Drawing a half arrow (Java)

Question

Is anyone able and willing to help me? Here is the task:

This program outputs a downwards facing arrow composed of a rectangle and a right triangle. The arrow dimensions are defined by user specified arrow base height, arrow base width, and arrow head width.

(1) Modify the given program to use a loop to output an arrow base of height arrowBaseHeight. (1 pt)

(2) Modify the given program to use a loop to output an arrow base of width arrowBaseWidth. Use a nested loop in which the inner loop draws the *’s, and the outer loop iterates a number of times equal to the height of the arrow base. (1 pt)

(3) Modify the given program to use a loop to output an arrow head of width arrowHeadWidth. Use a nested loop in which the inner loop draws the *’s, and the outer loop iterates a number of times equal to the height of the arrow head. (2 pts)

(4) Modify the given program to only accept an arrow head width that is larger than the arrow base width. Use a loop to continue prompting the user for an arrow head width until the value is larger than the arrow base width. (1 pt)

while (arrowHeadWidth <= arrowBaseWidth) {

// Prompt user for a valid arrow head value

}

I need help figuring out how to make this half arrow work with inputs of: arrow base height: 5, arrow base width: 2, and arrow head width:4

I am close, but it one row to tall, to start with, and I'm not sure what else is wrong.

Someone please help.

public class DrawHalfArrow {

public static void main(String[] args) {

Scanner scnr = new Scanner(System.in);

int arrowBaseHeight = 0;

int arrowBaseWidth = 0;

int arrowHeadWidth = 0;

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

arrowBaseHeight = scnr.nextInt();

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

arrowBaseWidth = scnr.nextInt();

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

arrowHeadWidth = scnr.nextInt();

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

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

System.out.print("*");

}

System.out.println();

}

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

for (int j = arrowHeadWidth; j>i; j--) {

System.out.print("*");

}

System.out.println();

}

}

}

Answer 1

import java.io.*;

class StarAsteriskArrow

{

private int arrow_base_height;

private int arrow_base_width;

private int arrow_head_width;

StarAsteriskArrow ( int baseHeight, int baseWidth, int headWidth)

{

arrow_base_height = baseHeight;

arrow_base_width = baseWidth;

arrow_head_width = headWidth;

System.out.println(" Constructor : inputs are arrow base height = " + arrow_base_height +

" : \n arrow base width = " + arrow_base_width +

" : \n arrow head width = " + arrow_head_width);

}

public int PromptForInteger(String promptMsg) throws IOException

{

Console console = System.console();

String inbuff;

System.out.print(promptMsg);

inbuff = console.readLine();

int iReturn = Integer.parseInt(inbuff);

return(iReturn);

}

public static void main( String args[])

{

int baseHeight=0;

int baseWidth=0;

int headWidth=0;

StarAsteriskArrow dummyInput = new StarAsteriskArrow(0,0,0);

try

{

while (baseHeight <=0)

{

baseHeight = dummyInput.PromptForInteger(" Please input the arrow base height :>");

}

while (baseWidth<=0)

{

baseWidth = dummyInput.PromptForInteger(" Please input the arrow base width :> ");

}

while (headWidth < baseWidth)

{

headWidth = dummyInput.PromptForInteger(" Please input the arrow head width :> ");

}

}

catch( IOException ex) { System.out.println(" INPUT EXCEPTION ERROR "); }

StarAsteriskArrow myArrow = new StarAsteriskArrow( baseHeight, baseWidth, headWidth);

myArrow.Draw();

} //main

public void Draw()

{

int padWidth = (arrow_head_width - arrow_base_width)/2;

int iLoop=0;

int jLoop=0;

//draws the base

for (jLoop=0; jLoop<arrow_base_height; jLoop++)

{

for (iLoop=0; iLoop<padWidth; iLoop++)

{

System.out.print(" ");

}

for (iLoop=0; iLoop<arrow_base_width; iLoop++)

{

System.out.print("*");

}

System.out.println("");

}

//draws the head

for (jLoop=0; jLoop<arrow_head_width; jLoop++)

{

for (iLoop=0; iLoop<jLoop; iLoop++)

{

System.out.print(" ");

}

for (iLoop=0; iLoop<arrow_head_width-2*jLoop; iLoop++)

{

System.out.print("*");

}

System.out.println("");

}

} //Draw

} //class