JavaFX从读取文件中取出数组 - 不起作用

Question

好的，这个程序允许用户输入文件位置。 恩。 /Users/username/Desktop/Words.txt。它应该在用户单击提交后打开文件，获取其中的任何文本并按字母顺序对单词进行排序。当我放入正确的文件路径但是它没有对其内容进行排序并将结果发布在窗口窗格中时，一切都有效。

这是代码：

import java.io.*;
import java.util.*;
import javafx.application.Application;
import javafx.geometry.Pos;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.layout.BorderPane;
import javafx.scene.layout.HBox;
import javafx.scene.text.Text;
import javafx.scene.control.Button;
import javafx.scene.control.TextField;
import javafx.scene.control.TextArea;

public class AlphabeticalOrder extends Application {

    public static void main(String[] args) {
        launch(args);
    }

   TextField fileName = new TextField();
   Button submitButton = new Button("Submit");
   TextArea outputArea = new TextArea();

   public void button() {
       submitButton.setOnAction(e -> {
System.out.println("button event");
           if(fileName.getText().length() > 0) {
               submitButtonclick();
           }
       });
   }

   public void filename(String[] file) throws IOException {
       // Check command-line parameter usage
       if (file.length > 0) {
           fileName.setText(file[0]);

           System.out.println("Source file: " + fileName.getText());
       }

       button();
   }

   @Override
   public void start(Stage primaryStage) {
       try {
           BorderPane root = new BorderPane();

           Scene scene = new Scene(root,400,400);
          // scene.getStylesheets().add(AlphabeticalOrder.class.getResource("/background.css").toExternalForm());

           primaryStage.show();

           // Set the stage title
           primaryStage.setTitle("AlphabeticalOrder");

           // Place the scene in the stage
           primaryStage.setScene(scene);

           // Display the stage
           primaryStage.show();

           // Hold a button in an HBox
           HBox inputBox = new HBox();
           inputBox.setSpacing(10);
           inputBox.setAlignment(Pos.CENTER);
           inputBox.getChildren().addAll(new Text("Filename:"));
           inputBox.getChildren().addAll(fileName);
           inputBox.getChildren().addAll(submitButton);
           root.setTop(inputBox);

           //This creates a text box to display the results
           //from reading the file in a pane
           outputArea.setStyle("-fx-text-fill: black");
           outputArea.setStyle("-fx-background-color: grey");
           root.setCenter(outputArea);
button();
       } catch(Exception e) {
           e.printStackTrace();
       }
   }


   public void submitButtonclick() {
        if(fileName.getText().length() > 0) {
            File sourceFile = new File(fileName.getText());
            if (!sourceFile.exists()) {
                System.out.println("Source file " + fileName.getText()
                    + " does not exist");
            }
            else
               System.out.println("Source file " + fileName.getText() + " open OK");
        }

        fileName.setText("Test 1");
    }


   class SortFile
   {
       //sorting function
   void sortArray(String array[]) {
       //Loop for no.of passes
   for(int i=0;i<array.length-1;i++)

       //Repeat no.of comparisons
       for(int j=0;j<array.length-i-1;j++)

           //Comparing adjacent elements
           if(array[j].compareTo(array[j+1])>0)
   {
               //Swap using temp variable
               String temp=array[j];
               array[j]=array[j+1];
               array[j+1]=temp;
              }
   }
   public void reader(String args[])
   {
       //Creating File object
       File freader;

       //Scanner for reading
       Scanner filescanner;

       //Array list for dynamic elements adding
   ArrayList <String> array = new ArrayList<String>();

   //If file name is no.of passed as argument is 1
   if(args.length==1)
   {
   try
   {
       //Create file object
       freader = new File(args[0]);

       //Reading from file
       filescanner = new Scanner(freader);

       //Reading until end of file
   while(filescanner.hasNext())
   {
       //Reading each word and to Array List
       array.add(filescanner.next());
   }
   }
   //If file IOException is thrown
      catch(IOException ie)
   {
   System.out.println(ie);
   }String[] newArray = new String[array.size()];

   //Convert Array list to ArraynewArray=array.toArray(newArray);

   System.out.println("List of strings from file Before Sorting : \n");

   //Print before sorting words
   for(int i=0;i<newArray.length;i++)
   System.out.print(newArray[i]+" ");

   //Call sorting method
   sortArray(newArray);
   System.out.println("\nList of strings from file After Sorting : \n");

   //Print after sorting words
   for(int i=0;i<newArray.length;i++)
   System.out.print(newArray[i]+" ");

   System.out.print("\n");
   }
   else
       //If file name is not passed as argument then show usage syntax
       System.out.println("Usage syntax: SoftFile <Words.txt>");}
   }
   }