When compiling it shows right answer but on submitting it shows compilation error

#1

import java.util.*;
public class Main {
public static void main(String args[]) {
Scanner scn = new Scanner(System.in);
int n = scn.nextInt();
int [] arr = new int[n];
for (int i = 0; i<arr.length; i++) {
arr[i] = scn.nextInt();
}
insertion(n, arr);
}

public static void insertion(int n, int a[]) {
	for (int i = 0; i < a.length; i++) {
		int temp = a[i];
		int j = i - 1;
		while (j >= 0 && a[j] > temp) {
			a[j + 1] = a[j];
			j--;
		}
		a[j + 1] = temp;
	}
	for (int i = 0; i < a.length; i++) {
		System.out.println(a[i]);
	}
}

}

#2

This is happening because you should take input of n using scanner.nextLine() and not scanner.nextInt() since it takes space delimited input.

#3

pls explain because it is not working with that

#4

use int n = Integer.parseInt(scanner.nextLine());

#5

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#6

still not working it is showing error , want to know where this is taught in the videos?

#7

Did you try using scanner.nextLine() like I told you ? If you did, please post your solution here.