《疯狂Java讲义》（三十三）---- NIO

package com.ivy.nio;

import java.nio.CharBuffer;

public class BufferDemo {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        CharBuffer buffer = CharBuffer.allocate(8);
        System.out.println("capacity:" + buffer.capacity());
        System.out.println("limit:" + buffer.limit());
        System.out.println("position:" + buffer.position());
        
        buffer.put("a");
        buffer.put("b");
        buffer.put("c");
        System.out.println("after adding three elements -------");
        System.out.println("position:" + buffer.position());
        buffer.flip();
        System.out.println("after flip -------");
        System.out.println("position:" + buffer.position());
        System.out.println("position(0):" + buffer.get());
        System.out.println("position:" + buffer.position());
        buffer.clear();
        System.out.println("after clear -------");
        System.out.println("limit:" + buffer.limit());
        System.out.println("position:" + buffer.position());
        System.out.println("position(2):" + buffer.get(2));
        System.out.println("position:" + buffer.position());
    }

}