CS 2323 – HW 091) (Histogram) Write a program that lets the user enter a text. Clicking the Show...

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CS 2323 – HW 091) (Histogram) Write a program that lets the user enter a text.  Clicking the Show Histogram utton displays the occuences of the letters in the text in a histogram, as shown below. The number of occuences of each letter is displayed in a bar chart.  Use a separate stage to displayte histogram.    2) (Manipulate list) Write a program that displays a list view and a text field. The user can add a string to the list view by entering a string in the text field, as shown. The user can also delete a string from the list view by selecting a string and pressing the Delete button, as shown here    3) (Retrieve files from Web) Write a Java program that retrieves a file from a Web server, as shown in Figure 16.7. The user interface includes a text field in which to enter the URL of the file name, a text area in which to show the file, and a button that can be used to submit an action. A label is added at the bottom of the pane to indicate the status, such as File loaded successfully or Network connection problem.Grading Criteria Histogram 1 Display JavaFX window 1 Display Editable Texbook 1 Calculate letter frequency 1.4  Button displays Histogram 1.2  DocumentationManipulate list 1 Display  JavaFX window 1.5  Add String 1.5  Delete String 1.2 Documentation Retrieve File 1 Display JavaFX window 1 Read URL address 1 Read file from URL 1 Display Contents of File 1.2 Documentation

Taha Kasim · Accepted Answer

OrderNo.85381/85381_documentation.docx
                                                              Javafx Assignment
Q1) Histogram
HistogramMainApp   It is a main class to initiate GUI stage.
CountAlphabet  It is an abstract class in which alphabet frequency gets calculated.
CountAlphabetImp  it is an interface.
AlphaCountController  It is a controller class which extend abstract class and create new stage to display bar.
Q2) List View
It will add item to list and delete selected item from the list.
ItemListViewMainApp  it is main class which initiate stage.
ItemListViewController  it is a controller class which will add item or delete selected item.
Q3) Retrieve File
It is GUI which will retrieve file from URL and display on text area.
RetrieveFileMainApp  it is initiating the stage of the application.
RetrieveFileController  it is initializing the application and displaying the content in text area.
RetrieveFile  it is an abstract class to read file content from entered url. 
OrderNo.85381/JavaGUIHistogram/pom.xml
 
	 4.0.0
	 com.assignment.javafx.histogram
	 assignment-javafx-histogram
	 0.0.1-SNAPSHOT
	 assignment-javafx-histogram
	 assignment-javafx-histogram
	 
		 UTF-8
		 com.assignment.javafx.HistogramMainApp
		 1.8
	
	 
		
		 
			 org.openjfx
			 javafx-fxml
			 11
		
	
	 
		 
			 
				 org.apache.maven.plugins
				 maven-compiler-plugin
				 3.6.1
				 
					 1.8
					 1.8
				
			
		
	
OrderNo.85381/JavaGUIHistogram/src/main/java/com/assignment/javafx/alphafeq/CountAlphabet.java
OrderNo.85381/JavaGUIHistogram/src/main/java/com/assignment/javafx/alphafeq/CountAlphabet.java
package com.assignment.javafx.alphafeq;
import java.util.HashMap;
//it is a class to find frequency of letter in the sentence
public abstract class CountAlphabet implements CountAlphabetImp {
    @Override
    public HashMap countAlphabet(String sentence) {
        
        HashMap alphaMap = new HashMap();
        
        for(Character alphaInSentence : sentence.toUpperCase().toCharArray()) {
            if(alphaMap.containsKey(alphaInSentence)) {
                alphaMap.replace(alphaInSentence, alphaMap.get(alphaInSentence).intValue()+1);
            }else {
                alphaMap.put(alphaInSentence, 1);
            }
        }
        return alphaMap;
    }
}
OrderNo.85381/JavaGUIHistogram/src/main/java/com/assignment/javafx/alphafeq/CountAlphabetImp.java
OrderNo.85381/JavaGUIHistogram/src/main/java/com/assignment/javafx/alphafeq/CountAlphabetImp.java
package com.assignment.javafx.alphafeq;
import java.util.HashMap;
//An interface of letter frequency
interface CountAlphabetImp {
    public HashMap countAlphabet(String sentence);
}
OrderNo.85381/JavaGUIHistogram/src/main/java/com/assignment/javafx/controller/AlphaCountController.java
OrderNo.85381/JavaGUIHistogram/src/main/java/com/assignment/javafx/controller/AlphaCountController.java
package com.assignment.javafx.controller;
import java.util.Arrays;
import java.util.HashMap;
import com.assignment.javafx.alphafeq.CountAlphabet;
import javafx.collections.FXCollections;
import javafx.event.ActionEvent;
import javafx.fxml.FXML;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.chart.BarChart;
import javafx.scene.chart.CategoryAxis;
import javafx.scene.chart.NumberAxis;
import javafx.scene.chart.XYChart;
import javafx.scene.control.Alert;
import javafx.scene.control.Button;
import javafx.scene.control.TextArea;
import javafx.stage.Stage;
import javafx.stage.Window;
public class AlphaCountController extends CountAlphabet {
    
    
    @FXML
    private TextArea sentenceField;
    @FXML
    private Button submitButton;
    @FXML
    public void showhistogram(ActionEvent event) {
        Window owner = submitButton.getScene().getWindow();
        System.out.println("User Entered Sentence = ".concat(sentenceField.getText()));
        if (sentenceField.getText().isEmpty()) {
            showAlert(Alert.AlertType.ERROR, owner, "Form Error!", "Please enter sentence!");
            return;
        }
        String sentence = sentenceField.getText();
        AlphaCountController alphaCountObj = new AlphaCountController();
        HashMap alphaCountMap = alphaCountObj.countAlphabet(sentence);
        System.out.println("Total Alphabet Count :"+alphaCountMap);
        displayBarChart(alphaCountMap);
    }
    //It is static method which will display bar chart
    @SuppressWarnings("unchecked")
    public static void displayBarChart(HashMap alphaCountMap) {
        // creation of x axis
        CategoryAxis xAxis = new CategoryAxis();
        xAxis.setCategories(FXCollections.observableArrayList(Arrays.asList("A", "B", "C", "D", "E", "F", "G",
                "H", "I", "J", "K", "L", "M", "N", "O", "P", "Q", "R", "S", "T", "U", "V", "W", "X", "Y", "Z")));
        xAxis.setLabel("Alphabets Frequency Graph");
        // creation of y axis
        NumberAxis yAxis = new NumberAxis();
        BarChart barChart = new BarChart(xAxis, yAxis);
        //It is creating XY chart and draw all letter on x axis of the chart
        XYChart.Series series = new XYChart.Series();
        series.getData().add(
                new XYChart.Data("A", (alphaCountMap.get('A') != null) ? alphaCountMap.get('A') : 0));
        series.getData().add(new XYChart.Data("B", (alphaCountMap.get('B') != null) ? alphaCountMap.get('B') : 0));
        series.getData().add(new XYChart.Data("C", (alphaCountMap.get('C') != null) ? alphaCountMap.get('C') : 0));
        series.getData().add(new XYChart.Data("D", (alphaCountMap.get('D') != null) ? alphaCountMap.get('D') : 0));
        series.getData().add(new XYChart.Data("E", (alphaCountMap.get('E') != null) ? alphaCountMap.get('E') : 0));
        series.getData().add(new XYChart.Data("F", (alphaCountMap.get('F') != null) ? alphaCountMap.

CS 2323 – HW 09 1) (Histogram) Write a program that lets the user enter a text. Clicking the Show Histogram button displays the occurrences of the letters in the text in a histogram, as shown below....

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