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工作学习 / IT杂谈 / CALL BACKThe veterans know callback. CallBack is a pattern extensively used in Java technology. Can anybody cite some examples here?
-jabber(jabber);
2000-11-23
{127}
(#15575@0)
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Can anybody response?
-jabber(jabber);
2000-11-24
(#15703@0)
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Simply to say ...Simply to say, a Java class have a native method and a "non-native" method, the native method makes a call (i.e. call back) to the "non-native" method. Just like the "callback" in Microsoft Windows, a WndPro (Windows procedure) calls Windows, then Windows makes a call to a callback function.
-old(HH);
2000-11-25
{299}
(#15726@0)
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What is callback?You and your sister and/or brother stay in a room where there is a telephone, you makes a call to one of your friend elsewhere, then the friend of yours makes a call back to you, your sister or your brother. This is called "callback".
-old(HH);
2000-11-25
{238}
(#15728@0)
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JAVA偶不懂,一般电讯网络中的回拨是...主叫方给被叫方一个特定的CALL,包含handshake或authorization,被叫方判别对方权限正确后,自动切断本次连接,返还给主叫方一个CALL,继而登录网络,建立稳定的连接.
酱紫的一个过程叫CALLBACK,显然具有一定的安全机制,因此在建设远程网络时常常用到.
另外,由于电讯中计费主要是针对主叫方设计的,所以,CALLBACK还能用于转移话费支出.呵呵...中国电信是严格禁止海外对大陆建立CALLBACK的,嘻嘻,没钱赚啦!
-aabb(爱吃水草的鱼);
2000-11-25
{370}
(#15771@0)
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The "Callback" procedure you described is exactly a "Callback" procedure in telecommunication.The "Callback" procedure you described is exactly, as you said, a "Callback" procedure in telecommunication. The "Callback" in Remote Access Service in Windows NT uses the same procedure as you described.
What I said in "What is callback" above is just a simple personified analogy of "callback" procedure in Java programming. And I do not think it is an precise description.
-old(HH);
2000-11-26
{390}
(#15836@0)
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Thank you all for response. Before this, I really did not know there is "callback" in telecommunication
-jabber(jabber);
2000-11-26
{1740}
(#15846@0)