Does the below program use recursion to create a sierpinski triangle? Souce code: package application;   public class Triangle { publicstaticvoid main(String [] args) { TriangleFrame tf = new TriangleFrame(); } } package application; import java.awt.*; import javax.swing.*; public class SierpinskiGasket extends JPanel {     public SierpinskiGasket() {              }     public void drawTriangle (Graphics g, int x, int y, int width, int height) {         if (height == 1) {             g.drawRect(x, y, width, height);             }         else {             drawTriangle(g, x + (width / 4), y, width / 2, height / 2);             drawTriangle(g, x, y + (height / 2), width / 2, height / 2);             drawTriangle(g, x + (width / 2), y + (height / 2), width/ 2, height / 2);         }     }     public void paintComponent (Graphics g) {         super.paintComponent(g);         drawTriangle(g, 0, 0, this.getWidth(), this.getHeight());     } }

import java.util.Scanner; public class TriangleArea {   public static void main(String[] args) {      Scanner scnr = new Scanner(System.in);            Triangle triangle1 = new Triangle();      Triangle triangle2 = new Triangle();       // TODO: Read and set base and height for triangle1 (use setBase() and setHeight())            // TODO: Read and set base and height for triangle2 (use setBase() and setHeight())                  System.out.println("Triangle with smaller area:");            // TODO: Determine smaller triangle (use getArea())      //       and output smaller triangle's info (use printInfo())         }} public class Triangle {   private double base;   private double height;      public void setBase(double userBase){      base = userBase;   }   public void setHeight(double userHeight) {      height = userHeight;   }      public double getArea() {      double area = 0.5 * base * height;      return area;   }      public void printInfo() {      System.out.printf("Base:…

import java.util.Scanner; public class CharMatch {   public static void main(String[] args) {      Scanner scnr = new Scanner(System.in);      String userString;        char charToFind;        int strIndex;       userString = scnr.nextLine();        charToFind = scnr.next().charAt(0);        strIndex = scnr.nextInt();            /* Your code goes here */     }}

Fix the code below so that there is a function that calculate the height of the triangle.   package recursion; import javax.swing.*;import java.awt.*; /** * Draw a Sierpinski Triangle of a given order on a JPanel. *  *  */public class SierpinskiPanel extends JPanel {     private static final int WIDTH = 810;    private static final int HEIGHT = 830;        private int order;     /**     * Construct a new SierpinskiPanel.     */    public SierpinskiPanel(int order) {                this.order = order;                this.setMinimumSize(new Dimension(WIDTH, HEIGHT));        this.setMaximumSize(new Dimension(WIDTH, HEIGHT));        this.setPreferredSize(new Dimension(WIDTH, HEIGHT));    }        public static double height(double size) {        double h = (size * Math.sqrt(3)) / 2.0;        return h;    }    /**     * Draw an inverted triangle at the specified location on this JPanel.     *      * @param x the x coordinate of the upper left corner of the triangle     * @param y the y…

Please help fast

import java.util.Scanner; public class Inventory {   public static void main (String[] args) {      Scanner scnr = new Scanner(System.in);             InventoryNode headNode;                                                    InventoryNode currNode;      InventoryNode lastNode;       String item;      int numberOfItems;      int i;       // Front of nodes list                                                                               headNode = new InventoryNode();      lastNode = headNode;       int input = scnr.nextInt();       for(i = 0; i < input; i++ ) {         item = scnr.next();         numberOfItems = scnr.nextInt();         currNode = new InventoryNode(item, numberOfItems);         currNode.insertAtFront(headNode, currNode);         lastNode = currNode;      }       // Print linked list                                                                         currNode = headNode.getNext();      while (currNode != null) {         currNode.printNodeData();         currNode…

I have this code: import java.util.Scanner; public class CalcTax {     public static void main(String[] args) {        Scanner sc = new Scanner(System.in);         // Welcome message        System.out.println("Welcome to my tax calculation program.");         // Declare the variables        int i, pinCode, maxRetries = 3;        String choice;         // Get the PIN code        for (i = 0; i < maxRetries; i++) {            System.out.print("Please enter the PIN code: ");            pinCode = sc.nextInt();            if (pinCode == 5678) {                break;            }            System.out.println("Invalid pin code. Please try again.");        }        if (i == maxRetries) {            System.out.println("Invalid pin code. You have reached the maximum number of retries.");            System.exit(0);        }         // Get the income, interest, deduction, and paid tax amount        double income, interest, deduction, paidTax;        do {            System.out.print("Please…

import javax.swing.JOptionPane; public class Addition{public static void main( String args[] ){for (int i = 0; i < 10; i++) {String Number = JOptionPane.showInputDialog( "Enter a number" );int number = Integer.parseInt( Number );int sum = number;JOptionPane.showMessageDialog( null, "The sum is " + sum,"Sum of 10 numbers", JOptionPane.PLAIN_MESSAGE );}}} I want to add the number that was entered but I don't know how to do that. Do you know how to add the entered number?

import java.awt.*; public class TestRectangle {public static void main(String[] args) {Rectangle r1 = new Rectangle(5, 4, 10, 17);Rectangle r2 = new Rectangle(10, 10, 20, 3);Rectangle r3 = new Rectangle(0, 1, 12, 15);Rectangle r4 = new Rectangle(10, 10, 20, 3);System.out.println("r1 = " + r1);System.out.println("r2 = " + r2);System.out.println("r3 = " + r3);System.out.println("r2 equals r1? " + r2.equals(r1));System.out.println("r2 equals r2? " + r2.equals(r2));System.out.println("r2 equals r3? " + r2.equals(r3));System.out.println("r2 equals r4? " + r2.equals(r4)); System.out.println("r1 contains (6, 8)? = " + r1.contains(6, 8));System.out.println("r2 contains (6, 8)? = " + r2.contains(6, 8));System.out.println("r3 contains (6, 8)? = " + r3.contains(6, 8));System.out.println("r2 contains (30, 13)? = " + r2.contains(30, 13)); r1.intersect(r3);r2.intersect(r4);System.out.println("r1 intersect r3 = " + r1);System.out.println("r2 intersect r4 = " + r2);…