Examples of java.io.RandomAccessFile.seek()

java.io.RandomAccessFile.seek()
Seeks to the position pos in this RandomAccessFile. All read/write/skip methods sent will be relative to pos. @param pos the desired file pointer position @throws IOException If the stream is already closed or another IOException occurs.

              RandomAccessFile write = new RandomAccessFile(tmpFile, "rw");


              String versionString = Integer.toString(version1.getMajor()) + '.' + (version1.getMinor() / 10) + (version1.getMinor() % 10)
                  + '.' + version1.getSubMinor();


              write.seek(write.length());


              write.writeBytes("[plugin:" + pluginName + "]\n");
              write.writeBytes("name_en=" + pluginName + "\n");
              write.writeBytes("filename=" + jarFile.getName() + "\n");
              write.writeBytes("version=" + versionString + "\n");

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        }


        // create output stream
        final RandomAccessFile raf = new RandomAccessFile(file, "rw");
        raf.setLength(offset);
        raf.seek(offset);


        // The IBM jre needs to have both the stream and the random access file
        // objects closed to actually close the file
        return new FileOutputStream(raf.getFD()) {
            @Override

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            throw new IOException("No read permission : " + file.getName());
        }


        // move to the appropriate offset and create input stream
        final RandomAccessFile raf = new RandomAccessFile(file, "r");
        raf.seek(offset);


        // The IBM jre needs to have both the stream and the random access file
        // objects closed to actually close the file
        return new FileInputStream(raf.getFD()) {
            @Override

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                          long[] chunk = chunks.remove((int)(Math.random()*chunks.size()));
                          
                          final long  position   = chunk[0];
                          final int  size    = (int)chunk[1];
                          
                          raf.seek( position );
                          
                          byte[] buffer = new byte[ size ];
                          
                          raf.read( buffer );

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            boolean head, boolean tail, long start, int lines,
            boolean quiet) throws IOException {
        RandomAccessFile file = new RandomAccessFile(fileName, "r");
        long length = file.length();
        if (head) {
            file.seek(start);
            list(start, "Head", readLines(file, lines));
        }
        if (find != null) {
            file.seek(start);
            long pos = find(file, find.getBytes(), quiet);

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        if (head) {
            file.seek(start);
            list(start, "Head", readLines(file, lines));
        }
        if (find != null) {
            file.seek(start);
            long pos = find(file, find.getBytes(), quiet);
            if (pos >= 0) {
                file.seek(pos);
                list(pos, "Found " + find, readLines(file, lines));
            }

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        }
        if (find != null) {
            file.seek(start);
            long pos = find(file, find.getBytes(), quiet);
            if (pos >= 0) {
                file.seek(pos);
                list(pos, "Found " + find, readLines(file, lines));
            }
        }
        if (tail) {
            long pos = length - 100L * lines;

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        }
        if (tail) {
            long pos = length - 100L * lines;
            ArrayList<String> list = null;
            while (pos > 0) {
                file.seek(pos);
                list = readLines(file, Integer.MAX_VALUE);
                if (list.size() > lines) {
                    break;
                }
                pos -= 100L * lines;

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            response.setHeader("Accept-Ranges", "bytes");
            response.setHeader("Content-Length", Long.toString(rangeFinish - rangeStart + 1));
            response.setHeader("Content-Range", "bytes " + rangeStart + "-" + rangeFinish + "/" + fileSize);


            // seek to the requested offset
            raf.seek(rangeStart);


            // send the file
            byte[] buffer = new byte[4096];


            long len;

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                case 0: {
                    pos = (int) Math.min(pos, ra.length());
                    trace("seek " + pos);
                    buff.append("seek " + pos + "\n");
                    f.seek(pos);
                    ra.seek(pos);
                    break;
                }
                case 1: {
                    byte[] buffer = new byte[random.nextInt(1000)];
                    random.nextBytes(buffer);

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