import java.nio.Buffer;

import java.nio.ByteBuffer;

public class BufferDemo{

public static void main(String[] args){

int capacity = 7;

if(args.length>0){

try{

capacity = Integer.parseInt(args[0]);

}catch(NumberFormatException nfe){

nfe.printStackTrace();

}

}

Buffer buffer = ByteBuffer.allocate(capacity);

System.out.println("Capacity: " + buffer.capacity());

System.out.println("Limit: " + buffer.limit());

System.out.println("Position: " + buffer.position());

System.out.println("Remaining: " + buffer.remaining());

System.out.println("Changing buffer limit to 5.");

buffer.limit(5);

System.out.println("Capacity: " + buffer.capacity());

System.out.println("Limit: " + buffer.limit());

System.out.println("Position: " + buffer.position());

System.out.println("Remaining: " + buffer.remaining());

System.out.println("Changing buffer position to 3.");

buffer.position(3);

System.out.println("Capacity: " + buffer.capacity());

System.out.println("Limit: " + buffer.limit());

System.out.println("Position: " + buffer.position());

System.out.println("Remaining: " + buffer.remaining());

System.out.println(buffer);

}

}