Question

Write a Gui programming by using JavaFx menus, stage and screen concepts to the RetailItem class,

Write a class named Retailltem that holds data about an item in a retail store. The class should have the following fields description: The description field is a String object that holds a brief description of the item . unitsOnHand: The unitsOnHand field is an int variable that holds the number of units currently in inventory Price: The price field is a double that holds the item's retail price Write appropriate constructor and mutator methods that store values in these fields, and accessor methods that return the values from these fields Next create a file that contains the following data. Each row below should be 1 row in the file. Name this RetailltemDatabase.txt. Description Units On Hand Price Jacket 12 59.95 40 DesignerJeans 34.95 Shirt 24.95 20 Create a method in Retailltem called readData(). This method reads one record/line from the file and initializes its data members (fields) to the values in that line. This method will have 1 input that is a Scanner reference to the file RetailltemDatabase.txt Now create main program. The main program should create 3 Retailltems using an array. Then it should open the file RetailltemDatabase can call readData for all 3 Retailltems. When done don't forget to close the file. Next using your accessor methods print the data in each of the 3 Retailltems.

Answer 1

• Two buttons are created on the scene 1 of primary stage.
• click the first button -"Create three retail items" to create 3 RetailItem objects and perform readData on each of them
• The second button -"Read Retail items" is used to access every data member's value of each RetailItem object.
• The description values of each item are iteratively read and added as 'menu items' of Menu in stage 2's scene.
• Click on each Description Menu item , the corresponding price and Units On Hold values are dispalyed on label of the stage 2.

CODE:

package javafxapp;

import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;
import javafx.application.Application;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.geometry.Pos;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.Menu;
import javafx.scene.control.MenuBar;
import javafx.scene.control.MenuItem;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.text.Font;
import javafx.scene.text.FontWeight;
import javafx.scene.text.Text;
import javafx.stage.Stage;

/**
*
* @author Anjana pc
*/

class RetailItem
{
String description;
int unitsOnHand;
double price;
  
public RetailItem()
{
  
}

public RetailItem(String description, int unitsOnHand, double price) {
this.description = description;
this.unitsOnHand = unitsOnHand;
this.price = price;
}

public String getDescription() {
return description;
}

public void setDescription(String description) {
this.description = description;
}

public int getUnitsOnHand() {
return unitsOnHand;
}

public void setUnitsOnHand(int unitsOnHand) {
this.unitsOnHand = unitsOnHand;
}

public double getPrice() {
return price;
}

public void setPrice(double price) {
this.price = price;
}
  
public void readData(Scanner sc)
{
  
  
String line = sc.nextLine();
System.out.println(line);
String[] arr=line.split(" ");
this.setDescription(arr[0]);
this.setUnitsOnHand(Integer.parseInt(arr[1]));
this.setPrice(Double.parseDouble(arr[2]));

  
  
}
  
}

public class JavaFxApp extends Application {
  
@Override
public void start(Stage primaryStage) {
primaryStage.setTitle("JavaFX Retail Sample App");
  
primaryStage.setHeight(500);
primaryStage.setWidth(500);
RetailItem[] ri=new RetailItem[3];
ri[0]=new RetailItem();
ri[1]=new RetailItem();
ri[2]=new RetailItem();
  
GridPane grid = new GridPane();
grid.setAlignment(Pos.CENTER);
grid.setHgap(10);
grid.setVgap(10);
grid.setPadding(new Insets(25, 25, 25, 25));

Text scenetitle = new Text("Retail");
scenetitle.setFont(Font.font("Tahoma", FontWeight.NORMAL, 20));
grid.add(scenetitle, 0, 0, 2, 1);

Button btn1 = new Button("Create\n 3 Retail Items");
HBox hbBtn = new HBox(10);
hbBtn.setAlignment(Pos.BOTTOM_RIGHT);
hbBtn.getChildren().add(btn1);
grid.add(hbBtn, 0, 1);

Button btn2 = new Button("Read\n Retail Items");
HBox hbBtn2 = new HBox(10);
hbBtn.setAlignment(Pos.BOTTOM_RIGHT);
hbBtn.getChildren().add(btn2);
grid.add(hbBtn2, 1, 1);

final Text actiontarget = new Text();
grid.add(actiontarget, 1, 6);
  

btn1.setOnAction(new EventHandler<ActionEvent>() {

@Override
public void handle(ActionEvent e) {
actiontarget.setFill(Color.FIREBRICK);
actiontarget.setText("Creating 3 Retail Items");
  
try{
  
File f=new File("RetailItemDatabase.txt");
Scanner sc=new Scanner(f);
sc.nextLine();
  
ri[0].readData(sc);
ri[1].readData(sc);
ri[2].readData(sc);
sc.close();
actiontarget.setText("3 Retail Items Created");

}
catch(FileNotFoundException fnfe)
{
fnfe.printStackTrace();
}
  
}
});
  
btn2.setOnAction(new EventHandler<ActionEvent>() {

@Override
public void handle(ActionEvent e) {
actiontarget.setFill(Color.FIREBRICK);
  
String res="";
MenuItem mi[]=new MenuItem[3];
for(int i=0;i<3;i++)
{
res+=ri[i].getDescription()+"\t";
res+=ri[i].getUnitsOnHand()+"\t";
res+=ri[i].getPrice()+"\n";
mi[i] = new MenuItem(i+" "+ri[i].getDescription());
}
actiontarget.setText("3 Retail Items read:\n"+res);




  
// create a menu
Menu m = new Menu("Menu");
  
// create menuitems
  
  
// add menu items to menu
m.getItems().add(mi[0]);
m.getItems().add(mi[1]);
m.getItems().add(mi[2]);
  
// label to display events
Label l = new Label("\t\t\t\t"
+ "no menu item selected");
  
// create events for menu items
// action event
EventHandler<ActionEvent> event = new EventHandler<ActionEvent>() {
public void handle(ActionEvent e)
{
String[] s=((MenuItem)e.getSource()).getText().split(" ");
int index=Integer.parseInt(s[0]);
l.setText("\n\n\n\t\t\t\t Description - " + s[1] +
"\n\t\t\t\tUnits On Hand - "+ ri[index].getUnitsOnHand()+
"\n\t\t\t\tPrice - "+ri[index].getPrice());
}
};
  
// add event
mi[0].setOnAction(event);
mi[1].setOnAction(event);
mi[2].setOnAction(event);
  
// create a menubar
MenuBar mb = new MenuBar();
  
// add menu to menubar
mb.getMenus().add(m);
  
// create a VBox
VBox vb = new VBox(mb, l);
Stage s=new Stage();
s.setHeight(500);
s.setWidth(500);
Scene sc = new Scene(vb, 500, 300);
  
// set the scene
s.setScene(sc);
  
s.show();
  
}
});
  
  
  
  
  
Scene scene = new Scene(grid, 300, 275);
primaryStage.setScene(scene);
primaryStage.show();
}
  
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
launch(args);
}
  
}

OUTPUT:

ALL THE BEST :D