JavaFX：我可以访问它包含的节点吗？

因此，我有一个

边框窗格

，它有一个

文本区域

，设置在中间。它显示有关当前年度销售额的信息：

public static BorderPane addTransactionPanel() {

    BorderPane pane = new BorderPane();
    pane.setPrefSize(500, 320);
    final String[] monthName = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};

    final TextArea middle = new TextArea();
    middle.setPrefRowCount(1000);
    middle.setEditable(false);

    pane.setBottom(addBox);
    pane.setCenter(middle);

    for (int i = 2; i < li.get(index).getIncomeBook().getExpense().size(); i++) {
        if (li.get(index).getIncomeBook().getExpense().get(i).getDate().getYear() == year) {
                middle.appendText("New expense of: $" + moneyDisplay(li.get(index).getIncomeBook().getExpense().get(i).getValue()) + " on " + monthName[li.get(index).getIncomeBook().getExpense().get(i).getDate().getMonth() - 1] + "\n");
        }
    }

    return pane;
 }

从另一个方法访问transactionPanel的“中间”节点，清除它并再次写入

public void updateTransactionPanel(BorderPane transactionPanel){
    TextArea middle = (TextArea) transactionPanel.getCenter();
    middle.setText("Updated transaction panel text");
}

是的，所以是Stevantti:-）编辑了我答案中的打字错误来修复它。

public void updateTransactionPanel(BorderPane transactionPanel){
    TextArea middle = (TextArea) transactionPanel.getCenter();
    middle.setText("Updated transaction panel text");
}