Java注释行上所有出现的正则表达式（在Eclipse中）

Question

I need to replace all occurrences of abc with xyz , but only if they occur in Javadoc comments.

I am using Eclipse.

I believe requiring simply that the line starts either with \\s*\\* or \\s/\\* should be sufficient for my purposes (no need to match for "occurs between /** and */ ", but that would work fine too).

I tried using: (\\s\\*|\\s/\\*)(.*)abc and replacing with $1$2xyz but the problem is that the regex is greedy so it gives me only the longest line that matches my string (ie, I can only replace the last abc on any given line). Is there any way to ask it for all the possibilities, or is that outside of the scope of (non-recursive) regular expressions?

If it is outside the scope, would a recursive expression work? (Which Eclipse does not support in any case).

Answer 1

To my knowledge this is not possible. A regex traverses each character of the input text once and it can't go back.

You can either match on the first abc or the last abc of a JavaDoc line, because by the time it has matched on either of them, the characters defining that line as a JavaDoc comment can't be matched again.