how to move get selected from jfxtreetableview javafx

To move the selected item in a TreeTableView control in JavaFX, you can use the getSelectionModel method of the TreeTableView class to get the TreeTableView.TreeTableViewSelectionModel object, and then use the select method of the selection model to move the selection to a different item.

Here is an example of how you can move the selected item in a TreeTableView control in JavaFX:

import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.TreeItem;
import javafx.scene.control.TreeTableColumn;
import javafx.scene.control.TreeTableView;
import javafx.stage.Stage;

public class Main extends Application {
    @Override
    public void start(Stage primaryStage) {
        TreeTableView<String> treeTableView = new TreeTableView<>();
        
        TreeTableColumn<String, String> column1 = new TreeTableColumn<>("Column 1");
        TreeTableColumn<String, String> column2 = new TreeTableColumn<>("Column 2");
        
        treeTableView.getColumns().add(column1);
        treeTableView.getColumns().add(column2);
        
        TreeItem<String> root = new TreeItem<>("Root");
        TreeItem<String> item1 = new TreeItem<>("Item 1");
        TreeItem<String> item2 = new TreeItem<>("Item 2");
        root.getChildren().addAll(item1, item2);
        
        treeTableView.setRoot(root);
        treeTableView.getSelectionModel().select(item2);
        
        Scene scene = new Scene(treeTableView, 400, 300);
        primaryStage.setScene(scene);
        primaryStage.show();
    }
    
    public static void main(String[] args) {
        launch(args);
    }
}

In this example, a TreeTableView control is created and two columns are added to it. A root TreeItem object and two child TreeItem objects are also created and added to the root. The select method of the selection model is then used to move the selection to the second child item.

Keep in mind that the TreeTableView control is a control that displays hierarchical data in a tabular format, with rows and columns. You can use the TreeTableColumn class to define the columns of the table, and the TreeItem class to define the rows and the hierarchical structure of the data. You can use the setRoot method of the TreeTableView class to set the root TreeItem object, and the getChildren method of the TreeItem class to add child items to a parent item.