public static String renderSequence(PingRequest request, PingSequence sequence) { Objects.requireNonNull(request); Objects.requireNonNull(sequence); final StringBuilder builder = new StringBuilder(); if (sequence.isTimeout()) { builder.append(String.format("Request timeout for icmp_seq %s", sequence.getSequenceNumber())); } if (sequence.isError()) { builder.append( String.format("Request error for icmp_seq %s: %s", sequence.getSequenceNumber(), sequence.getError().getMessage())); } if (sequence.isSuccess()) { builder.append( String.format("%s bytes from %s: icmp_seq=%d time=%.3f ms", request.getPacketSize(), request.getInetAddress(), sequence.getSequenceNumber(), sequence.getResponse().getRtt())); } return builder.toString(); }