665 

   666     // Remove all UL log messages from a JVM's STDOUT (such as those printed by -Xlog:cds)

   667     static Pattern logPattern = Pattern.compile("^\\[[0-9. ]*s\\].*");

   668     public static String filterOutLogs(String stdout) {

   669         StringBuilder sb = new StringBuilder();

   670         String prefix = "";

   671         for (String line : stdout.split("\n")) {

   672             if (logPattern.matcher(line).matches()) {

   673                 continue;

   674             }

   675             sb.append(prefix);

   676             sb.append(line);

   677             prefix = "\n";

   678         }

   679         if (stdout.endsWith("\n")) {

   680             // String.split("A\n") returns {"A"}, not {"A", ""}.

   681             sb.append("\n");

   682         }

   683         return sb.toString();

   684     }