import java.util.Scanner;
class DecimalToHexa {
    public static void main(String args[]) {
        int n = 0;
        Scanner in = new Scanner(System.in);

        System.out.println("Enter a number ");
        n = in.nextInt();
        for(int i=1; i<=n; i++) {
            System.out.println(i + "t" +  Integer.toHexString(i));
        }

    }
}

Enter a number 14
1   1
2   2
3   3
4   4
5   5
6   6
7   7
8   8
9   9
10  a
11  b
12  c
13  d
14  e

public static void main(String args[]) {
    int n = 0;
    Scanner in = new Scanner(System.in);

    System.out.println("Enter a number ");
    n = in.nextInt();
    for (int i = 1; i <= n; i++) {
        System.out.println(i + "t" + Integer.toHexString(i).toUpperCase());
    }
}

Integer.toHexString(i).toUpperCase()