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java Programming Glossary: randomaccessfileBest Way to Write Bytes in the Middle of a File in Java http://stackoverflow.com/questions/181408/best-way-to-write-bytes-in-the-middle-of-a-file-in-java Writing in the middle of a file is as simple as using a RandomAccessFile in Java. RandomAccessFile despite its name is more like an InputStream.. a file is as simple as using a RandomAccessFile in Java. RandomAccessFile despite its name is more like an InputStream and OutputStream.. file i o. A small example public static void aMethod RandomAccessFile f new RandomAccessFile new File whereDidIPutTHatFile rw long..
Create file with given size in Java http://stackoverflow.com/questions/245251/create-file-with-given-size-in-java p java file share improve this question Create a new RandomAccessFile and call the setLength method specifying the desired file length... class Test public static void main String args try RandomAccessFile f new RandomAccessFile t rw f.setLength 1024 1024 1024 catch.. static void main String args try RandomAccessFile f new RandomAccessFile t rw f.setLength 1024 1024 1024 catch Exception e System.err.println..
Create thumbnail image for PDF in Java http://stackoverflow.com/questions/2844961/create-thumbnail-image-for-pdf-in-java taken from their example page File file new File test.pdf RandomAccessFile raf new RandomAccessFile file r FileChannel channel raf.getChannel.. page File file new File test.pdf RandomAccessFile raf new RandomAccessFile file r FileChannel channel raf.getChannel ByteBuffer buf channel.map..
how to resume an interrupted download - part 2 http://stackoverflow.com/questions/3428102/how-to-resume-an-interrupted-download-part-2 new BufferedInputStream url.openStream 8192 outFile new RandomAccessFile strUrl 1 rw if downloaded 0 outFile.seek downloaded byte data..
I don't understand file locking http://stackoverflow.com/questions/4025721/i-dont-understand-file-locking import java.io.IOException import java.io.RandomAccessFile import java.nio.channels.FileChannel import java.nio.channels.FileLock.. file.getAbsolutePath FileChannel channel new RandomAccessFile file rw .getChannel try Get an exclusive lock on the whole.. This is why the write fails. The first open your new RandomAccessFile and lock has the file locked. The open to write the string succeeds..
Java : Read last n lines of a HUGE file http://stackoverflow.com/questions/4121678/java-read-last-n-lines-of-a-huge-file large files share improve this question If you use a RandomAccessFile you can use length and seek to get to a specific point near..
Export PDF pages to a series of images in Java http://stackoverflow.com/questions/550129/export-pdf-pages-to-a-series-of-images-in-java load a pdf from a byte buffer File file new File test.pdf RandomAccessFile raf new RandomAccessFile file r FileChannel channel raf.getChannel.. File file new File test.pdf RandomAccessFile raf new RandomAccessFile file r FileChannel channel raf.getChannel ByteBuffer buf channel.map..
Buffered RandomAccessFile java http://stackoverflow.com/questions/5614206/buffered-randomaccessfile-java RandomAccessFile java RandomAccessFile is quite slow for random access to a.. RandomAccessFile java RandomAccessFile is quite slow for random access to a file. You often read about..
Read a file line by line in reverse order http://stackoverflow.com/questions/6011345/read-a-file-line-by-line-in-reverse-order Create a subclass of InputStream that wraps an instance of RandomAccessFile in order to read the bytes of a file in reverse order public.. class ReverseFileInputStream extends InputStream private RandomAccessFile in private byte buffer The index of the next byte to read. private.. public ReverseFileInputStream File file this.in new RandomAccessFile File r this.buffer new byte 4096 this.bufferIndex this.buffer.length..
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