JavaFX Textbereich: Hinzufügen von "-" am Ende jeder Zeile

Question

Dies ist meine erste Post.

Ich benutze NetBeans IDE und ich benutze Scene Builder für mein JavaFX Projekt. Ich habe einen Textbereich mit den Variablen „Definitionen“ Ich habe auch eine Schaltfläche mit der Aktion

void addAction(ActionEvent event) { 
} 

ich im Textbereich zu machen Linie versuchen am Ende mit „-“.

es sichtbar zu machen: input:

happy 
sad 
good 
bad 

output:

happy - 
sad - 
good - 
bad - 

Ich habe dies für Loop:

for (int i = 0 ; definitions.getText().split("\\n"); i++){ 
     String previous = definitions.getText(); 
     definitions.setText(previous + " - "); 
     } 

aber die Ausgabe ist:

happy 
sad 
good 
bad - - - - 

Könnte mir jemand helfen? Vielen Dank an alle. MineRockers

Hier ist der vollständige Code für den Fall, Sie Jungs brauchen es:

package vocabulary.javafx; 

import java.net.URL; 
import java.awt.Desktop; 
import java.io.BufferedWriter; 
import java.io.FileWriter; 
import java.io.IOException; 
import java.net.URI; 
import java.net.URISyntaxException; 
import java.util.ResourceBundle; 
import javafx.event.ActionEvent; 
import javafx.fxml.FXML; 
import javafx.fxml.Initializable; 
import javafx.scene.control.*; 

public class FXMLDocumentController implements Initializable { 

    //Declaration... 
    private boolean Email; 
    private boolean Save; 
    private String Word; 

    @FXML 
    private Button add; 

    @FXML 
    private TextArea sentences; 

    @FXML 
    private Button searchS; 

    @FXML 
    private TextField helpD; 

    @FXML 
    private Button finish; 

    @FXML 
    private Label label; 

    @FXML 
    private TextField helpS; 

    @FXML 
    private TextArea definitions; 

    @FXML 
    private Button searchD; 

    @FXML 
    void addAction(ActionEvent event) { 
     String previous = definitions.getText(); 
     String[] linecountS = definitions.getText().split("\n"); 
     for() 
     int lineCount = Integer.parseInt(linecountS); 
     //for (int i = 0 ; definitions.getText().split("\\n"); i++){ 
     // String previous = definitions.getText(); 
     // definitions.setText(previous + "-"); 
     //} 
    } 

    @FXML 
    void helpDAction(ActionEvent event) { 
     //Enter Key Pressed 
     Word = helpD.getText(); 
     if (Desktop.isDesktopSupported()) { 
      try { 
       Desktop.getDesktop().browse(new URI("http://www.dictionary.com/browse/" + Word + "?s=t")); 
      } catch (URISyntaxException | IOException ex) { 
      } 
     } 
    } 

    @FXML 
    void helpSAction(ActionEvent event) { 
     //Enter Key Pressed 
     Word = helpS.getText(); 
     if (Desktop.isDesktopSupported()) { 
      try { 
       Desktop.getDesktop().browse(new URI("http://sentence.yourdictionary.com/" + Word)); 
      } catch (URISyntaxException | IOException ex) { 
      } 
     } 
    } 

    @FXML 
    void searchDAction(ActionEvent event) { 
     //Button Clicked 
     Word = helpD.getText(); 
     if (Desktop.isDesktopSupported()) { 
      try { 
       Desktop.getDesktop().browse(new URI("http://www.dictionary.com/browse/" + Word + "?s=t")); 
      } catch (URISyntaxException | IOException ex) { 
      } 
     } 
    } 

    @FXML 
    void searchSAction(ActionEvent event) { 
     //Button Clicked 
     Word = helpS.getText(); 
     if (Desktop.isDesktopSupported()) { 
      try { 
       Desktop.getDesktop().browse(new URI("http://sentence.yourdictionary.com/" + Word)); 
      } catch (URISyntaxException | IOException ex) { 
      } 
     } 
    } 

    @FXML 
    void finishAction(ActionEvent event) { 
     String Content1 = definitions.getText(); 
     String Content2 = sentences.getText(); 
     String Finalized = "Auto-generated message by Vocabulary 2.0 by MineRocker\n\nDefinitions:\n" + Content1 + " \n\n\nSentences:\n" + Content2; 

     if (Desktop.isDesktopSupported()) { 
      try { 
       Desktop.getDesktop().browse(new URI("gmail.com")); 
      } catch (URISyntaxException | IOException ex) { 
      } 

      FileWriter fileWriter; 
      try { 
       fileWriter = new FileWriter("AFile.txt"); 
       try (BufferedWriter bufferedWriter = new BufferedWriter(fileWriter)) { 
        bufferedWriter.write(Finalized); 
       } 

      } catch (IOException ex) { 
      } 
     } 
    } 

    @Override 
    public void initialize(URL url, ResourceBundle rb) { 

    } 

} 

Answer 1

Dieser Code add "-" nach jeder Zeile:

String str = definitions.getText().replaceAll("\n", " -\n"); 
str = str + " -";// add "-" to last line 
definitions.setText(str);