What regular expression should I use to replace dimension constants

ID_FLOWER_开发者_StackOverflow社区128X128_JPG
ID_APPLE_100X100_ICO
ID_ORANGE_64X64_PNG
ID_SUN_DIAL_64X64_PNG
ID_COMPUTER_16X16_ICO

I have several constants which have been declared like this, what regular expression should I use to replace the dimensions of those constants (e.g. 16X16 or 128X128) to an empty string, so it should look like the following post replacement

ID_FLOWER_JPG
ID_APPLE_ICO
ID_ORANGE_PNG
ID_SUN_DIAL_PNG
ID_COMPUTER_ICO

Note: All such strings with the ID_ prefix

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Find (assuming everything is in uppercase):

(ID_.+_)\d+X\d+_(.+)

The key bit in that regex is \d+X\d+ which looks for at least 1 numeric digit, followed by X, followed by at least 1 numeric digit.

Replace with:

$1$2

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Try with:

(.*)_[0-9]*[Xx][0-9]*_(.*)

Replace with: $1_$2

To test regexp in Eclipse use Eclipse Regular Expression (RegExp) Tester is a very nice plugin.