JAVA FXCollections LoadException类不是有效类型 [英] JAVA FXCollections LoadException Class is not a valid type
问题描述
我正在尝试使用这个教程。
我坚持将数据从我的Person.java填充到TableView。
Im stuck on populating data from my "Person.java" to the TableView.
我将问题追溯到部分< Person firstName =JacoblastName =Smithemail =jacob.smith@example.com/>
在最底部的fxmltableview.fxml文件中。
I tracked the problem down to the part <Person firstName="Jacob" lastName="Smith" email="jacob.smith@example.com" />
inside the "fxmltableview.fxml" file at the very bottom.
所以看起来由于某种原因,我的observableArrayList并不是全部包含Person。 java对象。允许String.java。
Im出于对文件进行实验的想法,因为我在教程中逐字逐句阅读,我看不出我的文件之间有任何区别。每当我删除< Person someStuff />
时,它都能正常工作。
So it seems that for some reason my "observableArrayList" isn't allwed to contain "Person.java" objects. "String.java" is allowed.
Im out of ideas for experementing with the files, as i read several times word by word through the tutorial and i don't see any difference between my files. Whenever i remove the <Person someStuff/>
it works fine.
我怎样才能摆脱这个恼人的错误?
How can i get rid of this annoying error?
引起:javafx.fxml.LoadException:Person不是有效类型。
/D:/workspace/TableViewExampleFXML/bin/application/fxmltableview.fxml:40
Caused by: javafx.fxml.LoadException: Person is not a valid type. /D:/workspace/TableViewExampleFXML/bin/application/fxmltableview.fxml:40
FXML-File:
FXML-File:
<?xml version="1.0" encoding="UTF-8"?>
<?import fxmltableview.*?>
<?import javafx.scene.control.TableView?>
<?import javafx.scene.control.TableColumn?>
<?import javafx.scene.control.cell.PropertyValueFactory?>
<?import javafx.scene.layout.GridPane?>
<?import javafx.collections.FXCollections?>
<GridPane alignment="CENTER" hgap="10.0" maxHeight="-Infinity"
maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity"
prefHeight="400.0" prefWidth="600.0" vgap="10.0" xmlns="http://javafx.com/javafx/8"
xmlns:fx="http://javafx.com/fxml/1" fx:controller="application.FXMLTableViewController">
<TableView fx:id="tableView" prefHeight="200.0" prefWidth="200.0"
GridPane.columnIndex="0" GridPane.rowIndex="1">
<columns>
<TableColumn prefWidth="75.0" text="First Name">
<cellValueFactory>
<PropertyValueFactory property="firstName" />
</cellValueFactory>
</TableColumn>
<TableColumn prefWidth="75.0" text="Last Name">
<cellValueFactory>
<PropertyValueFactory property="lastName" />
</cellValueFactory>
</TableColumn>
<TableColumn prefWidth="75.0" text="Email Address">
<cellValueFactory>
<PropertyValueFactory property="email" />
</cellValueFactory>
</TableColumn>
</columns>
<items>
<FXCollections fx:factory="observableArrayList">
<Person firstName="Jacob" lastName="Smith" email="jacob.smith@example.com" />
</FXCollections>
</items>
</TableView>
</GridPane>
Person.java是从教程中复制/粘贴的,这就是为什么我很沮丧它没有不适合我。无论如何,我会把它贴在这里。
The "Person.java" is copy/pasted from the tutorial thats why im so frustrated that it doesn't work for me. Anyway i will paste it here.
package application;
import javafx.beans.property.SimpleStringProperty;
public class Person {
private final SimpleStringProperty firstName = new SimpleStringProperty("");
private final SimpleStringProperty lastName = new SimpleStringProperty("");
private final SimpleStringProperty email = new SimpleStringProperty("");
public Person() {
this("", "", "");
}
public Person(String firstName, String lastName, String email) {
setFirstName(firstName);
setLastName(lastName);
setEmail(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 fName) {
lastName.set(fName);
}
public String getEmail() {
return email.get();
}
public void setEmail(String fName) {
email.set(fName);
}
}
推荐答案
你更改了 Person
类的包名称。在本教程中,包名称为 fxmltableview
,其中包含 application
。您没有相应地更改导入。所以你需要
You changed the package name for your Person
class. In the tutorial, the package name is fxmltableview
, where you have application
. You didn't change the import accordingly. So you need
<?import application.Person ?>
而不是
<?import fxmltableview.* ?>
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