使用javac/java手动编译并运行多个软件包 [英] Manually compile and run multiple packages using javac/java

问题描述

假设我具有以下文件夹结构:

Let's say I have the following folder structure:

\ src \ com \ proj \ pp1 \ stuff，其中com.proj.pp1和com.proj.pp1.stuff是我拥有的两个软件包:

\src\com\proj\pp1\stuff where com.proj.pp1 and com.proj.pp1.stuff are the two packages I have:

    -src
      -com
        -proj
          -pp1
             tester.java
             -stuff
                some other .java's

成为tester.java中的主要功能，并使用/stuff中声明的类.

Being the main function in tester.java, and using the classes declared in /stuff.

在tester.java中，我以这种方式声明了导入:

In tester.java I declare the imports that way:

package com.proj.pp1;    
import com.proj.pp1.*;

在根据东西声明的所有文件中:

And in all the files declared under stuff:

package com.proj.pp1.stuff;

没有任何进口.

在/pp1文件夹中，我能够执行.class的以下操作:

I'm able to get the .class's doing the following, being in /pp1 folder:

javac tester.java stuff/*.java

但是当我尝试运行测试器类时:

But when I try to run the tester class:

java tester

它给了我错误输出: 找不到或加载主类测试器 和同样的事情，如果我尝试java com.proj.pp1.tester

It gives me the error output: Could not find or load main class tester and the very same thing if I try java com.proj.pp1.tester

您认为可能是什么实际问题?

What do you think could be the actual problem?

推荐答案

javac将文件作为参数，因此应该是

javac takes files as arguments, so it should be

cd src
javac com/proj/pp1/tester.java

那应该编译tester.java和所有相关的类.

That should compile tester.java and all related classes.

和java以主要的 class 作为参数，因此要运行它，请执行以下操作:

and java takes the main class as argument, so to run it you do:

java com.proj.pp1.tester

(调用java com.proj.pp1.tester时，请确保com/proj/pp1/tester.class存在.)

(When you invoke java com.proj.pp1.tester make sure com/proj/pp1/tester.class exists.)

您可能希望阅读javac的-d选项，以避免将类放在源目录中.

You might want to read up on -d option for javac to avoid putting your classes in the source directory.

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