//How to load text file into the JEditorPane?
//Could you write me a code please?

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.net.URL;

public class qwerty{
	public static void main(String[] args){
		JFrame mainFrame = new MyWindow();
		mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		mainFrame.show();
	}
}
class MyWindow extends JFrame{
	private JFileChooser chooser;
	public MyWindow(){
		setSize(400, 300);
		final JEditorPane editorPane = new JEditorPane();
		chooser = new JFileChooser();
		Container contentPane = getContentPane();
		JMenuBar menuBar = new JMenuBar();
		setJMenuBar(menuBar);

		JMenu fileMenu = new JMenu("file");
		menuBar.add(fileMenu);

		JMenuItem openItem = new JMenuItem("open");
		fileMenu.add(openItem);
		openItem.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent event){
				int r=chooser.showOpenDialog(null);
				if(r==JFileChooser.APPROVE_OPTION){
					String name = chooser.getSelectedFile().getPath();
					System.out.println("Question: how to load selected file\n" + name + "\ninto the editorPane?");                
					/* dont work
					URL h = qwerty.class.getResource(name);
					try {
						editorPane.setPage(h);
					} catch (IOException e) {
						e.printStackTrace();
					}*/
                		}
			}
		});
	contentPane.add(editorPane);
	}
}

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.net.URL;

public class qwerty{
	public static void main(String[] args){
		JFrame mainFrame = new MyWindow();
		mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		mainFrame.show();
	}
}
class MyWindow extends JFrame{
	private JFileChooser chooser;
	public MyWindow(){
		setSize(400, 300);
		final JEditorPane editorPane = new JEditorPane();
		chooser = new JFileChooser();
		Container contentPane = getContentPane();
		JMenuBar menuBar = new JMenuBar();
		setJMenuBar(menuBar);

		JMenu fileMenu = new JMenu("file");
		menuBar.add(fileMenu);

		JMenuItem openItem = new JMenuItem("open");
		fileMenu.add(openItem);
		openItem.addActionListener(new ActionListener(){
			public void actionPerformed(ActionEvent event){
				int r=chooser.showOpenDialog(null);
				if(r==JFileChooser.APPROVE_OPTION){
					String filePath = chooser.getSelectedFile().getPath();
					try {
						FileInputStream fr = new FileInputStream(filePath);
						InputStreamReader isr = new InputStreamReader(fr, "UTF-8");
						BufferedReader reader = new BufferedReader(isr);
						StringBuffer buffer = new StringBuffer();

						String line = null;
						while ((line = reader.readLine()) != null) {
							buffer.append(line);
						}

						reader.close();

						editorPane.setText(buffer.toString());
					} catch (IOException e) {
						e.printStackTrace();
					}
                		}
			}
		});
	contentPane.add(editorPane);
	}
}