import java.io.*;
import java.nio.*;
import java.io.FileInputStream;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;

public class ByteBufferCapacity {
	public static final int size = 1024;

	public static void main(String[] args) throws Exception {

		FileInputStream finStream = new FileInputStream(args[0]);
		System.out.println("Given file name :" + args[0]);
		FileChannel fchannel = finStream.getChannel();
		ByteBuffer bytebuf = ByteBuffer.allocate(size);
		fchannel.read(bytebuf);
		System.out.println("Capacity of ByteBuffer : " + bytebuf.capacity());
	}
}