src/main/java/org/codehaus/plexus/archiver/zip/AbstractZipUnArchiver.java
public void setEncoding( String encoding )
    {
        if ( NATIVE_ENCODING.equals( encoding ) )
        {
            encoding = null;
        }
        this.encoding = encoding;
    }
public void setEncoding( String encoding )
    {
        if ( NATIVE_ENCODING.equals( encoding ) )
        {
            encoding = null;
        }
        this.encoding = encoding;
    }
Sets the encoding to assume for file names and comments.
<p/>
<p>
Set to <code>native-encoding</code> if you want your platform's native encoding, defaults to UTF8.
</p>