FAST file reading

Question

Hello,
i need to read large text files, but method i wrote appears to be very slow and cannot be used for larger files.
i have something like this:
BufferedReader br = new BufferedReader(new FileReader(path));
String line = "";
StringBuffer sb = new StringBuffer();
while( line = br.readline()   != null )
sb.append(line);
br.close();I am sure there is faster way to read. Thank you for help.

Answer 1

Here's the old JTextAreaPrintStream for those extra long lines...
import java.io.OutputStream;
import java.io.PrintStream;
import javax.swing.*;
public class JTextAreaPrintStream extends PrintStream {
    public JTextAreaPrintStream(JTextArea textArea){
        super(new JTextAreaOutputStream(textArea));
    private static class JTextAreaOutputStream extends OutputStream {
        private JTextArea textArea;
        private JTextAreaOutputStream(JTextArea textArea) {
            this.textArea = textArea;
        public void write(int i){
            textArea.append(new String(new char[] {(char) i}));
        public void write(byte[] b){
            textArea.append(new String(b));
        public void write(byte[] b, int offset, int len){
            textArea.append(new String(b, offset, len));
    public static void main(String[] args) {
        doDemo();
    static void doDemo() {
        JFrame f = new JFrame("JTextAreaPrintStreamDemo");
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        JTextArea display = new JTextArea();
        display.setEditable(false);
        JTextAreaPrintStream newOut = new JTextAreaPrintStream(display);
        System.setOut(newOut);
        f.add(new JScrollPane(display));
        f.setSize(300, 300);
        f.setVisible(true);
        System.out.println("How's this?");
        for (int i = 0; i < 5; System.out.println(i++ + 1));
}~