Need java regex to match the below string

What is the 开发者_运维问答java regex to match the below pattern?

<anyString>.<5 or 10>.anyNumber.anyNumber

Here 5 and 10 are numbers.

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.*\.(?:5|10)\.\d+\.\d+

should work.

Explanation:

.*        # any number of characters (except newlines)
\.        # literal dot
(?:5|10)  # 5 or 10
\.        # literal dot
\d+       # one or more digits
\.        # literal dot
\d+       # one or more digits

Remember that, if you use it in Java, you need to escape the backslashes when constructing the regex:

Pattern regex = Pattern.compile(".*\\.(?:5|10)\\.\\d+\\.\\d+");

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Assuming that i read your intention correctly this should work:

   Pattern p = Pattern.compile(".*?\\.(?:5|10)\\.(\\d+)\\.(\\d+)");
    Matcher m;

    m = p.matcher(".5.11.10");
    m.matches(); // == true
    m.group(1).equals("11");
    m.group(2).equals("10");


    m = p.matcher("hannib al.10.11.12");
    m.matches(); // == true
    m.group(1).equals("11");
    m.group(2).equals("12");

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Assuming you mean the example valid string .5.1.1

This form should do the trick

\.(5|10)\.[0-9]\.[0-9]

or if the second two numbers can have more than one character i.e. .10.123.1234

\.(5|10)\.[0-9]*\.[0-9]*