3.24 Program: Drawing a half arrow (Java) This program outputs a downwards facing arrow composed of a rectangle and a right tria

Answer:

This is the JAVA code:

import java.util.Scanner; // to capture user input

public class DrawHalfArrow{ // class declaration

public static void main(String[] args) { // main function starts here

    Scanner scnr = new Scanner(System.in); //input reading

int arrowBaseHeight = 0; // variable for arrow base height

int arrowBaseWidth  = 0; // variable for arrow base width

int arrowHeadWidth = 0; // variable for arrow head width

// prompts user for height, base width, and head width

System.out.println("Enter arrow base height: ");

arrowBaseHeight = scnr.nextInt(); // reads integer input

System.out.println("Enter arrow base width: ");

arrowBaseWidth = scnr.nextInt();

/* loop for asking user for arrow head width until it exceeds base width */

while (arrowHeadWidth <= arrowBaseWidth) {

    System.out.println("Enter arrow head width: ");

    arrowHeadWidth = scnr.nextInt(); }

//begin nested loop for base

//outer loop for outputting based on arrow base height

 for (int i = 0; i < arrowBaseHeight; i++) {

//inner loop produces the stars

      for (int j = 0; j <arrowBaseWidth; j++) {

          System.out.print("*");        } //prints stars

          System.out.println();          }

//used for the width of the arrowhead

int k = arrowHeadWidth;

//outer loop for the head height

for (int i = 1; i <= arrowHeadWidth; i++)

{     for(int j = k; j > 0; j--)     {//inner loop for stars

       System.out.print("*");    } //print stars

   k = k - 1;

   System.out.println(); } } } //marks end of asterisks for a new line

Explanation:

The code prompts for arrow dimensions, including height, base width, and head width. The program verifies that the head width must be larger than the base width through a condition. This loop instigates until the user provides a valid head width.

The loop manages the output of the arrow base corresponding to the specified height. Thus point (1) is fulfilled.

A nested loop is utilized to present an arrow base matching the defined width. The inner loop creates stars, establishing the width for the base, while the outer loop iterates according to the specified height. This satisfies point (2).

A temporary variable, k, saves the initial arrow head width for necessary adjustments.

The final nested loop outputs an arrow head corresponding to the specified width with stars. Therefore, point (3) is achieved.

The value of k decreases by 1 for each execution of the nested loop, ensuring each subsequent line contains fewer stars.

The output screenshot is attached.