基础概念 在oracle中，any()表示括号内任何一个条件，只要有一个满足即可；而all()表示所有的条件都满足才可以。
I was sure for a long time that the answer is yes. But after I\'ve read this article: http://javablog.co.uk/2007/08/09/how-midlet-signing-is-killing-j2me/
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