我不理解为什么在少数进口包中,“java”后面加上“x”。 原因何在? Can t it is only java.swing.* 同其他人一样:java.io.*?
Swing最初是延伸至Java,这是一个可单独下载的图书馆。 它成为 Java1.2的“主要”法律的一部分。 单设一个图书馆声称一套 j瓦* 包裹是奇怪的,因此目前的情况。 还有一些类似的延伸。
Wikipedia article on Swing,对其历史有比更多的信息。
From Core Java 2:
alt text http://bks5.books.google.fr/books?id=W6bomXWB-TYC&printsec=frontcover&img=1&zoom=5&edge=curl&sig=ACfU3U3IeRSfENUVokGf-d9GUZZBU-tYMQ
姓名<代码>javax表示 Java延包,不是核心包裹。 滚动班实际上延伸到 Java1.1。 由于上课不属于核心等级,因此有可能将上课装成 Java1.1-相容的浏览器。 在 Java2平台上,Swaing一揽子计划不再是延伸,而是核心等级的一部分。 任何与Java 2相容的Java方案都必须提供Swaing课程。 然而,与Java1.1号法典相容的javax名称仍然存在。 (实际上,Swaing包装开始作为com.sun.java.swing,然后短暂移至java.awt.swing。 早期 Java 2个贝塔版本,随后在 Java 2个贝塔版本中回过com.sun.java.swing,在 Java 2个贝塔版本中,在 Java方案家的抗议灯后,在javax.swing上找到了最后的休息地点。
<>x是因为它们是延伸。 在java第1.1版中,没有wing,在添加后,他们决定将其命名为:javax
有一些类似的包裹。
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