Java Regex to find particular file

Question

In one of my test case I want to copy particular jar of a component from one location to another location. e.g when target directory has only following jars

org.test.custom.search-4.2.2-SNAPSHOT-.jar
org.test.custom.search-4.2.2-tests-SNAPSHOT.jar

I want to copy the org.test.custom.search-4.2.2-SNAPSHOT-.jar . Where version of this jar can be changed at any time . So I can use the regex for that purpose as mentioned here[1]. But I want to know how to omit the other jar in regex. i.e want to omit the jar which has string "tests" in its name.

1.Regex for files in a directory

You could use something to filter files with a stream?

ifly6
– ifly6

2016-07-29 08:02:56 +00:00
Commented Jul 29, 2016 at 8:02 — ifly6
– ifly6, Commented Jul 29, 2016 at 8:02

xenteros · Accepted Answer · 2016-07-29 10:31:11Z

1

You can use indexOf instead of regex to check if the file name containing the word "tests" like this:

if(fileName.indexOf("tests") >= 0) {
    // do what you want
}

Update: indexOf() will be much quicker than a regex, and is probably also easier to understand.

edited Jul 29, 2016 at 10:31

xenteros

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answered Jul 29, 2016 at 8:05

Bahramdun Adil

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7 Comments

izi Over a year ago

This will filter both files at the moment. Modifying to "-tests-" would solve the problem

Bahramdun Adil Over a year ago

Sir if you see it is 'tests' not 'test'. Anyway the way I show is OK.

xenteros Over a year ago

Where in your answer is regex which the question is about?

Bahramdun Adil Over a year ago

In question says: 'want to omit the jar which has string "tests" in its name' and also my answer is exactly is to solve this problem.

xenteros Over a year ago

The title is Java regex to find.

|

xenteros · Accepted Answer · 2016-07-29 08:10:50Z

1

The regex based solution would be:

if (fileName.matches(".*tests.*")) {
    //do something
} else {
    //do something else
}

answered Jul 29, 2016 at 8:10

xenteros

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Comments

Drgabble · Accepted Answer · 2016-07-29 08:48:13Z

0

Matches the SNAPSHOT exactly with any given version number, ignoring all others (including tests-SNAPSHOT):

org\.test\.custom\.search-\d+\.\d+\.\d+-SNAPSHOT-\.jar

answered Jul 29, 2016 at 8:48

Drgabble

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Comments

Hosam Aly · Accepted Answer · 2016-07-29 08:34:01Z

-1

One regex to match the main jar but not the test jar could be:

\w+-[\d.]+-(?!tests-).*\.jar

It has a negative matcher for the string "tests-". Note that you'll have to escape the backslashes when you put this regex into a string.

answered Jul 29, 2016 at 8:34

Hosam Aly

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