Java code is compiling but isn\'t showing any output. Suppose to be showing an i

ID: 3830102 • Letter: J

Question

Java code is compiling but isn't showing any output. Suppose to be showing an interface using JavaFX.

Code:

package project_7_main;

import java.io.*;
import java.util.*;
import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.control.Alert;
import javafx.scene.layout.BorderPane;
import javafx.stage.WindowEvent;
import static project_7_main.VisualInterface.editItem;
import static project_7_main.VisualInterface.results;

class Entry {
public String name, quantity, note;
}
public class Project_7_main extends Application {
public static Entry[] entryList = new Entry[200];
public static int num_entries = 0;
public static Scanner stdin = new Scanner(System.in);
public static BorderPane pane = new BorderPane();
public static boolean debug = true;
public static File file = new File ("inventory.txt");

@Override
public void start(Stage primaryStage) {
Scene scene = new Scene(pane, 800, 600);
primaryStage.setTitle("Inventory Managment");
pane.setStyle("-fx-background-color: #85CD66;"
+ "-fx-border-width: 5;"
+ "-fx-insets: 10;"
+ "-fx-border-radius: 5;"
+ "-fx-border-color: green;");
//Place nodes here
pane.setLeft(VisualInterface.getVBox());
//Create a scene and place it in stage
primaryStage.setScene(scene); //placing scene in stage
primaryStage.show();

primaryStage.setOnCloseRequest((WindowEvent w) -> {
try {
CopyInventoryToFile("inventory.txt");
}
catch (Exception e){
Alert alert = new Alert(Alert.AlertType.ERROR);
alert.setTitle("Error");
alert.setContentText("There was a problem saving your changes!");
}
});
}
public static void main(String args[]) throws Exception {
readInventory("inventory.txt");
launch(args);
}
public static void readInventory(String FileName) throws Exception {
try {
Scanner input = new Scanner(System.in);
File file = new File (input.nextLine());
input = new Scanner (file);
while(input.hasNextLine()) {
String line = input.nextLine();
System.out.println(line);
}
input.close();
}
catch(Exception ex) {
ex.printStackTrace();

}
}
public static void enterName(String item) {
String itemName = "Item";
itemName = item;
}
public static void enterQuantity(String number) {
String quantity = "Quantity";
quantity = number;
}
public static void enterNotes(String notes) {
String itemNotes = "Notes";
itemNotes = notes;
}
public static int index(String Key) {
// Function to get the index of a key from an array
// if not found, returns -1
for (int i = 0; i < num_entries; i++) {
if (entryList[i].name.equalsIgnoreCase(Key)) {
return i; // Found the Key, return index.
}
}
return -1;
}
public static void displayEntry(Entry item) {
System.out.println("--" + item.name + " "
+ "--" + item.quantity + " "
+ "--" + item.note);
}
public static void listAllItems() {
int i = 0;
while (i < num_entries) {
displayEntry(entryList[i]);
i++;
}
}
public static void find(String search) {
for (int i = 0, found = 0; i < num_entries; i++){
if(search.toLowerCase().contains(entryList[i].name) || entryList[i].name.toLowerCase().contains(search)) {
results.add(entryList[i].name);
found++;
}
}
}
public static void delete(String name){
for(int i = 0; i < num_entries; i++) {
if(entryList[i].name.equals(editItem)) {
for(int j = i; j < num_entries; j++){
entryList[j] = entryList[j + 1];
}
num_entries--;
results.remove(editItem);
}

}
}
public static void sortList() {
int i;
Entry temp;
temp = new Entry();
for (int j = 0; j < num_entries; j++) {
for (i = j + 1; i < num_entries; i++) {
if (entryList[j].name.compareToIgnoreCase(entryList[i].name) > 0) {
//Swap the entries if their names are not in ascending order
temp = entryList[j];
entryList[j] = entryList[i];
entryList[i] = temp;
}
}
}
System.out.println("Sorted the list. Press l to list all the items");
}
public static void CopyInventoryToFile(String FileName) throws Exception {
FileOutputStream out = new FileOutputStream(FileName);
PrintStream P = new PrintStream(out);
for (int i = 0; i < num_entries; i++) {
P.println(entryList[i].name + " " + entryList[i].quantity
+ " " + entryList[i].note);
}
}
public static boolean isInteger(String quantity) {
Boolean digit = true;
int yourNumber;
for (int i = 0; i < num_entries; i++) {
try {
yourNumber = Integer.parseInt(quantity);
} catch (NumberFormatException ex) {
Alert alert = new Alert(Alert.AlertType.ERROR);
alert.setTitle("Error");
alert.setContentText("Invalid input. Quantity must be an integer. Quantity set to 0 by default.");
digit = false;
}
}
if (debug) {
System.out.println(digit);
}
return digit;
}
}

package project_7_main;

import javafx.geometry.Insets;
import javafx.application.Application;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.fxml.FXML;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.stage.Stage;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.VBox;
import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.geometry.Pos;
import javafx.scene.control.Alert;
import javafx.scene.control.ButtonBar.ButtonData;
import javafx.scene.control.ButtonType;
import javafx.scene.control.Dialog;
import javafx.scene.control.ListView;
import javafx.scene.control.TextArea;
import javafx.scene.control.TextField;
import javafx.scene.control.TextInputDialog;
import javafx.scene.effect.DropShadow;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.input.KeyEvent;
import javafx.scene.input.MouseEvent;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.HBox;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.text.Font;
import javafx.util.Pair;
import static project_7_main.Project_7_main.CopyInventoryToFile;
import static project_7_main.Project_7_main.debug;
import static project_7_main.Project_7_main.entryList;
import static project_7_main.Project_7_main.find;
import static project_7_main.Project_7_main.num_entries;
import static project_7_main.Project_7_main.pane;

public class VisualInterface {
public static ObservableList<String> results = FXCollections.observableArrayList();
public static Label findName = new Label();
public static String editItem;

public static VBox getVBox() {
VBox leftColumn = new VBox(15);
leftColumn.setStyle("-fx-background-image: url('http://images.freeimages.com/images/premium/previews/1932/19323130-fruits-and-vegetables-background.jpg');"
+ "-fx-border-width: 5;"
+ "-fx-insets: 10;"
+ "-fx-border-radius: 5;"
+ "-fx-border-color: white;");
Label optionLabel = new Label("Options");
DropShadow shadow = new DropShadow();
shadow.setOffsetX(5.0);
shadow.setOffsetY(5.0);
leftColumn.setPrefSize(200, 600);
leftColumn.setSpacing(40);
leftColumn.setPadding(new Insets(15, 5, 5, 5));
optionLabel.setMinWidth(100);
optionLabel.setFont(new Font("Rockwell Extra Bold", 35));
optionLabel.setTextFill(Color.WHITE);
optionLabel.setEffect(shadow);
leftColumn.getChildren().add(optionLabel);
Button btE = new Button("Enter");
Button btF = new Button("Find");
Button btD = new Button("Delete");
Button btL = new Button("List All");
Button btQ = new Button("Save");
Button[] options = {btE, btF, btD, btL, btQ};
for (int i = 0; i < options.length; i++) {
VBox.setMargin(options[i], new Insets(0, 0, 0, 15));
leftColumn.getChildren().add(options[i]);
options[i].setStyle("-fx-font: 30 Rockwell");
options[i].setMinWidth(150);
}
//------Handlers for 1st Enter Buttons----------------------//
btE.setOnAction((ActionEvent e) -> {
if (debug) {
System.out.println("clicked");
}
VBox enterBox = enterPane();
pane.getChildren().clear();
pane.getChildren().addAll(leftColumn, enterBox);
//Project_7_Main.addItem();
});
btF.setOnAction((ActionEvent e) -> {
if (debug) {
System.out.println();
}
VBox findBox = findPane();
pane.getChildren().clear();
pane.getChildren().addAll(leftColumn, findBox);
});
btD.setOnAction((ActionEvent e) -> {
if (debug) {
System.out.println("clicked");
}
VBox deleteBox = deletePane();
pane.getChildren().clear();
pane.getChildren().addAll(leftColumn, deleteBox);
});
btL.setOnAction((ActionEvent e) -> {
if (debug) {
System.out.println("clicked");
}
VBox listBox = listPane();
pane.getChildren().clear();
pane.getChildren().addAll(leftColumn, listBox);
});
btQ.setOnAction((ActionEvent e) -> {
if (debug) {
System.out.println("clicked");
}
VBox saveBox = savePane();
pane.getChildren().clear();
pane.getChildren().addAll(leftColumn, saveBox);
});
return leftColumn;
}
public static VBox enterPane() {
// Create the custom dialog.
Dialog<Pair<String, String>> dialog = new Dialog<>();
dialog.setTitle("Enter an item");
// Set the picture (must be included in the project).
//ImageView imageView = new ImageView(new Image("login.png"));
// Set the button types.
Button btnEnter = new Button("Enter");
btnEnter.setMinSize(60, 40);
Button btnCancel = new Button("Cancel");
btnCancel.setMinSize(60, 40);
VBox vBoxE = new VBox(15);
vBoxE.setPadding(new Insets(15, 15, 15, 15));
vBoxE.setPrefSize(500, 350);
vBoxE.setStyle("-fx-background-color: red;"
+ "-fx-border-width: 5;"
+ "-fx-insets: 10;"
+ "-fx-border-radius: 5;"
+ "-fx-border-color: gold;");
Label paneLabel = new Label("Enter an item");
paneLabel.setMinWidth(300);
paneLabel.setFont(new Font("Rockwell Extra Bold", 25));
HBox label = getHBox();
label.getChildren().add(paneLabel);
TextField name = new TextField();
name.setMinWidth(400);
Label nameLabel = new Label("Item: ");
nameLabel.setMinWidth(100);
nameLabel.setFont(new Font("Rockwell", 20));
HBox enterItem = getHBox();
enterItem.getChildren().addAll(nameLabel, name);
TextField quantity = new TextField();
quantity.setMinWidth(400);
Label numLabel = new Label("Quantity: ");
numLabel.setMinWidth(100);
numLabel.setFont(new Font("Rockwell", 20));
HBox enterNum = getHBox();
enterNum.getChildren().addAll(numLabel, quantity);
TextArea notes = new TextArea();
notes.setMinWidth(400);
notes.setWrapText(true);
notes.setMinHeight(250);
Label notesLabel = new Label("Notes: ");
notesLabel.setMinWidth(100);
notesLabel.setFont(new Font("Rockwell", 20));
HBox enterNotes = getHBox();
enterNotes.getChildren().addAll(notesLabel, notes);
HBox buttons = getHBox();
buttons.setTranslateX(350);
buttons.getChildren().addAll(btnEnter, btnCancel);
vBoxE.getChildren().addAll(label, enterItem, enterNum, enterNotes, buttons);
vBoxE.setTranslateX(200);
btnEnter.setOnAction((ActionEvent e) -> {
if (debug) {
System.out.println("clicked");
}
Entry[] entryList = null;
entryList[num_entries] = new Entry();
entryList[num_entries].name = name.getText();
entryList[num_entries].quantity = quantity.getText();
entryList[num_entries].note = notes.getText();
if (debug) {
System.out.println(entryList[num_entries].name + entryList[num_entries].quantity + entryList[num_entries].note);
}
num_entries++;


enterPane().getChildren().clear();
pane.getChildren().add(enterPane());
});
btnCancel.setOnAction((ActionEvent e) -> {
if (debug) {
System.out.println("clicked");
}
pane.getChildren().remove(vBoxE);
});
return vBoxE;
}
public static VBox findPane() {
VBox vBoxF = new VBox(15);
vBoxF.setPadding(new Insets(15, 15, 15, 15));
vBoxF.setPrefSize(500, 350);
Button btnEdit = new Button("Edit");
btnEdit.setMinSize(60, 40);
Button btnCancel = new Button("Cancel");
btnCancel.setMinSize(60, 40);
Label paneLabel = new Label("Enter an item");
paneLabel.setMinWidth(300);
paneLabel.setFont(new Font("Rockwell Extra Bold", 30));
HBox label = getHBox();
label.getChildren().add(paneLabel);
TextField findItem = new TextField();
findItem.setMinWidth(300);
Label nameLabel = new Label("Item: ");
nameLabel.setMinWidth(75);
nameLabel.setFont(new Font("Rockwell", 20));
HBox enterItem = getHBox();
enterItem.getChildren().addAll(nameLabel, findItem);
HBox buttons = getHBox();
buttons.setTranslateX(350);
buttons.getChildren().addAll(btnEdit, btnCancel);
ListView findResults = new ListView();
findResults.setMinWidth(395);
findResults.setTranslateX(15);
findResults.setMinHeight(300);

results.clear();
findResults.setItems(results);
vBoxF.getChildren().addAll(label, enterItem, findResults, buttons);
vBoxF.setTranslateX(200);
if(debug) findResults.setItems(results);

findItem.setOnKeyReleased((KeyEvent event) -> {
results.clear();
Project_7_main.find(findItem.getText());
if (debug) {
System.out.println(results);
}
findResults.setItems(results);
});
findResults.setOnMouseClicked((MouseEvent m) -> {
editItem = findResults.getSelectionModel().getSelectedItem().toString();
});
btnEdit.setOnAction((ActionEvent e) -> {
if (debug) {
System.out.println("clicked");
}
findName.setText(findResults.getSelectionModel().getSelectedItem().toString());
if (debug) {
System.out.println(findResults.getSelectionModel().getSelectedItem().toString());
}
for (int i = 0; i < num_entries; i++) {
if (editItem.toLowerCase().contains(entryList[i].name.toLowerCase()) || entryList[i].name.toLowerCase().contains(editItem.toLowerCase())) {
pane.getChildren().remove(vBoxF);
pane.getChildren().add(editPane());
}
}
});
btnCancel.setOnAction((ActionEvent e) -> {
if (debug) {
System.out.println("clicked");
}
pane.getChildren().remove(vBoxF);
});
return vBoxF;
}
public static VBox editPane() {
// Set the button types.
Button btnEnter = new Button("Enter");
btnEnter.setMinSize(60, 40);
Button btnCancel = new Button("Cancel");
btnCancel.setMinSize(60, 40);
VBox vBoxEt = new VBox(15);
vBoxEt.setPadding(new Insets(15, 15, 15, 15));
vBoxEt.setPrefSize(500, 350);
vBoxEt.setStyle("-fx-background: gold");
findName.setMinWidth(300);
findName.setFont(new Font("Rockwell Extra Bold", 25));
HBox label = getHBox();
label.getChildren().add(findName);
TextField quantity = new TextField();
for (int i = 0; i < num_entries; i++) {
if(findName.getText().toLowerCase().contains(entryList[i].name.toLowerCase()))
quantity.setText(entryList[i].quantity);
}
quantity.setMinWidth(300);
Label numLabel = new Label("Quantity: ");
numLabel.setMinWidth(75);
numLabel.setFont(new Font("Rockwell", 15));
HBox enterNum = getHBox();
enterNum.getChildren().addAll(numLabel, quantity);
TextArea notes = new TextArea();
for (int i = 0; i < num_entries; i++) {
if(findName.getText().toLowerCase().contains(entryList[i].name.toLowerCase()))
notes.setText(entryList[i].note);
}
notes.setMinWidth(300);
notes.setWrapText(true);
notes.setMinHeight(250);
Label notesLabel = new Label("Notes: ");
notesLabel.setMinWidth(75);
notesLabel.setFont(new Font("Rockwell", 15));
HBox enterNotes = getHBox();
enterNotes.getChildren().addAll(notesLabel, notes);
HBox buttons = getHBox();
buttons.setTranslateX(350);
buttons.getChildren().addAll(btnEnter, btnCancel);
vBoxEt.getChildren().addAll(label, enterNum, enterNotes, buttons);
vBoxEt.setTranslateX(200);
btnEnter.setOnAction((ActionEvent e) -> {
if (debug)
System.out.println("clicked");
for (int i = 0; i < num_entries; i++) {
if(findName.getText().toLowerCase().contains(entryList[i].name.toLowerCase())) {
entryList[i].quantity = quantity.getText();
entryList[i].note = notes.getText();
}
}
try {
CopyInventoryToFile("inventory.txt");
}catch (Exception er){
Alert alert = new Alert(Alert.AlertType.ERROR);
alert.setTitle("Error");
alert.setContentText("There was a problem saving your changes!");
}
});
btnCancel.setOnAction((ActionEvent e) -> {
if (debug) {
System.out.println("clicked");
}
pane.getChildren().remove(vBoxEt);
});
return vBoxEt;
}
public static VBox listPane() {
VBox vBoxL = new VBox(15);
vBoxL.setPadding(new Insets(15, 15, 15, 15));
vBoxL.setPrefSize(500, 350);
vBoxL.setStyle("-fx-background: gold");
Button btnEnter = new Button("Edit");
btnEnter.setMinSize(60, 40);
Button btnCancel = new Button("Cancel");
btnCancel.setMinSize(60, 40);
Button btnSort = new Button("Sort");
btnSort.setMinSize(60, 40);
Label paneLabel = new Label("All Items");
paneLabel.setMinWidth(300);
paneLabel.setFont(new Font("Rockwell Extra Bold", 30));
HBox label = getHBox();
label.getChildren().add(paneLabel);
ListView allResults = new ListView();
allResults.setMinWidth(395);
allResults.setTranslateX(15);
allResults.setMinHeight(300);
results.clear();
find("");
allResults.setItems(results);
HBox buttons = getHBox();
buttons.setTranslateX(300);
buttons.getChildren().addAll(btnSort, btnEnter, btnCancel);
vBoxL.getChildren().addAll(label, allResults, buttons);
vBoxL.setTranslateX(200);

allResults.setOnMouseClicked((MouseEvent m) -> {
editItem = allResults.getSelectionModel().getSelectedItem().toString();
});
btnSort.setOnAction((ActionEvent e) -> {
if (debug) System.out.println("clicked");
Project_7_main.sortList();

pane.getChildren().remove(vBoxL);
pane.getChildren().add(listPane());
});
btnEnter.setOnAction((ActionEvent e) -> {
if (debug) {
System.out.println("clicked");
}
findName.setText(allResults.getSelectionModel().getSelectedItem().toString());
if (debug) {
System.out.println(allResults.getSelectionModel().getSelectedItem().toString());
}
pane.getChildren().remove(vBoxL);
pane.getChildren().add(editPane());
});
btnCancel.setOnAction((ActionEvent e) -> {
if (debug) {
System.out.println("clicked");
}
pane.getChildren().remove(vBoxL);
});
return vBoxL;
}
public static VBox deletePane() {
VBox vBoxD = new VBox(15);
vBoxD.setPadding(new Insets(15, 15, 15, 15));
vBoxD.setPrefSize(500, 350);
vBoxD.setStyle("-fx-background: gold;");
Button btnDelete = new Button("Delete");
btnDelete.setMinSize(60, 40);
Button btnCancel = new Button("Cancel");
btnCancel.setMinSize(60, 40);
Label paneLabel = new Label("Enter an item to delete");
paneLabel.setMinWidth(500);
paneLabel.setFont(new Font("Rockwell Extra Bold", 30));
HBox label = getHBox();
label.getChildren().add(paneLabel);
TextField delete = new TextField();
delete.setMinWidth(300);
Label nameLabel = new Label("Item: ");
nameLabel.setMinWidth(75);
nameLabel.setFont(new Font("Rockwell", 20));
HBox deleteItem = getHBox();
deleteItem.getChildren().addAll(nameLabel, delete);
HBox buttons = getHBox();
buttons.setTranslateX(350);
buttons.getChildren().addAll(btnDelete, btnCancel);
ListView items = new ListView();
items.setMinWidth(395);
items.setTranslateX(15);
items.setMinHeight(300);

results.clear();
items.setItems(results);
vBoxD.getChildren().addAll(label, deleteItem, items, buttons);
vBoxD.setTranslateX(200);

items.setOnMouseClicked((MouseEvent m) -> {
editItem = items.getSelectionModel().getSelectedItem().toString();
});

delete.setOnKeyReleased((KeyEvent event) -> {
results.clear();
Project_7_main.find(delete.getText());
if (debug) {
System.out.println(results);
}
items.setItems(results);
});
btnDelete.setOnAction((ActionEvent e) -> {
if (debug) {
System.out.println("clicked");
}
Project_7_main.delete(delete.getText());
items.setItems(results);
});
btnCancel.setOnAction((ActionEvent e) -> {
if (debug) {
System.out.println("clicked");
}
pane.getChildren().remove(vBoxD);
});
return vBoxD;
}
public static VBox savePane() {
VBox vBoxS = new VBox(15);
vBoxS.setPadding(new Insets(15, 15, 15, 15));
vBoxS.setPrefSize(500, 350);
vBoxS.setStyle("-fx-background: gold");
Button btnOk = new Button("OK!");
btnOk.setMinSize(60, 40);
Label paneLabel = new Label("Items saved!");
paneLabel.setMinWidth(300);
paneLabel.setAlignment(Pos.CENTER);
paneLabel.setFont(new Font("Rockwell Extra Bold", 30));
HBox label = getHBox();
label.getChildren().add(paneLabel);
HBox buttons = getHBox();
buttons.setTranslateX(400);
buttons.getChildren().addAll(btnOk);
vBoxS.getChildren().addAll(label, buttons);
vBoxS.setTranslateX(200);
btnOk.setOnAction((ActionEvent e) -> {
if (debug) {
System.out.println("clicked");
}
pane.getChildren().remove(vBoxS);
});
return vBoxS;
}
public static HBox getHBox() {
HBox hBox = new HBox(15);
hBox.setPadding(new Insets(15, 15, 15, 15));
hBox.setStyle("-fx-background: gold");
return hBox;
}
}

|alLaisiB agaraa

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