public static String getLogDirectory() {
        // SLF4J doesn't provide a hook into the logging implementation. We'll have to do this 'direct', bypassing slf4j.
        final StringBuilder sb = new StringBuilder();
        sb.append(JiveGlobals.getHomePath());
        if (!sb.substring(sb.length()-1).startsWith(File.separator)) {
            sb.append(File.separator);
        }
        sb.append("logs");
        sb.append(File.separator);
        return sb.toString();
    }
Returns the directory that log files exist in. The directory name will
have a File.separator as the last character in the string.

@return the directory that log files exist in.
xmppserver/src/main/java/org/jivesoftware/util/Log.java