Scrollable Text Component

Question

I need to make a scrollable text component which reads characters from an InputStream object. I have two questions.
Q1: My first attempt was to make a Text Area but I couldn't find any ways to easily make it scrollable. The method in the JTextComponent class that returns the scrollable object needs a Rectangle object in its paramaters. But I don't have a Rectangle object, I have a Text Area object. This gets me thinking that perhaps I should be using a different object than a Text Area. So, what class/object should I use from the API to make a scrollable text component?
Q2: I want this scrollable Text Component to read characters from an InputStream object. How can I do this easily?

Answer 1

* SaveReloadText.java
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import javax.swing.*;
public class SaveReloadText extends JFrame {
    public SaveReloadText() {
        initComponents();
    private void initComponents() {
        setTitle("Save-Reload JTextArea");
        toolbar = new JToolBar();
        saveButton = new JButton("Save");
        reloadButton = new JButton("Reload");
        reloadButton.setEnabled(false);
        textarea = new JTextArea();
        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
        saveButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent evt) {
                saveButtonActionPerformed(evt);
        toolbar.add(saveButton);
        reloadButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent evt) {
                reloadButtonActionPerformed(evt);
        toolbar.add(reloadButton);
        getContentPane().add(toolbar, BorderLayout.NORTH);
        textarea.setBackground(new Color(204, 204, 204));
        textarea.setText(
                "BLA BLA BLA\n" +
                "\n" +
                "bla bla bla bla bla bla bla bla blabla bla bla  bla bla bla, \n" +
                "bla bla bla bla bla bla bla bla blabla bla bla  bl, etc. \n" +
                "\n" +
                "Bla bla bla bla bla bla bla bla blabla bla bla  bla bla bla bla bla. \n" +
                "\n" +
                "Bla bla bla bla bla bla bla bla blabla bla bla  bla bla bla, \n" +
                "bla bla bla bla bla bla bla bla blabla bla bla  bla bla bla bla bla bla blabla. \n" +
                "Bla bla bla bla . \n" +
                "\n" +
                "bla bla bla bla bla bla,  bla bla blabla bla bla . \n" +
                "\n" +
                "bla bla bla bla bla bla bla bla blabla bla bla  bla bla bla bla bla  bla bla bla \n" +
                "bla bla bla, blahhhhhhhhhhh. "
        getContentPane().add(new JScrollPane(textarea), BorderLayout.CENTER);
        setSize(300,200);
        setLocationRelativeTo(null);
    private void saveButtonActionPerformed(final ActionEvent evt) {
        try{
            doSave();
        }catch(IOException ex){
            ex.printStackTrace();
            return;
        textarea.setText("");
        saveButton.setEnabled(false);
        reloadButton.setEnabled(true);
    private void reloadButtonActionPerformed(final ActionEvent evt) {
        try{
            doReload();
        }catch(IOException ex){
            ex.printStackTrace();
            return;
        saveButton.setEnabled(true);
        reloadButton.setEnabled(false);
    private void doSave() throws IOException{
        Writer writer = new BufferedWriter(new FileWriter(new File(FILE_NAME)));
        textarea.write(writer);
        writer.close();
    private void doReload() throws IOException{
        Reader reader = new BufferedReader(new FileReader(new File(FILE_NAME)));
        textarea.read(reader,null);
        reader.close();
    public static void main(final String args[]) {
        EventQueue.invokeLater(new Runnable() {
            public void run() {
                new SaveReloadText().setVisible(true);
    private final String FILE_NAME = "c:\\Masturbation_Technique.txt";
    private BufferedWriter writer;
    private BufferedReader reader;
    private JButton saveButton,reloadButton;
    private JTextArea textarea;
    private JToolBar toolbar;
}