为什么要配置classpath变量？ 配置classpath变量，才能使得java解释器知道到哪里去找标准类库，这些标准类库是别人已经写好了的，我们只管使用。比如我们常用到java.lang包中的类，在配置classpath变量后被设为默认导入，所以在写程序时就不用import这个包了。

归纳一些网上取JAVA路径的方法： 注明：如果从ANT启动程序，this.getClass().getResource("")取出来的比较怪，直接用JAVA命令行调试就可成功。 归纳一些网上取JAVA路径的方法： 注明：如果从ANT启动程序，this.getClass().getResource("")取出来的比较怪，直接用JAVA命令行调试就 ...

最后，如果当前的classpath中能够找到指定的类，则程序显示包含该类的类文件所在位置的绝对路径名（21-24行）。作为一种调试辅助手段，如果当前classpath中不能找到指定的类，则程序获取java.class.path系统属性并显示当前的classpath（24-28行）。 很容易想象，在 ...

In a previous blog posting, I listed some “everyday problems” Java developers will often face and included some ideas and links related to addressing these issues. One of the focal points of that post ...

Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with content, and download exclusive resources. Kenneth Harris, a NASA veteran who worked on ...

A monthly overview of things you need to know as an architect or aspiring architect. Unlock the full InfoQ experience by logging in! Stay updated with your favorite authors and topics, engage with ...

In a previous Java 101 tutorial, you learned how to better organize your code by declaring reference types (also known as classes and interfaces) as members of other reference types and blocks. I also ...

The Eclipse Foundation has just announced the release of a new version of the Eclipse Buildship project, which integrates the Gradle build tool with Eclipse. Version 2.2 supports Java 9 and introduces ...