JAVA NIO , BUFFER , LIMIT and POSITION

import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;

public class FileNIO {

public static void main(String[] args) throws IOException {
try {
FileOutputStream fout = new FileOutputStream("nio.txt");

FileChannel fc = fout.getChannel();

ByteBuffer bb = ByteBuffer.allocate(10);

bb.clear();

for (int i = 0; i < 10; i++) {

System.out.println("space left in the buffer "+bb.limit());
System.out.println("next element where the data need to be put :"+bb.position());

bb.put((byte) 'A');

}

System.out.println("space left in the buffer "+bb.limit());
System.out.println("next element where the data need to be put :"+bb.position());


bb.flip();

fc.write(bb);

} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}

}

}

will print the following output

space left in the buffer 10

next element where the data need to be put :0

space left in the buffer 10

next element where the data need to be put :1

space left in the buffer 10

next element where the data need to be put :2

space left in the buffer 10

next element where the data need to be put :3

space left in the buffer 10

next element where the data need to be put :4

space left in the buffer 10

next element where the data need to be put :5

space left in the buffer 10

next element where the data need to be put :6

space left in the buffer 10

next element where the data need to be put :7

space left in the buffer 10

next element where the data need to be put :8

space left in the buffer 10

next element where the data need to be put :9

space left in the buffer 10

next element where the data need to be put :10