[英]order of javac classpath affecting whether classes can be found
I have a jar file, MyClasses.jar
, that contains a class MyReader
. 我有一个jar文件
MyClasses.jar
,其中包含一个类MyReader
。 I have a client class BuildReader
which uses it: 我有一个使用它的客户端类
BuildReader
:
// BuildReader.java
MyReader reader = new MyReader();
BuildReader.java
is in the current working directory for this example (and is the only file present). BuildReader.java
在此示例中位于当前工作目录中(并且是唯一的文件)。 If I compile with: 如果我编译:
javac -cp .:/path/to/MyClasses.jar BuildReader.java
Then I get an error that javac can't find the class MyReader
. 然后我得到一个错误,javac找不到类
MyReader
。
BuildReader.java:24: error: cannot find symbol
MyReader file = new MyReader();
^
symbol: class MyReader
location: class BuildReader
However, if I compile instead with: 但是,如果我用以下命令编译:
javac -cp /path/to/MyClasses.jar:. BuildReader.java
it compiles just fine. 它编译就好了。 Everything I've looked at online suggest that the only thing that could be a problem is that perhaps there are other versions of
MyReader
about; 我在网上看到的所有内容都表明,唯一可能出现问题的地方可能是
MyReader
其他版本。 there aren't. 没有。 Can anyone help me to understand why the order of the javac classpath is causing compiler errors?
谁能帮助我了解为什么javac类路径的顺序导致编译器错误? I am not the creator of
MyClasses.jar
, if that's relevant. 如果相关,我不是
MyClasses.jar
的创建者。
您没有说,但是我敢打赌您正在使用Windows,其中的类路径分隔符为';',而不是':'。
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