This document provides a JavaFX GUI solution to open, display, edit, and save the contents of a .txt file. The solution creates a JFrame with a JEditorPane to display the file contents. It adds buttons to load the file, save edits back to the file, and clear the editor. Methods are included to load the file contents into the editor pane using a FileReader and to save the edited contents back to the file using a FileWriter.

1. in java(netbeans) create a javaFX GUI that can open and display the contents of a .txt file. and
make it so the user can edit the contents of the .txt file and save the contents back to the same
file.
Solution
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import javax.swing.AbstractAction;
import javax.swing.Action;
import javax.swing.JButton;
import javax.swing.JEditorPane;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.text.JTextComponent;
import javax.swing.text.html.HTMLEditorKit;
public class WeightedGraph {
public static void main(String args[]) {
final String inputFilePath = "C:Usersskumar41DesktopMyFile.txt"; //Replace yout
text file here
JFrame jFrame = new JFrame("Load ,Edit and Save file");
Container content = jFrame.getContentPane();
final JEditorPane edPane = new JEditorPane();
JScrollPane sPne = new JScrollPane(edPane);
content.add(sPne, BorderLayout.CENTER);
edPane.setEditorKit(new HTMLEditorKit());
JPanel jPanel = new JPanel();
Action Load = new AbstractAction() {
@Override
public void actionPerformed(ActionEvent event) {
try {

2. load(edPane, inputFilePath);
} catch (Exception e1) {
e1.printStackTrace();
}
}
};
Load.putValue(Action.NAME, "Load");
JButton loadButton = new JButton(Load);
jPanel.add(loadButton);
Action absActionSave = new AbstractAction() {
@Override
public void actionPerformed(ActionEvent event) {
try {
save(edPane, inputFilePath);
} catch (Exception e1) {
e1.printStackTrace();
}
}
};
absActionSave.putValue(Action.NAME, "Save");
JButton jButton = new JButton(absActionSave);
jPanel.add(jButton);
Action absActionClear = new AbstractAction() {
@Override
public void actionPerformed(ActionEvent event) {
edPane.setText("");
}
};
absActionClear.putValue(Action.NAME, "Clear");
JButton clearButton = new JButton(absActionClear);
jPanel.add(clearButton);
content.add(jPanel, BorderLayout.SOUTH);
jFrame.setSize(800, 600);
jFrame.setVisible(true);
}
public static void save(JTextComponent text, String inputFile) throws Exception {
FileWriter writer = null;
writer = new FileWriter(inputFile);
text.write(writer);
writer.close();
}
public static void load(JTextComponent text, String inputFile) throws Exception {
FileReader inputReader = null;
inputReader = new FileReader(inputFile);
text.read(inputReader, inputFile);
inputReader.close();

3. }
}