pfaCS 2323 – HW 09 1) (Histogram) Write a program that lets the user enter a text. Clicking the...

Question

pfaCS 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. The  number of occurrences 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  Documentation Manipulate 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

Prashant · Accepted Answer

Histgram_Manupalte_Retrive/Graphs/.classpath
 
	 
	 
	 
Histgram_Manupalte_Retrive/Graphs/.project
 
	 Graphs
	 
	 
	
	 
		 
			 org.eclipse.jdt.core.javabuilder
			 
			
		
	
	 
		 org.eclipse.jdt.core.javanature
	
Histgram_Manupalte_Retrive/Graphs/bin/Histogram.class
public synchronized class Histogram extends javafx.application.Application {
    public void Histogram();
    public static void main(String[]);
    public void start(javafx.stage.Stage) throws Exception;
    private java.util.Map getAlphbetCount(String);
}
Histgram_Manupalte_Retrive/Graphs/bin/ManupalateList$1.class
synchronized class ManupalateList$1 implements javafx.event.EventHandler {
    void ManupalateList$1(ManupalateList, javafx.scene.control.ListView, javafx.collections.ObservableList);
    public void handle(javafx.scene.input.KeyEvent);
}
Histgram_Manupalte_Retrive/Graphs/bin/ManupalateList.class
public synchronized class ManupalateList extends javafx.application.Application {
    public void ManupalateList();
    public static void main(String[]);
    public void start(javafx.stage.Stage) throws Exception;
}
Histgram_Manupalte_Retrive/Graphs/bin/RetreiveFilesFromWeb.class
public synchronized class RetreiveFilesFromWeb extends javafx.application.Application {
    javafx.scene.control.TextArea textArea;
    public void RetreiveFilesFromWeb();
    public static void main(String[]);
    public void start(javafx.stage.Stage) throws Exception;
    private String getContent(String);
}
Histgram_Manupalte_Retrive/Graphs/src/Histogram.java
Histgram_Manupalte_Retrive/Graphs/src/Histogram.java
import java.util.HashMap;
import java.util.Map;
import javafx.application.Application;
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.Button;
import javafx.scene.control.ScrollPane;
import javafx.scene.control.TextArea;
import javafx.scene.layout.AnchorPane;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
public class Histogram extends Application{
    public static void main(String[] args) {
        launch(args);
    }
    @Override
    public void start(Stage primaryStage) throws Exception {
        AnchorPane anchorPane=new AnchorPane();
        TextArea textArea=new TextArea();
        textArea.setMinSize(300, 400);
        ScrollPane scrollPane=new ScrollPane(textArea);
        Button button=new Button("Show Histogram");
        button.setLayoutX(190.0); 
        button.setLayoutY(190.0); 
        button.prefHeight(31.0); 
        button.prefWidth(99.0);
        button.setMinWidth(75);
        button.setOnAction(e ->{
            //getting count for each alphabet
            Map counts=getAlphbetCount(textArea.getText());
            CategoryAxis xAxis=new CategoryAxis();
            xAxis.setLabel("Alphabets");
            NumberAxis yAxis=new NumberAxis();
            yAxis.setLabel("Counts");
            BarChart barChart=new BarChart(xAxis, yAxis);
            XYChart.Series series=new XYChart.Series();
            series.setName("Alphabet Count");
            //creating barchart from A-Z
            for (int i = 65; i  getAlphbetCount(String str){
        str=str.toUpperCase();
        //counting occurances for each Alphabet
        Map counts=new HashMap();
        for (int i = 0; i =65 && (int)str.charAt(i) strings=FXCollections.observableArrayList();
        ListView listView=new ListView(strings);
        listView.setLayoutX(5);
        listView.setLayoutY(65);
        //adding text to list on enter 
        chkAmt.setOnAction(e->{strings.add(chkAmt.getText()); chkAmt.clear(); });
        //deleting entry from list on delete
        listView.setOnKeyPressed(new EventHandler() {
            @Override
            public void handle(KeyEvent event) {
                if(event.getCode().equals(KeyCode.DELETE)){
                    listView.getSelectionModel().getSelectedIndex();

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....

Answer To: CS 2323 – HW 09 1) (Histogram) Write a program that lets the user enter a text. Clicking the Show...

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