public class socketselector
public void init(string... args) throws ioexception
selector selector = selector.open();
serversocketchannel serversocketchannel = serversocketchannel.open();
serversocketchannel.configureblocking(false);
serversocketchannel.socket().bind(new inetsocketaddress(port));
system.out.println("1111");
serversocketchannel.register(selector, selectionkey.op_accept);
system.out.println("wille to cycle..");
while(true)
system.out.println(n);
iterator it = selector.selectedkeys().iterator();
while(it.hasnext())
if(selectionkey.isreadable())}}
}private bytebuffer buf = bytebuffer.allocate(1024);
protected void readdatafromchannel(selectionkey selectionkey) throws ioexception
buf.clear();
}if (count < 0)
}private void sayhello(socketchannel socketchannel) throws ioexception
private void registerchannel(selector selector,
socketchannel socketchannel, int opread) throws ioexception
socketchannel.configureblocking(false);
socketchannel.register(selector, opread);
system.out.println("註冊成功——讀"); }
}
public class clientsocketselector
public void init(string...args) throws ioexception
socketchannel socketchannel = socketchannel.open();
socketchannel.configureblocking(false);
socketchannel.connect(new inetsocketaddress("localhost", port));//不能用socketchannel.socket().connect();親身實踐證明！用了就不能正常通訊
socketchannel.register(selector, selectionkey.op_connect);
while(true)
iterator it = selector.selectedkeys().iterator();
while(it.hasnext())
if (key.isreadable()) }}
}private bytebuffer buf = bytebuffer.allocate(1024);
protected void readdatafromchannel(selectionkey key) throws unsupportedencodingexception, ioexception
int count = 0;
while((count = sc.read(buf)) > 0)
}}
原本以為只要一直讓通道處於就緒狀態就能不斷的接收資料（isreadable），測試後發現，一直處於被選擇的鍵中，不能夠接收到最新的資料。
只有將該鍵從已選擇的鍵中取消，才能重新獲得資料。
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