3) Write a program named Full_XmasTree using a nested for loop that will generate the exact output. This program MUST use (ONLY) for loops to display the output below. For example the 1st row prints 1 star 2nd row prints 2, the 3rd row print 3 stars and so forth... This program is controlled by the user to input for the amount of row. "Prompt the user to enter the dimensions of the tree" A good test condition is the value of ten rows. (hint***)This program should account for white spaces print("* "). Remember the purpose of print() and println()

Following are the code to this question:

//import package

import java.util.*;  

public class Full_XmasTree   //defining class

{        

// defining main method

public static void main(String as[])  

   {  

       int X,a,b; //defining integer variable

       Scanner obx = new Scanner(System.in); // creating Scanner class object

       System.out.print("Please enter: "); //print message

       X = obx.nextInt(); // input value from user

       for (a = 0; a < X; a++) //defining loop to print pattern  

       {

           for (b = X - a; b > 1; b--)//use loop for print white space  

           {

           System.out.print(" ");//print space

           }

           for (b = 0; b <= a; b++) // use loop to print values  

           {

               System.out.print("* "); //print asterisk values

           }

           System.out.println(); //using print method for new line

       }

   }

}

Output:

please find the attachment.

Explanation:

In the given java code, a class "Full_XmasTree" is declared, in which the main method is declared, inside this method three integer variable "X, a, and b", in this variables "a and b" is used in a loop, and variable X is used for user input.