/* Test to ensure files >= 2^31 bytes are supported. */ import java.io.*; public class LargeFile { public static void main(String[] args) throws IOException { File file = new File("LargeFile.tmp"); try { RandomAccessFile rfile = new RandomAccessFile(file, "rw"); long pos = (long) Math.pow(2, 31); rfile.seek(pos); rfile.write('O'); rfile.write('K'); rfile.close(); // Re-open, read byte back using FileInputStream and clean up. FileInputStream fis = new FileInputStream(file); fis.skip(pos); System.out.print((char) fis.read()); System.out.println((char) fis.read()); fis.close(); } finally { if (file.exists()) file.delete(); } } }