Question

JavaFX

Write a program that displays a histogram to show the number occurrences of each number in an input sequence. There should be a text filed to accept users input numbers and button to show the histogram. Enter your student number (9 digit number) to generate your unique histogram. A student with ID 100013456 will give a histogram like the following one (note the text filed and button are not shown in the following histogram, BUT is required for the application)

Edit: use student ID 100473587

Occurrence Histogram 3.5 الفة 2.5 2 1.5 1 1 0.5 0 1 2 3 3 4 5 6 7 8 9

Answer 1

import javafx.application.Application;
import javafx.collections.ObservableList;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Insets;
import javafx.scene.Group;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.layout.HBox;
import javafx.scene.layout.StackPane;
import javafx.scene.layout.VBox;
import javafx.scene.paint.Color;
import javafx.scene.shape.Line;
import javafx.scene.shape.Rectangle;
import javafx.scene.text.Font;
import javafx.stage.Stage;

/**
*
* @author BB2
*/
public class Hitogram extends Application {
  
@Override
public void start(Stage primaryStage) {
  
  
  
VBox vbox=new VBox();
vbox.setSpacing(10);
  
  
  
TextField tf=new TextField();
tf.setMinWidth(280);
  
  
Button btn = new Button();
btn.setText("Get Histogram");
btn.setOnAction(new EventHandler<ActionEvent>() {
  
@Override
public void handle(ActionEvent event) {
String seq=tf.getText();
long val=Long.parseLong(seq);
  
int [] digits=new int[10];
for(int i=0;i<10;i++){
digits[i]=0;
}
while(val>0){
int i=(int) (val%10);
digits[i]++;
val=val/10;
}
int max=digits[0];
for(int i=1;i<10;i++){
if(digits[i]>max){
max=digits[i];
}
}

vbox.getChildren().clear();
  
int n=2*max+1;
Rectangle[] r=new Rectangle[10];

Line v=new Line();
Line h=new Line();

v.setStartX(5);
v.setStartY(5);
v.setEndX(5);
v.setEndY(250);
v.setStroke(Color.SILVER);

h.setStartX(5);
h.setStartY(250);
h.setEndX(370);
h.setEndY(250);
h.setStroke(Color.SILVER);

Group gp=new Group();
gp.getChildren().add(v);
gp.getChildren().add(h);


Line [] lines=new Line[n];

int ed=240/n;
int ehl=35;

for(int i=0;i<n;i++){
lines[i]=new Line();
lines[i].setStartX(5);
lines[i].setStartY(250-ed*(i+1));
lines[i].setEndX(370);
lines[i].setEndY(250-ed*(i+1));
  
lines[i].setStroke(Color.SILVER);
gp.getChildren().add(lines[i]);
}

for(int i=0;i<10;i++){
r[i]=new Rectangle();
r[i].setHeight(2*digits[i]*ed);
r[i].setWidth(ehl);
r[i].setX(5+((ehl*(i))));
r[i].setY(250-2*digits[i]*ed-1);
r[i].setFill(Color.BLUE);
gp.getChildren().add(r[i]);
}



Label l0=new Label("0");
Label l1=new Label("1");
Label l2=new Label("2");
Label l3=new Label("3");
Label l4=new Label("4");
Label l5=new Label("5");
Label l6=new Label("6");
Label l7=new Label("7");
Label l8=new Label("8");
Label l9=new Label("9");

Label [] lbls=new Label[n];

Label title=new Label("Occurrence Histogram");
title.setFont(new Font(25));
title.setTextFill(Color.SILVER);
title.setPadding(new Insets(0, 70, 0, 100));

HBox below=new HBox();

below.setMargin(l0, new Insets(8, 14, 8, 14));
below.setMargin(l1, new Insets(8, 14, 8, 14));
below.setMargin(l2, new Insets(8, 14, 8, 14));
below.setMargin(l3, new Insets(8, 14, 8, 14));
below.setMargin(l4, new Insets(8, 14, 8, 14));
below.setMargin(l5, new Insets(8, 14, 8, 14));
below.setMargin(l6, new Insets(8, 14, 8, 14));
below.setMargin(l7, new Insets(8, 14, 8, 14));
below.setMargin(l8, new Insets(8, 14, 8, 14));
below.setMargin(l9, new Insets(8, 14, 8, 14));
  
ObservableList list = below.getChildren();
  
list.addAll(l0,l1,l2,l3,l4 ,l5,l6,l7,l8,l9);   

Label [] lblv=new Label[n+1];
VBox left=new VBox();

for(int i=0;i<=n;i++){
String str=""+(.5*i);
lblv[i]=new Label(str);
}

left.setMargin(lblv[n], new Insets(240-n*ed, 8,0, 8));

for(int i=n-1;i>=0;i--){
left.setMargin(lblv[i], new Insets((ed)/2, 8, 0, 8));

}

ObservableList list1 = left.getChildren();
  
for(int i=n;i>=0;i--){
list1.add(lblv[i]);
}


VBox vb=new VBox();
vb.getChildren().add(gp);
vb.getChildren().add(below);


HBox mdl=new HBox();
mdl.getChildren().add(left);
mdl.getChildren().add(vb);


vbox.getChildren().add(title);
vbox.getChildren().add(mdl);
//vbox.getChildren().add(below);
  
}
});
  
HBox hbox=new HBox();
hbox.setSpacing(15);
  
  
hbox.getChildren().add(tf);
hbox.getChildren().add(btn);
  
StackPane root = new StackPane();
root.getChildren().add(hbox);
  
  
  
VBox grp=new VBox();
  
grp.getChildren().add(root);
grp.getChildren().add(vbox);
  
Scene scene = new Scene(grp, 450, 350);
  
primaryStage.setTitle("HISOGRAM");
primaryStage.setScene(scene);
primaryStage.show();
}

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

HISOGRAM 100013456 Get Histogram Occurrence Histogram 3.5 3.0 2.5 2.0 1.5 1.0 0.5 0.0 0 1 2 3 4 5 6 7 8 1 9