Topic: JAVA小问题 (Enumeration .elements() .hasMoreElements()) |
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1.JAVA小问题 (Enumeration .elements() .hasMoreElements()) | Copy to clipboard |
Posted by: jjfzzy Posted on: 2005-05-19 13:33 请尽量用准确的文字描述作为标题 Your next post without a proper Subject will be removed. http://java.sun.com/j2se/1.4.2/docs/api/java/util/Enumeration.html public void synchronizeCalendarService(){ Enumeration enum = calendarService.elements(); while(enum.hasMoreElements()){ ((CalendarService)enum.nextElement()).synchronize(); } } 这个代码中的 Enumeration是什么类型?.elements()和enum.hasMoreElements()上什么意思啊?哪位大哥告诉下谢谢 |
2.Re:JAVA小问题 [Re: jjfzzy] | Copy to clipboard |
Posted by: leon0122 Posted on: 2005-05-19 16:41 Enumeration 是个集合类 .elements()是取得该集合对象的下一个元素, enum.hasMoreElements()是判断是否还有下一个元素 |
3.Re:JAVA小问题 (Enumeration .elements() .hasMoreElements()) [Re: jjfzzy] | Copy to clipboard |
Posted by: jjfzzy Posted on: 2005-05-20 13:58 谢谢 |
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