import java.io.*;
import java.lang.*;
class Num
{
    public static void main(String args[])throws IOException
    {
        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
        System.out.println("Enter the number:");
        int n=Integer.parseInt(br.readLine());
        System.out.println("Numbers are");
        for(int i=1; i<=n; i++)
            System.out.println(i);
    }
}

 OUTPUT:

Compile :javac Num.java
Run :java Num
Enter the number:
8
Numbers are
1
2
3
4
5
6
7
8