JFX JTable的編輯與雙重價值

Question

您好我正在學習JFX和TRIN寫一個簡單的JTable例子和運行應用程序時，我得到一個錯誤

我的代碼段錯誤出現是

itemPrice.setCellValueFactory(new PropertyValueFactory<Item, Double>("itemPrice")); 
itemPrice.setCellFactory(TextFieldTableCell.forTableColumn()); 
itemPrice.setOnEditCommit(
     new EventHandler<TableColumn.CellEditEvent<Item, Double>>() { 
      @Override 
      public void handle(TableColumn.CellEditEvent<Item, Double> t) { 
       ((Item) t.getTableView().getItems().get(
         t.getTablePosition().getRow()) 
       ).setItemPrice(t.getNewValue()); 
      } 

錯誤是

Exception in thread "JavaFX Application Thread" java.lang.ClassCastException: java.lang.Double cannot be cast to java.lang.String 
    at javafx.util.converter.DefaultStringConverter.toString(DefaultStringConverter.java:34) 
    at javafx.scene.control.cell.CellUtils.getItemText(CellUtils.java:100) 
    at javafx.scene.control.cell.CellUtils.updateItem(CellUtils.java:201) 
    at javafx.scene.control.cell.TextFieldTableCell.updateItem(TextFieldTableCell.java:204) 
    at javafx.scene.control.TableCell.updateItem(TableCell.java:663) 
    at javafx.scene.control.TableCell.indexChanged(TableCell.java:468) 
    at javafx.scene.control.IndexedCell.updateIndex(IndexedCell.java:116) 
    at com.sun.javafx.scene.control.skin.TableRowSkinBase.updateCells(TableRowSkinBase.java:523) 
    at com.sun.javafx.scene.control.skin.TableRowSkinBase.init(TableRowSkinBase.java:147) 
    at com.sun.javafx.scene.control.skin.TableRowSkin.<init>(TableRowSkin.java:64) 
    at javafx.scene.control.TableRow.createDefaultSkin(TableRow.java:212) 
    at javafx.scene.control.Control.impl_processCSS(Control.java:859) 
    at javafx.scene.Node.processCSS(Node.java:9035) 
    at javafx.scene.Node.applyCss(Node.java:9132) 
    at com.sun.javafx.scene.control.skin.VirtualFlow.setCellIndex(VirtualFlow.java:1957) 
    at com.sun.javafx.scene.control.skin.VirtualFlow.getCell(VirtualFlow.java:1790) 
    at com.sun.javafx.scene.control.skin.VirtualFlow.getCellLength(VirtualFlow.java:1872) 
    at com.sun.javafx.scene.control.skin.VirtualFlow.computeViewportOffset(VirtualFlow.java:2511) 
    at com.sun.javafx.scene.control.skin.VirtualFlow.layoutChildren(VirtualFlow.java:1189) 
    at javafx.scene.Parent.layout(Parent.java:1076) 
    at javafx.scene.Parent.layout(Parent.java:1082) 
    at javafx.scene.Parent.layout(Parent.java:1082) 
    at javafx.scene.Parent.layout(Parent.java:1082) 
    at javafx.scene.Scene.doLayoutPass(Scene.java:552) 
    at javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2397) 
    at com.sun.javafx.tk.Toolkit.lambda$runPulse$30(Toolkit.java:314) 
    at com.sun.javafx.tk.Toolkit$$Lambda$216/252608964.run(Unknown Source) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:313) 
    at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:340) 
    at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:525) 
    at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:505) 
    at com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$400(QuantumToolkit.java:334) 
    at com.sun.javafx.tk.quantum.QuantumToolkit$$Lambda$42/820829455.run(Unknown Source) 
    at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:95) 
    at com.sun.glass.ui.win.WinApplication._runLoop(Native Method) 
    at com.sun.glass.ui.win.WinApplication.lambda$null$145(WinApplication.java:101) 
    at com.sun.glass.ui.win.WinApplication$$Lambda$38/1329190985.run(Unknown Source) 
    at java.lang.Thread.run(Thread.java:745) 

，我知道這是由於在java中鑄造的問題，但duno編輯處理程序JFX相同的代碼是如何工作的字符串數據類型的作品如何解決，幫助/提示請

Answer 1

使用

itemPrice.setCellFactory(TextFieldTableCell.forTableColumn(new DoubleStringConverter()));