Question

Write a WidgetView GUI that has the following widgets:

a button labeled "go up/down"

a label initialized to 0 (we'll call this the left label)

a label initialized to 0 (we'll call this the right label)

a button labeled "go down/up"

a label initialized to “Last Random #s: “ (we’ll call this the numbers label)

When the "go up/down" button is pushed, a random number between 1 and 10 (inclusive) is generated and added to the left label, and another random number between 1 and 10 (inclusive) is generated and subtracted from the right label. The two random numbers are displayed in the numbers label.

When the "go down/up" button is pushed, a random number between 1 and 10 (inclusive) is generated and subtracted from the left label, and another random number between 1 and 10 (inclusive) is generated and added to the right label. The two random numbers are displayed in the numbers label.

The picture below is the output.

3:51 PM ooooo T-Mobile LTE 74% dist-edwaketech.edu Unit 13 Lab Grade Sheet Key For full credit, the program must be implemented as per instru instructions may result in partial to full loss of points. Item Up Down (30 pts) Output Run your application and make screenshots at the points indicated below. Your results may vary because of the random numbers. Initial s go downtup Last random Rs: After clicking left button go updown 6 go downup Last random es: 6,6 After clicking eft button go up down 8-10 go down up Last random Rs 2.4 After clicking right button go updown 14-15 go down up Last random s: 5,6 After clicking right button go up down 20-18 go down up Last random s: 3,6

Answer 1

package HomeworkLib.swingandfx;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Random;

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.Alert;
import javafx.scene.control.Alert.AlertType;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextArea;
import javafx.scene.control.TextField;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.VBox;
import javafx.scene.text.Font;
import javafx.scene.text.FontWeight;
import javafx.scene.text.Text;
import javafx.stage.Stage;

public class LeftAnfRightRandomNumber extends Application {

   GridPane grid = null;
   Text scenetitle = null;

   Label leftLabel = null;
   Label rightLabel = null;
   Label lastRamdonNumLabel = null;
   Button goUpAndDownBtn = null;
   Button goDownAndUpBtn = null;
   HBox leftAndRightHBox = null;

   Stage primaryStage = null;

   @Override
   public void start(Stage primaryStage) {

       this.primaryStage = primaryStage;
       grid = new GridPane();

       grid.setAlignment(Pos.CENTER);
       grid.setHgap(5);
       grid.setVgap(5);
       grid.setPadding(new Insets(20, 5, 20, 5));
       grid.setStyle("-fx-background-color: cyan; -fx-grid-lines-visible: false");

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

       leftAndRightHBox = new HBox(6);
       goUpAndDownBtn = new Button("go up/down");
       leftAndRightHBox.getChildren().add(goUpAndDownBtn);
       leftLabel = new Label("0");
       leftAndRightHBox.getChildren().add(leftLabel);
       rightLabel = new Label("0");
       leftAndRightHBox.getChildren().add(rightLabel);
       goDownAndUpBtn = new Button("go Down/up");
       leftAndRightHBox.getChildren().add(goDownAndUpBtn);
       lastRamdonNumLabel = new Label("Last Random $s:");
       leftAndRightHBox.setAlignment(Pos.TOP_LEFT);
       leftAndRightHBox.getChildren().add(lastRamdonNumLabel);
       grid.add(leftAndRightHBox, 0, 1, 1, 1);
       leftAndRightHBox.setDisable(false);

       goUpAndDownBtn.setOnAction(new EventHandler<ActionEvent>() {
           @Override
           public void handle(ActionEvent e) {
               handleGoUpAndDownButtonAction(e);
           }
       });

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

           @Override
           public void handle(ActionEvent e) {
               handleGoDownAndUpBtnButtonAction(e);
           }
       });

       Scene scene = new Scene(grid, 575, 425);
       primaryStage.setTitle("File System");
       primaryStage.setScene(scene);
       primaryStage.show();
   }

   public void handleGoUpAndDownButtonAction(ActionEvent event) {
       Random rand = new Random();
       int leftNum = rand.nextInt(10);
       int rightNum = rand.nextInt(10);

       int leftLabelNum = Integer.parseInt(leftLabel.getText());
       int rightLabelNum = Integer.parseInt(rightLabel.getText());

       leftLabel.setText("" + (leftLabelNum + leftNum));
       rightLabel.setText("" + (rightLabelNum - rightNum));
       lastRamdonNumLabel
               .setText("Last Random $s:" + leftNum + "," + rightNum);
   }

   public void handleGoDownAndUpBtnButtonAction(ActionEvent event) {
       Random rand = new Random();
       int leftNum = rand.nextInt(10);
       int rightNum = rand.nextInt(10);

       int leftLabelNum = Integer.parseInt(leftLabel.getText());
       int rightLabelNum = Integer.parseInt(rightLabel.getText());

       leftLabel.setText("" + (leftLabelNum - leftNum));
       rightLabel.setText("" + (rightLabelNum + rightNum));
       lastRamdonNumLabel
               .setText("Last Random $s:" + leftNum + "," + rightNum);
   }

   /**
   * @param args
   * the command line arguments
   */
   public static void main(String[] args) {
       launch(args);
   }
}

Output :

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