Java FXML TableColumn不支持GregorianCalendar

Java FXML TableColumn not supporting GregorianCalendar

公历日历未正确显示在TableColumn的单元格中。当我使用弦、弦和双弦时，效果很好。当我运行应用程序时，包含日期的单元格显示

java.util.GregorianCalendar[time=?,areFieldsSet=false,areAllFieldsSet=false,lenient=true,zone=sun.util.calendar.ZoneInfo[id="Europe/Berlin",offset=3600000,dstSavings=3600000,..。

但我希望它在年-月-日显示

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public class ProjectenController implements Initializable {

@
FXML
private TableView < Project > TVProject;@
FXML
private TableColumn < Project, Integer > TCID;@
FXML
private TableColumn < Project, String > TCNaam;@
FXML
private TableColumn < Project, GregorianCalendar > TCBeginDatum;@
FXML
private TableColumn < Project, GregorianCalendar > TCEindDatum;@
FXML
private TableColumn < Project, Double > TCAanneemsom;@
FXML
private TableColumn < Project, String > TCGefactureerd;@
FXML
private TableColumn < Project, String > TCBeschrijving;

final ObservableList < Project > data = FXCollections.observableArrayList(
new Project(1,"500", new GregorianCalendar(2015, 1, 23), null, 1000, false, null)
);

@
Override
public void initialize(URL url, ResourceBundle rb) {
TCID.setCellValueFactory(new PropertyValueFactory < > ("ProjectNr"));
TCNaam.setCellValueFactory(new PropertyValueFactory < > ("Naam"));
TCBeginDatum.setCellValueFactory(new PropertyValueFactory < > ("BDatum"));
TCEindDatum.setCellValueFactory(new PropertyValueFactory < > ("EDatum"));
TCAanneemsom.setCellValueFactory(new PropertyValueFactory < > ("Aanneemsom"));
TCGefactureerd.setCellValueFactory(new PropertyValueFactory < > ("Gefactureerd"));
TCBeschrijving.setCellValueFactory(new PropertyValueFactory < > ("Beschrijving"));
TVProject.setItems(data);

}
}

public class Project {

private int ProjectNr;
private String Naam;
private GregorianCalendar BDatum;
private GregorianCalendar EDatum;
double Aanneemsom;
boolean Gefactureerd;
String Beschrijving;
List < Artikel > Artikelen;
List < Activiteit > Activiteiten;

public Project(int projectnr, String naam, GregorianCalendar bdatum,
GregorianCalendar edatum, double aansom, boolean fact, String besc) {
this.ProjectNr = projectnr;
this.Naam = naam;
this.BDatum = bdatum;
this.EDatum = edatum;
this.Aanneemsom = aansom;
this.Gefactureerd = fact;
this.Beschrijving = besc;
}

public int getProjectNr() {
return this.ProjectNr;
}

public String getNaam() {
return this.Naam;
}

public GregorianCalendar getBDatum() {
return this.BDatum;
}

public GregorianCalendar getEDatum() {
return this.EDatum;
}

public double getAanneemsom() {
return this.Aanneemsom;
}

public String getFactureerd() {
if (this.Gefactureerd == true) {
return"Ja";
} else {
return"Nee";
}
}

public String getBeschrijving() {
return this.Beschrijving;
}
}

创建返回带格式化日期的字符串的方法。在控制器中：

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@FXML
private TableColumn < Project, String> TCBeginDatum;
...
TCBeginDatum.setCellValueFactory(new PropertyValueFactory < > ("formattedBDatum"));

在你的豆子里：

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public String getFormattedBDatum() {
return this.BDatum!=null ? new SimpleDateFormat("yyyy/MM/dd").format(this.BDatum.getTime()) :"";
}

号