import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
public class ExplicitChannelWrite {
public static void main(String args[]) {
FileOutputStream fOut;
FileChannel fChan;
ByteBuffer mBuf;
try {
fOut = new FileOutputStream("test.txt");
fChan = fOut.getChannel();
mBuf = ByteBuffer.allocateDirect(26);
for (int i = 0; i < 26; i++)
mBuf.put((byte) ('A' + i));
mBuf.rewind();
fChan.write(mBuf);
fChan.close();
fOut.close();
} catch (IOException exc) {
System.out.println(exc);
System.exit(1);
}
}
}