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Here myenv is an environment file (with file extension .env).<br />
This file may contain environment settings like classpath of server, your code base path, java home etc etc.<br />
<br />
This works only on few operating systems.
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Here myenv is an environment file (with file extension .env).
This file may contain environment settings like classpath of server, your code base path, java home etc etc.

This works only on few operating systems.

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which os does it work on. I am working on Windows, and there is no such file in the package.
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which os does it work on. I am working on Windows, and there is no such file in the package.

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Thank you so much. I will try it out. 
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what does it mean when an ant build.xml has this property in it?<br />
&lt;property environment=&quot;myenv&quot; /&gt;<br />
<br />
is myenv the users OS or shell environment? such as path setting in Windows?
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what does it mean when an ant build.xml has this property in it?
<property environment="myenv" />

is myenv the users OS or shell environment? such as path setting in Windows?

&lt;property environment=&quot;myenv&quot; /&gt;

Java is a platform-independent, object-oriented programming language and run-time environment, designed to have as few implementation dependencies as possible such that developers can write one set of code across all platforms using libraries. Most devices will not run Java natively, and require a run-time component to be installed in order to execute a Java program.

&lt;property environment=&quot;myenv&quot; /&gt;

<property environment="myenv" />