title: How to read an Environment variable from Java code
body: <p>I have a properties file that needs to be loaded into a java program. Part of the path is defined by the system environment variable <code>JAVA_TOP</code>. When i give the full path it recognizes the file. Otherwise it won't. I tried giving file path as:</p>
  
  <pre><code>&lt;JAVA_TOP&gt;/abc.... 
  $JAVA_TOP/abc...
  JAVA_TOP/abc
  </code></pre>
  
  <p>None of them seem to work. Please let me know how to read the environment variable <code>JAVA_TOP</code> from the java application.</p>