set of the Exception Handling

import java.util.Scanner;

// ? Make Custom Exception
// Question-4
class ExceptionRetry extends Exception {
    
    /** 
     * @return String
     */
    @Override
    public String getMessage() {
        // TODO Auto-generated method stub
        return "Error!";
    }
}

public class Chapter_14_ps {
    // Question-5
    public static void throwException(int i) throws ExceptionRetry {
        if (i <= 5) {
            throw new ExceptionRetry();
        }
    }

    public static void main(String[] args) {
        // Write a java program to demonstrate syntax, logical 2 runtime errors.
        // Question-1 Syntax Error
        // int num1 = 10 // This is syntax error i am add the semicolon at the end of
        // the line

        // Question-1.2 Logical Error
        int num1 = 10;
        if (num1 == 11) {
            System.out.println("I am 11");
        } else {
            System.out.println("I an not 11");
        }
        // * Output: I am not 11

        // Question-2 Write a java program that prints "HaHa" during Arithmetic
        // exception and "HeHe" during an Illegal argument exception.
        try {
            int a = 5;
            int b = 0;
            int c = a / b;
            System.out.println(c);
        } catch (IllegalArgumentException e) {
            // TODO: handle exception
            System.out.println("Hehe");
        } catch (ArithmeticException a) {
            System.out.println("Haha");
        }

        // Question-3
        boolean flag = true;
        int[] marks = new int[5];
        marks[0] = 10;
        marks[1] = 20;
        marks[2] = 30;
        marks[3] = 40;
        marks[4] = 50;

        // Create instance of the Scanner class
        Scanner sc = new Scanner(System.in);
        int index;
        int i = 0;
        while (flag || i < 5) {
            try {
                index = sc.nextInt();
                System.out.printf("The value of marks[%d] is : %d", index, marks[index]);
                break;
            } catch (Exception e) {
                // TODO: handle exception
                System.out.println("Invalid Index!");
                i++;
            }
        }
        if (i >= 5) {
            try {
                throw new ExceptionRetry();
            } catch (Exception e) {
                // TODO: handle exception
                System.out.println("Error");
            }
        }
        sc.close();
    }
}