Regular Expressions 101

Exceptionthe literal text Exception (case sensitive)

Non-Capturing Group(?: in thread)

in threadthe literal text in thread (case sensitive)

"the literal text "

Group threadName(?P<threadName>[^"]+)

Negated Character Class[^"]+

+matches at least one character outside the set below:

"the literal " (34₁₀ / 42₈ / 22₁₆)

" the literal text "

Group changethenamelater(?P<changethenamelater>.*)

.*any character (except for line terminators), repeated any number of times

\s+any whitespace character, repeated at least once

Group stackeTrace(?P<stackeTrace>(.|\n)*)

Group 4(.|\n)*

*repeats the group contents below any number of times:

1st Alternative.

.any character (except for line terminators)

2nd Alternative\n

\na line-feed (newline) character (ASCII 10)

Global pattern flags

g modifier: global. Finds all matches instead of stopping after the first

m modifier: multiline. Causes ^ and $ to match the start and end of each line, not only the start and end of the string

Detailed match information will be displayed here automatically.

Search reference

Regular Expression

Exception(?: in thread) "(?P<threadName>[^"]+)" (?P<changethenamelater>.*)\s+(?P<stackeTrace>(.|\n)*)

New

Exception in thread "main" java.lang.NullPointerException
        at com.example.myproject.Book.getTitle(Book.java:16)
        at com.example.myproject.Author.getBookTitles(Author.java:25)
        at com.example.myproject.Bootstrap.main(Bootstrap.java:14)

Regular Expression

Substitution