title: unable to install common codec jar file
body: <p>I have downloaded <code>common.codec</code> binary jar file. Now I want to use the class <code>org.apache.commons.codec.binary.Base64</code>. But this folder contains four jar files namely <code>common.codec-1.7.jar</code>,<code>commons-codec-1.7-javadoc.jar</code>, <code>commons-codec-1.7-sources</code>,<code>commons-codec-1.7-tests</code>,<code>commons-codec-1a.7-test-sources</code>. Now which path should I mention in class path? And I tried with all the jar file paths and imported in my program but failed. Please tell me where to place this downloaded jar file and how to use it in my code.</p>