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Notice how the replacement string also contains metacharacters // (the back references to the captured groups) so we use a verbatim // string for that as well.

Pattern ptrn = Pattern.compile("([a-z A-Z] ) (\d )"); Matcher matcher = ptrn.matcher("June 24, August 9, Dec 12"); // This will reorder the string inline and print: // 24 of June, 9 of August, 12 of Dec // Remember that the first group is always the full matched text, so the // month and day indices start from 1 instead of zero.

is a meta character which matches every character except a newline.

Therefore, this regex would match for example 'a ' or 'ax' or 'a0'.

The replacement string can contain references to captured groups in the pattern (using the dollar sign // Lets try and reverse the order of the day and month in a few date // strings.Working with regular expressions in Java generally involves instantiating a However, this does not give you any additional information such as where in the input string the pattern matches, or the groups that matched.So for most purposes, it is both more useful and also more efficient to compile a new // Lets use a regular expression to capture data from a few date strings.String replaced String = matcher.replace All(" of

The replacement string can contain references to captured groups in the pattern (using the dollar sign // Lets try and reverse the order of the day and month in a few date // strings.

Working with regular expressions in Java generally involves instantiating a However, this does not give you any additional information such as where in the input string the pattern matches, or the groups that matched.

So for most purposes, it is both more useful and also more efficient to compile a new // Lets use a regular expression to capture data from a few date strings.

String replaced String = matcher.replace All("$2 of $1"); println(replaced String); , you will notice that you can pass in additional flags to change how input strings are matched.

Most of the available flags are a convenience and can be written into the into the regular expression itself directly, but some can be useful in certain cases.

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The replacement string can contain references to captured groups in the pattern (using the dollar sign // Lets try and reverse the order of the day and month in a few date // strings.Working with regular expressions in Java generally involves instantiating a However, this does not give you any additional information such as where in the input string the pattern matches, or the groups that matched.So for most purposes, it is both more useful and also more efficient to compile a new // Lets use a regular expression to capture data from a few date strings.String replaced String = matcher.replace All("$2 of $1"); println(replaced String); , you will notice that you can pass in additional flags to change how input strings are matched.Most of the available flags are a convenience and can be written into the into the regular expression itself directly, but some can be useful in certain cases.

"); println(replaced String); , you will notice that you can pass in additional flags to change how input strings are matched.Most of the available flags are a convenience and can be written into the into the regular expression itself directly, but some can be useful in certain cases.

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