import java.util.regex.Matcher;
import java.util.regex.Pattern;
public class Example {
public static void main(String[] args) {
final String regex = "^\\d{4}-\\d{2}-\\d{2} \\d{2}:\\d{2}:\\d{2} \\S+ \\(\\S+\\) - flush done sketch=\\{flushed=(\\d+) total=(\\d+) pruned=(\\d+)\\} num_org_metric=\\d+ since_ms=(\\d+)ms dt=[-+]?([0-9]*(\\.[0-9]*)?[a-z]+)+";
final String string = "2018-03-05 22:52:52 INFO (app.go:391) - flush done sketch={flushed=264557 total=57979680 pruned=295} num_org_metric=448 since_ms=10964ms dt=2.2392s\n"
+ "2018-03-05 22:53:01 INFO (app.go:391) - flush done sketch={flushed=171045 total=57954960 pruned=253} num_org_metric=448 since_ms=9377ms dt=1.616403s\n"
+ "2018-03-05 22:53:10 INFO (app.go:391) - flush done sketch={flushed=190064 total=57933000 pruned=297} num_org_metric=448 since_ms=9366ms dt=982.968ms\n"
+ "2018-03-05 22:53:20 INFO (app.go:391) - flush done sketch={flushed=153243 total=57932520 pruned=89} num_org_metric=448 since_ms=9908ms dt=891.573ms";
final Pattern pattern = Pattern.compile(regex, Pattern.MULTILINE);
final Matcher matcher = pattern.matcher(string);
while (matcher.find()) {
System.out.println("Full match: " + matcher.group(0));
for (int i = 1; i <= matcher.groupCount(); i++) {
System.out.println("Group " + i + ": " + matcher.group(i));
}
}
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for Java, please visit: https://docs.oracle.com/javase/7/docs/api/java/util/regex/Pattern.html