Books.java
`final class Books extends Group {
private TableView table = new TableView();
private ObservableList<Book> data;
//private ObservableList<Person> plist;
final HBox hb = new HBox();
final TextField Title = new TextField();
final TextField Author = new TextField();
final TextField Publisher = new TextField();
final TextField Copywrite = new TextField();
final TextField ISBN = new TextField();
final Boolean CheckedOut = false;
final Label Whom;
final Button addButton = new Button("Add");
Boolean FirstRead = true;
//StringConverter<Person> converter;
public final class Book {
private final SimpleStringProperty title;
private final SimpleStringProperty author;
private final SimpleStringProperty publisher;
private final SimpleStringProperty copywrite;
private final SimpleStringProperty isbn;
private final BooleanProperty checkedout;
private final SimpleStringProperty who;
Book(String Titl, String Auth, String Publ,
String Cpywrit, String IsBn, Boolean ChkdOut, String WHO) {
this.title = new SimpleStringProperty(Titl);
this.author = new SimpleStringProperty(Auth);
this.publisher = new SimpleStringProperty(Publ);
this.copywrite = new SimpleStringProperty(Cpywrit);
this.isbn = new SimpleStringProperty(IsBn);
this.checkedout = new SimpleBooleanProperty(ChkdOut);
this.who = new SimpleStringProperty(WHO);
}
public boolean isCheckedOut() {
return checkedout.get();
}
public void setCheckedOut(boolean international) {
this.checkedout.set(international);
}
public BooleanProperty isCheckedOutProperty() {
return checkedout;
}
public String getTitle() {
return title.get();
}
public void setTitle(String Title) {
title.set(Title);
}
public String getAuthor() {
return author.get();
}
public void setAutor(String Author) {
author.set(Author);
}
public String getPublisher() {
return publisher.get();
}
public void setPublisher(String Publisher) {
publisher.set(Publisher);
}
public String getCopywrite() {
return copywrite.get();
}
public void setCopywrite(String Copywrite) {
copywrite.set(Copywrite);
}
public String getIsbn() {
return isbn.get();
}
public void setIsbn(String ISBN) {
isbn.set(ISBN);
}
public Boolean getIo() {
return checkedout.get();
}
public void setIo(Boolean CheckedOut) {
checkedout.set(CheckedOut);
}
public String getWho() {
return who.get();
}
public void setWho(String Who) {
who.set(Who);
}
public String isWhoProperty() {
return getWho();
}
}
public Books(final File User) throws IOException {
this.Whom = new Label("inLibrary");
this.data = FXCollections.<Book>observableArrayList(
(Book bk) -> new Observable[]{bk.isCheckedOutProperty()
});
PhoneList list = new PhoneList(User);
final Label label = new Label("Book List");
label.setFont(new Font("Arial", 20));
table.setPrefSize(600, 400);
table.setEditable(true);
TableColumn nameCol = bookName();
TableColumn authorCol = bookAuthor();
TableColumn publisherCol = bookPublisher();
TableColumn copywriteCol = bookCopywrite();
TableColumn isbnCol = bookISBN();
TableColumn<Book, Boolean> ioCol = ioCol();
///// START work area
final TableColumn whoCol;
whoCol = new TableColumn<>("Who to");
whoCol.setMinWidth(100);
whoCol.setEditable(true);
whoCol.setCellValueFactory(
new PropertyValueFactory<Person, String>("who"));
whoCol.setCellFactory(ComboBoxTableCell.forTableColumn(list.phonelist));
////////////////////////////////////////////////////////////////////////////////
//whoCol.setCellValueFactory(new PropertyValueFactory<>("who"));
//whoCol.setCellFactory(ComboBoxTableCell.<String, Person>forTableColumn(converter, plist));
//whoCol.setCellFactory(ComboBoxTableCell.forTableColumn(list.phonelist));
/*
whoCol.setOnEditCommit((TableColumn.CellEditEvent<Book, String> t) -> {
((Book) t.getTableView().getItems().get(
t.getTablePosition().getRow()))
.setWho(t.getNewValue());
try {
writeFile(User);
} catch (IOException ex) {
Logger.getLogger(Books.class.getName()).log(Level.SEVERE, null, ex);
}
});
*/
//// END work area
AddBook(nameCol, authorCol, publisherCol, copywriteCol, isbnCol, ioCol, whoCol, User);
data.addListener((javafx.collections.ListChangeListener.Change<? extends Book> change) -> {
while (change.next()) {
if (change.wasUpdated() && FirstRead != true) {
try {
System.out.println("List changed");
writeFile(User);
} catch (IOException ex) {
Logger.getLogger(Books.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
});
final VBox vbox = new VBox();
vbox.setSpacing(5);
vbox.setPadding(new Insets(10, 0, 0, 10));
vbox.getChildren().addAll(label, table, hb);
getChildren().addAll(vbox);
try {
readFile(User);
} catch (Exception ex) {
Logger.getLogger(Books.class.getName()).log(Level.SEVERE, null, ex);
}
}
private TableColumn<Book, Boolean> ioCol() {
final TableColumn<Book, Boolean> ioCol = new TableColumn<>("In/Out");
ioCol.setMinWidth(50);
ioCol.setEditable(true);
ioCol.setCellValueFactory(new PropertyValueFactory<>("isCheckedOut"));
final Callback<TableColumn<Book, Boolean>, TableCell<Book, Boolean>> iocellFactory = CheckBoxTableCell.forTableColumn(ioCol);
ioCol.setCellFactory((TableColumn<Book, Boolean> column) -> {
TableCell<Book, Boolean> iocell = iocellFactory.call(column);
iocell.setAlignment(Pos.CENTER);
return iocell;
});
ioCol.setCellFactory(iocellFactory);
return ioCol;
}
private TableColumn bookISBN() {
//Column ISBN Number
TableColumn isbnCol = new TableColumn("ISBN #");
isbnCol.setMinWidth(100);
isbnCol.setCellValueFactory(
new PropertyValueFactory<>("isbn"));
isbnCol.setCellFactory(TextFieldTableCell.forTableColumn());
return isbnCol;
}
private TableColumn bookCopywrite() {
//Column Copywrite
TableColumn copywriteCol = new TableColumn("Copywrite");
copywriteCol.setMinWidth(100);
copywriteCol.setCellValueFactory(
new PropertyValueFactory<>("copywrite"));
copywriteCol.setCellFactory(TextFieldTableCell.forTableColumn());
return copywriteCol;
}
private TableColumn bookPublisher() {
//Column Publisher
TableColumn publisherCol = new TableColumn("Publisher");
publisherCol.setMinWidth(100);
publisherCol.setCellValueFactory(
new PropertyValueFactory<>("publisher"));
publisherCol.setCellFactory(TextFieldTableCell.forTableColumn());
return publisherCol;
}
private TableColumn bookAuthor() {
//Column Author
TableColumn authorCol = new TableColumn("Author");
authorCol.setMinWidth(100);
authorCol.setCellValueFactory(
new PropertyValueFactory<>("author"));
authorCol.setCellFactory(TextFieldTableCell.forTableColumn());
return authorCol;
}
private TableColumn bookName() {
// Column Name
TableColumn nameCol = new TableColumn("Title");
nameCol.setMaxWidth(100);
nameCol.setCellValueFactory(
new PropertyValueFactory<>("title"));
nameCol.setCellFactory(TextFieldTableCell.forTableColumn());
return nameCol;
}
private void AddBook(TableColumn nameCol, TableColumn authorCol, TableColumn publisherCol,
TableColumn copywriteCol, TableColumn isbnCol, TableColumn ioCol, TableColumn whoCol, final File User) {
table.setItems(data);
table.getColumns().addAll(nameCol, authorCol, publisherCol, copywriteCol, isbnCol, ioCol, whoCol);
addButton.setOnAction(
new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
addBook();
try {
writeFile(User);
} catch (IOException ex) {
Logger.getLogger(Books.class.getName()).log(Level.SEVERE, null, ex);
}
}
private void addBook() {
data.add(new Book(
Title.getText(),
Author.getText(),
Publisher.getText(),
Copywrite.getText(),
ISBN.getText(),
CheckedOut,
Whom.getText()
));
Title.clear();
Author.clear();
Publisher.clear();
Copywrite.clear();
ISBN.clear();
}
});
hb.getChildren().addAll(Title, Author, Publisher,
Copywrite, ISBN, addButton);
hb.setSpacing(10);
Title.setPromptText("Tile of Book");
Title.setMaxWidth(nameCol.getPrefWidth());
Author.setMaxWidth(authorCol.getPrefWidth());
Author.setPromptText("Author");
Publisher.setMaxWidth(publisherCol.getPrefWidth());
Publisher.setPromptText("Publisher");
Copywrite.setMaxWidth(copywriteCol.getPrefWidth());
Copywrite.setPromptText("Year Copywrite");
ISBN.setMaxWidth(isbnCol.getPrefWidth());
ISBN.setPromptText("ISBN #");
}
private void writeFile(File User) throws IOException {
File file = new File(User + "/Books.txt");
FileWriter fw = new FileWriter(file);
BufferedWriter bw = new BufferedWriter(fw);
PrintWriter outFile = new PrintWriter(bw);
if (table.getItems() != null) {
data.stream().map((data1) -> {
if (data1.getTitle().equals("")) {
data1.setTitle("No_Title");
}
return data1;
}).map((data1) -> {
if (data1.getAuthor().equals("")) {
data1.setAutor("No_Author");
}
return data1;
}).map((data1) -> {
if (data1.getPublisher().equals("")) {
data1.setPublisher("No_Publisher");
}
return data1;
}).map((data1) -> {
if (data1.getCopywrite().equals("")) {
data1.setCopywrite("No_Copywrite");
}
return data1;
}).map((data1) -> {
if (data1.getIsbn().equals("")) {
data1.setIsbn("No_ISBN");
}
return data1;
}).map((data1) -> {
if (data1.getWho().equals("")) {
data1.setWho("InLibrary");
}
return data1;
}).map((data1) -> {
outFile.println(data1.getTitle());
return data1;
}).map((data1) -> {
outFile.println(data1.getAuthor());
return data1;
}).map((data1) -> {
outFile.println(data1.getPublisher());
return data1;
}).map((data1) -> {
outFile.println(data1.getCopywrite());
return data1;
}).map((data1) -> {
outFile.println(data1.getIsbn());
return data1;
}).map((data1) -> {
outFile.println(data1.getIo());
return data1;
}).forEach((data1) -> {
outFile.println(data1.getWho());
});
outFile.close();
}
}
private void readFile(File User) throws Exception {
try {
String name, author, publisher, copywrite, isbn, whom;
Boolean InOut;
try (Scanner inFile = new Scanner(new File(User + "/Books.txt"))) {
while (inFile.hasNextLine()) {
name = inFile.next();
author = inFile.next();
publisher = inFile.next();
copywrite = inFile.next();
isbn = inFile.next();
InOut = inFile.nextBoolean();
whom = inFile.next();
data.add(new Book(name, author, publisher, copywrite,
isbn, InOut, whom));
}
}
table.setItems(data);
} //insert catch statements
catch (FileNotFoundException exception) {
System.out.println("File not found");
} catch (ArrayIndexOutOfBoundsException AIOOBexception) {
System.out.println("Array Index is out of bounds");
} catch (IllegalArgumentException IAexception) {
System.out.println("Divide by zero error");
} catch (NoSuchElementException NAexception) {
}
FirstRead = false;
}
}`
PhoneList.java
`final class PhoneList extends Group {
private TableView table = new TableView();
final ObservableList<Person> phonelist = FXCollections.observableArrayList();
final HBox hb = new HBox();
public PhoneList(final File User) {
final Label label = new Label("Phone List");
label.setFont(new Font("Arial", 20));
table.setEditable(true);
TableColumn firstNameCol = new TableColumn("First Name");
firstNameCol.setMaxWidth(100);
firstNameCol.setCellValueFactory(
new PropertyValueFactory<>("firstName"));
firstNameCol.setCellFactory(TextFieldTableCell.forTableColumn());
firstNameCol.setOnEditCommit(
new EventHandler<CellEditEvent<Person, String>>() {
@Override
public void handle(CellEditEvent<Person, String> t) {
try {
((Person) t.getTableView().getItems().get(
t.getTablePosition().getRow())).setFirstName(t.getNewValue());
writeFile(User);
} catch (IOException ex) {
Logger.getLogger(PhoneList.class.getName()).log(Level.SEVERE, null, ex);
}
}
});
TableColumn lastNameCol = new TableColumn("Last Name");
lastNameCol.setMinWidth(100);
lastNameCol.setCellValueFactory(
new PropertyValueFactory<>("lastName"));
lastNameCol.setCellFactory(TextFieldTableCell.forTableColumn());
lastNameCol.setOnEditCommit(
new EventHandler<CellEditEvent<Person, String>>() {
@Override
public void handle(CellEditEvent<Person, String> t) {
try {
((Person) t.getTableView().getItems().get(
t.getTablePosition().getRow())).setLastName(t.getNewValue());
writeFile(User);
} catch (IOException ex) {
Logger.getLogger(PhoneList.class.getName()).log(Level.SEVERE, null, ex);
}
}
});
TableColumn phoneNumCol = new TableColumn("Phone Number");
phoneNumCol.setMinWidth(100);
phoneNumCol.setCellValueFactory(
new PropertyValueFactory<>("phoneNum"));
phoneNumCol.setCellFactory(TextFieldTableCell.forTableColumn());
phoneNumCol.setOnEditCommit(
new EventHandler<CellEditEvent<Person, String>>() {
@Override
public void handle(CellEditEvent<Person, String> t) {
try {
((Person) t.getTableView().getItems().get(
t.getTablePosition().getRow())).setPhoneNum(t.getNewValue());
writeFile(User);
} catch (IOException ex) {
Logger.getLogger(PhoneList.class.getName()).log(Level.SEVERE, null, ex);
}
}
});
TableColumn emailCol = new TableColumn("Email");
emailCol.setMinWidth(120);
emailCol.setCellValueFactory(
new PropertyValueFactory<>("email"));
emailCol.setCellFactory(TextFieldTableCell.forTableColumn());
emailCol.setOnEditCommit(
new EventHandler<CellEditEvent<Person, String>>() {
@Override
public void handle(CellEditEvent<Person, String> t) {
try {
((Person) t.getTableView().getItems().get(
t.getTablePosition().getRow())).setEmail(t.getNewValue());
writeFile(User);
} catch (IOException ex) {
Logger.getLogger(PhoneList.class.getName()).log(Level.SEVERE, null, ex);
}
}
});
table.setItems(phonelist);
table.getColumns().addAll(firstNameCol, lastNameCol, phoneNumCol, emailCol);
final TextField addFirstName = new TextField();
addFirstName.setPromptText("First Name");
addFirstName.setMaxWidth(firstNameCol.getPrefWidth());
final TextField addLastName = new TextField();
addLastName.setMaxWidth(lastNameCol.getPrefWidth());
addLastName.setPromptText("Last Name");
final TextField addPhoneNum = new TextField();
addPhoneNum.setMaxWidth(lastNameCol.getPrefWidth());
addPhoneNum.setPromptText("Phone Number");
final TextField addEmail = new TextField();
//addEmail.setMaxWidth(emailCol.getPrefWidth());
addEmail.setPrefWidth(175);
addEmail.setPromptText("Email");
final Button addButton = new Button("Add");
addButton.setOnAction(new EventHandler<ActionEvent>() {
@Override
public void handle(ActionEvent e) {
try {
phonelist.add(new Person(
addFirstName.getText(),
addLastName.getText(),
addPhoneNum.getText(),
addEmail.getText()));
addFirstName.clear();
addLastName.clear();
addPhoneNum.clear();
addEmail.clear();
writeFile(User);
} catch (IOException ex) {
Logger.getLogger(PhoneList.class.getName()).log(Level.SEVERE, null, ex);
}
}
});
hb.getChildren().addAll(addFirstName, addLastName, addPhoneNum, addEmail, addButton);
hb.setSpacing(3);
final VBox vbox = new VBox();
vbox.setSpacing(5);
vbox.setPadding(new Insets(10, 0, 0, 10));
vbox.getChildren().addAll(label, table, hb);
getChildren().addAll(vbox);
try {
readFile(User);
} catch (Exception ex) {
Logger.getLogger(PhoneList.class.getName()).log(Level.SEVERE, null, ex);
}
}
private void readFile(File User) throws Exception {
try {
String fN, lN, pNum, eMail;
try (Scanner inFile = new Scanner(new File(User + "/PhoneList.txt"))) {
while (inFile.hasNextLine()) {
fN = inFile.next();
lN = inFile.next();
pNum = inFile.next();
eMail = inFile.next();
phonelist.add(new Person(fN, lN, pNum, eMail));
}
}
table.setItems(phonelist);
} //insert catch statements
catch (FileNotFoundException exception) {
System.out.println("File not found");
} catch (ArrayIndexOutOfBoundsException AIOOBexception) {
System.out.println("Array Index is out of bounds");
} catch (IllegalArgumentException IAexception) {
System.out.println("Divide by zero error");
} catch (NoSuchElementException NAexception) {
}
}
public void writeFile(File User) throws IOException {
File file = new File(User + "/PhoneList.txt");
FileWriter fw = new FileWriter(file);
BufferedWriter bw = new BufferedWriter(fw);
PrintWriter outFile = new PrintWriter(bw);
if (table.getItems() != null) {
for (int i = 0; i < phonelist.size(); i++) {
outFile.println(phonelist.get(i).getFirstName());
outFile.println(phonelist.get(i).getLastName());
if (phonelist.get(i).getPhoneNum().equals("")) {
phonelist.get(i).setPhoneNum("No_Phone");
}
if (phonelist.get(i).getEmail().equals("")) {
phonelist.get(i).setEmail("No_Email");
}
outFile.println(phonelist.get(i).getPhoneNum());
outFile.println(phonelist.get(i).getEmail());
}
outFile.close();
}
}
public static class Person {
private final SimpleStringProperty firstName;
private final SimpleStringProperty lastName;
private final SimpleStringProperty phoneNum;
private final SimpleStringProperty eMail;
Person(String fName, String lName, String pNum, String email) {
this.firstName = new SimpleStringProperty(fName);
this.lastName = new SimpleStringProperty(lName);
this.phoneNum = new SimpleStringProperty(pNum);
this.eMail = new SimpleStringProperty(email);
}
public String getFirstName() {
return firstName.get();
}
public void setFirstName(String fName) {
firstName.set(fName);
}
public String getLastName() {
return lastName.get();
}
public void setLastName(String lName) {
lastName.set(lName);
}
public String getPhoneNum() {
return phoneNum.get();
}
public void setPhoneNum(String pNum) {
phoneNum.set(pNum);
}
public String getEmail() {
return eMail.get();
}
public void setEmail(String email) {
eMail.set(email);
}
public String getName() {
String Name = getFirstName() + "_" + getLastName();
return Name;
}
public Observable isWhoProperty() {
return firstName;
}
@Override
public String toString() {
String Name = getFirstName() + "_" + getLastName();
return Name;
}
}
class EditingCell extends TableCell<Person, String> {
private TextField textField;
public EditingCell() {
}
@Override
public void startEdit() {
if (!isEmpty()) {
super.startEdit();
createTextField();
setText(null);
setGraphic(textField);
textField.selectAll();
}
}
@Override
public void cancelEdit() {
super.cancelEdit();
setText((String) getItem());
setGraphic(null);
}
@Override
public void updateItem(String item, boolean empty) {
super.updateItem(item, empty);
if (empty) {
setText(null);
setGraphic(null);
} else {
if (isEditing()) {
if (textField != null) {
textField.setText(getString());
}
setText(null);
setGraphic(textField);
} else {
setText(getString());
setGraphic(null);
}
}
}
private void createTextField() {
textField = new TextField(getString());
textField.setMinWidth(this.getWidth() - this.getGraphicTextGap() * 2);
textField.focusedProperty().addListener(new ChangeListener<Boolean>() {
@Override
public void changed(ObservableValue<? extends Boolean> arg0,
Boolean arg1, Boolean arg2) {
if (!arg2) {
commitEdit(textField.getText());
}
}
});
}
private String getString() {
return getItem() == null ? "" : getItem();
}
}
}`
有了这两个，我确实让ComboBoxTableCell正常工作......非常感谢你。现在是时候弄清楚如何将它保存到.txt文件。嗯想不出更多的话要说 - 确保你也得到MykeZ文件夹及其内容。但是这个版本只需要它可以工作，所以你可以在必要时添加新的数据。
`final TableColumn<Book, Person> whoCol;
whoCol = new TableColumn<>("Who to");
whoCol.setMinWidth(100);
whoCol.setEditable(true);
whoCol.setCellValueFactory(new PropertyValueFactory("who"));
whoCol.setCellFactory(ComboBoxTableCell.forTableColumn(list.phonelist));
whoCol.setOnEditCommit(new EventHandler<TableColumn.CellEditEvent<Book, Person>>() {
public void handle(TableColumn.CellEditEvent<Book, Person> evt) {
try {
evt.getRowValue().setWho(evt.getNewValue().getName());
writeFile(User);
} catch (IOException ex) {
Logger.getLogger(Books.class.getName()).log(Level.SEVERE, null, ex);
}
}
});`
并且已经完成请在这篇帖子中给出你的自信，我非常高兴谢谢你最好的
答案 0 :(得分：0)
我真的不明白这个问题，但你应该这样做。
编辑：从简要地看你的代码，你可能会尝试做这样的事情;
import javafx.application.Application;
import javafx.beans.property.SimpleIntegerProperty;
import javafx.beans.property.SimpleObjectProperty;
import javafx.beans.property.SimpleStringProperty;
import javafx.collections.FXCollections;
import javafx.collections.ObservableList;
import javafx.scene.Scene;
import javafx.scene.control.TableColumn;
import javafx.scene.control.TableView;
import javafx.scene.control.cell.ComboBoxTableCell;
import javafx.scene.control.cell.PropertyValueFactory;
import javafx.scene.layout.StackPane;
import javafx.stage.Stage;
import javafx.util.StringConverter;
public class ComboBoxTable extends Application {
@Override
public void start(Stage stage) {
ObservableList<Person> persons = FXCollections.observableArrayList();
persons.addAll(new Person("Jack"),new Person("Jill"),new Person("John"));
ObservableList<Book> books = FXCollections.observableArrayList();
for (int i=1;i<5;i++)books.add(new Book(i*100,new Person("wrong guy")));
StringConverter<Person> cvrt = new StringConverter<Person>(){
@Override
public String toString(Person person) {
return person.getName();
}
@Override
public Person fromString(String string) {
return null;
}
};
TableView<Book> tv = new TableView(books);
tv.setEditable(true);
tv.getSelectionModel().setCellSelectionEnabled(true);
TableColumn<Book, Integer> numCol = new TableColumn("Book Num");
numCol.setCellValueFactory(new PropertyValueFactory("num"));
TableColumn<Book, Person> nameCol = new TableColumn("Name");
nameCol.setCellValueFactory(new PropertyValueFactory("person"));
nameCol.setCellFactory(ComboBoxTableCell.<Book, Person>forTableColumn(cvrt,persons));
tv.getColumns().addAll(numCol, nameCol);
StackPane root = new StackPane(tv);
Scene scene = new Scene(root, 300, 250);
stage.setScene(scene);
stage.show();
}
public class Person{
SimpleStringProperty name;
public Person(String name) {
this.name = new SimpleStringProperty(name);
}
public SimpleStringProperty nameProperty() {
return name;
}
public String getName() {
return name.get();
}
//in simple cases you can just do this and not use a string converter
@Override
public String toString(){
return name.get();
}
}
public class Book{
SimpleIntegerProperty num;
SimpleObjectProperty<Person> person;
public Book(int num, Person person) {
this.num = new SimpleIntegerProperty(num);
this.person = new SimpleObjectProperty<>(person);
}
public SimpleIntegerProperty numProperty() {
return num;
}
public SimpleObjectProperty<Person> personProperty() {
return person;
}
}
}
查看TableView，TableColumn和ComboBoxTableCell documentation并注意<S,T>
您获取对Person的引用的原因是因为ComboBox不知道如何将其转换为字符串。我放了一些简单的代码来覆盖Person类的toString（）方法。如果你没有指定StringConverter，它就不会知道如何转换，只是对对象使用toString（）。
再次编辑：查看您的Book类，您有StringProperty谁和您尝试在该字段中存储人。查看我的代码，我使用ObjectProperty <Person>。
您可以按照自己的方式执行操作，但在我的示例中覆盖Person类中的toString（），并且不要使用StringConverter。
@Override
public String toString(){
return name.get();
}
然后像这样制作TableColumn并使用类型<Book, Person>
TableColumn<Book, Person> whoCol = new TableColumn<>("Who to");
whoCol.setMinWidth(100);
//editable is true for columns by default.
whoCol.setCellValueFactory(new PropertyValueFactory("who"));
whoCol.setCellFactory(ComboBoxTableCell.forTableColumn(p.phonelist));
whoCol.setOnEditCommit((evt) -> {
evt.getRowValue().setWho(evt.getNewValue().getName());
});
我创建了一个onEditCommit，因此Book类将知道如何存储Person信息。