@Override
public String format(List<JvmClassMetrics> metricsList, long startMillis, long stopMillis) {
String dataTitleFormat = "%-10s%10s%10s%n";
StringBuilder sb = new StringBuilder((metricsList.size() + 2) * (12 * 3 + 64));
sb.append("MyPerf4J JVM Class Metrics [").append(DateFormatUtils.format(startMillis)).append(", ").append(DateFormatUtils.format(stopMillis)).append("]").append(String.format("%n"));
sb.append(String.format(dataTitleFormat, "Total", "Loaded", "Unloaded"));
if (metricsList.isEmpty()) {
return sb.toString();
}
String dataFormat = "%-10d%10d%10d%n";
for (int i = 0; i < metricsList.size(); ++i) {
JvmClassMetrics metrics = metricsList.get(i);
sb.append(String.format(dataFormat,
metrics.getTotal(),
metrics.getLoaded(),
metrics.getUnloaded()));
}
return sb.toString();
}