Java tutorial
import java.io.BufferedReader; import java.io.FileInputStream; import java.io.InputStreamReader; import javax.swing.JLabel; import javax.swing.ProgressMonitorInputStream; public class MainClass { public static void main(String[] a) throws Exception { String fileName = "BigFile.txt"; FileInputStream fis = new FileInputStream(fileName); JLabel filenameLabel = new JLabel(fileName, JLabel.RIGHT); Object message[] = { "Reading:", filenameLabel }; ProgressMonitorInputStream pmis = new ProgressMonitorInputStream(null, message, fis); InputStreamReader isr = new InputStreamReader(pmis); BufferedReader br = new BufferedReader(isr); String line; while ((line = br.readLine()) != null) { System.out.println(line); } br.close(); } }