FileChannel: position(long newPosition) : FileChannel « java.nio.channels « Java by API






  1. Java by API
  2. java.nio.channels
  3. FileChannel

FileChannel: position(long newPosition)

 

import java.io.RandomAccessFile;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;

public class Main {
  private static final int BSIZE = 1024;

  public static void main(String[] args) throws Exception {
    FileChannel fc = new RandomAccessFile("data.txt", "rw").getChannel();
    fc.position(fc.size());
    fc.write(ByteBuffer.wrap("Some more".getBytes()));
    fc.close();

  }
}








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4.FileChannel: lock(long position, long size, boolean shared)
5.FileChannel: map(MapMode mode, long position, long size)
6.FileChannel: position()
7.FileChannel: read(ByteBuffer dst)
8.FileChannel: size()
9.FileChannel: transferFrom(ReadableByteChannel src, long position, long count)
10.FileChannel: transferTo(long position, long count, WritableByteChannel target)
11.FileChannel: tryLock()
12.FileChannel: write(MappedByteBuffer buffer)
13.FileChannel: write(ByteBuffer buffer)