Java For Android Tutorial #12: Throwing an exception - Illegalargumentex...

Code:

package com.example;public class java {

    public static void main(String[] str) {

        int marks = 91;

        if (marks < 0 || marks > 100){

                throw new IllegalArgumentException

                         (Integer.toString(marks));

        }

        else{

            System.out.println("Marks are okay");}}}

You can throw custom exceptions with/without meeting any condition. This is dangerous but presents great benefits, if handled properly. I have taken an example of a student. And if the marks does not lie in minimum and maximum range, it will throw an error. I have used illegal argument exception and if statement to prove this concept.