Write a Java program for triangle of asterisks with maximum length of user input

import java.util.Scanner;  
       
     public class ScanTri 
 {  
         public static void main (String[] args)  
     {  
             System.out.println("Enter the Size of a triangle, an integer from 1 to 50 please.");  
       
             Scanner scan = new Scanner(System.in);  
             int min, max;  
             int tot = scan.nextInt();  
               
             for(min = 0; min <= tot; min++) 
           {  
                 for(max = 0; max < min; max++) 
                {  
                     System.out.print("*");  
                 }  
                 System.out.println();  
             }  
             for(min = tot-1; min >= 0; min--) 
            {  
                 for(max = min-1; max >= 0; max--) 
                {  
                     System.out.print("*");  
                 }  
                 System.out.println();  
             }  
       
         }  
       
     }