Question

Identify and correct the error in the following codes, and state what type of error you will get?

public class Assignmet2{

     public static void main(String []args){

       int x=2;

       for(int year=1; year>=0; year--)

         for (int day=2; day!=3; year++)

           {if ( x>=1) System.out.println("Yes");

           else System.out.println("No");

           x--;} }}

int[] grade = new int[20];

for(int counter=0; counter<=grade.length; i++)

grade[counter]=20;

Answer 1

The error with the code is that the inner for loop will run infinitely and will give infinite run error as in the inner for loop, the value of year is incremented and hence, the value of day is not changed. So, the inner for loop will run infinitely.

So, in order to correct the program, we need to change the value of day at the end of each execution of the loop.

So, the correct code is

public class Assignmet2{

     public static void main(String []args)

     {

       int x=2;

        for(int year=1; year>=0; year--)

        {

            // increment the value of day after each loop iteration

            for (int day=2; day!=3; day++)

            {

               if ( x >= 1)

                   System.out.println("Yes");

                else

                    System.out.println("No");

                x--;

            }

        }

    }

int[] grade = new int[20];

// also there is no variable i. This will give ElementNotFound error

//for(int counter=0; counter<=grade.length; i++)

for(int counter=0; counter<=grade.length; counter++)

    grade[counter]=20;