kongkong的专栏

创建SelectorSelector selector = Selector.open();selector.select()public int select() throws IOException { return this.select(0L);}

ServerSocketChannelImplServerSocketChannel.open()ServerSocketChannel channel = ServerSocketChannel.open();public static ServerSocketChannel open() throws IOException { return SelectorProvider.provider().openServerSocketChannel();}SelectorProvid

ByteBuffer服务端接收不到OP_READ事件ByteBuffer byteBuffer = ByteBuffer.allocate(length);...............................sc.write(byteBuffer);通过allocate创建的ByteBuffer，需要调用下filp()方法，不调用，Server端就监听不到本次write的OP_READ事件ByteBuffer byteBuffer = ByteBuffer.wrap..

MSB的意思是：全称为Most Significant Bit，在二进制数中属于最高有效位，MSB是最高加权位，与十进制数字中最左边的一位类似LSB的意思是：全称为Least Significant Bit，在二进制数中意为最低有效位，一般来说，MSB位于二进制数的最左侧，LSB位于二进制数的最右侧以数字0x01020304在两种不同字节序CPU中的存储顺序如下所示：Big Endian低地址...

client向server发送questionId，server随机得到1个答案，然后把questionId和答案发送给clientAnswerServerpublic class AnswerServer { private static AtomicLong atomicLong = new AtomicLong(); public static final String[] answers = {"A","B","C","D"}; public stat..

public static void main(String[] args) { char[] array = new char[]{'a','b','c','d','e'}; CharBuffer buffer = CharBuffer.wrap(array); // 5 5 System.out.println("A capacity="+buffer.capacity()+" limit="+buffer.limit());...

客户端终止后，服务端一直循环报java.io.IOException: 远程主机强迫关闭了一个现有的连接。原始代码private void read(SocketChannel channel,SelectionKey key) throws Exception { ByteBuffer buffer = ByteBuffer.allocate(1024); //创建...

0<= mark <= position <= limit <= capacitylimit取值从0开始，capacity取值从1开始fliplimit = position;position = 0;mark = -1;rewindposition = 0;mark = -1;clearpositi...