Asterisk (*) pattern in Java …FTC

Write a java program to display the following patterns.

Input:  5

Output:
*
***
*****
*******
*********

import java.io.*;
import java.util.*;
public class temp {
  public static void main(String[] args) {
    Scanner scan = new Scanner(System.in);
    int a,n;
    System.out.println("Enter a number:  ");
    a = scan.nextInt();
    n = a*2;

    for(int i = 0; i<=n; i++){
      if (i%2 == 0) continue;
      for(int j = 1; j<=i;j++){
        System.out.print("*");
      }
      System.out.println();
    }  
  }
}

INPUT_1:
Enter a number:
5

OUTPUT:
*
***
*****
*******
*********

INPUT_2:
Enter a number:
4

OUTPUT:
*
***
*****
*******

INPUT_3:
Enter a number:
6

OUTPUT:
*
***
*****
*******
*********
***********

INPUT_4:
Enter a number:
7

OUTPUT:
*
***
*****
*******
*********
***********
*************

INPUT_5:
Enter a number:
9

OUTPUT:
*
***
*****
*******
*********
***********
*************
***************
*****************

INPUT_6:
Enter a number:
15

OUTPUT:
*
***
*****
*******
*********
***********
*************
***************
*****************
*******************
*********************
***********************
*************************
***************************
*****************************

ILLUSTRATION