CODEWITHSUNDEEP
javaregex
KurdTt-
KurdTt-

Reputation: 533

Cutting the text by regular expression

I have sample data like this:

<o:-200> Text1
<o:7> Text2
<o:218> Text3
<o:325> Text4

What I want to do:

1) Get number from tag (-200, 7, etc.) 2) Add value to this number (e.x. + 100) 3) Changed number replace with whole tag

Output:

-100 Text1
107 Text2
318 Text3
425 Text4

That's my code:

    String s;
    Pattern p1 = Pattern.compile("<o:(-?[0-9]+)>");
    Matcher m = p1.matcher("<o:-200> ABC\n<o:7> ASDQWE\n<o:218> 12345.67\n<o:325> ASDFGD asdfsdf\n");
    StringBuffer s1 = new StringBuffer();
    while (m.find()){
        m.appendReplacement(s1, String.valueOf(100 + Integer.parseInt(m.group(1))));
    }
    s = s1.toString().replaceAll("<o:\\b(\\d+)\\b>", "$1" );
    System.out.println(s);

But my output is:

-100 Text1
107 Text2
318 Text3
425

But I want whole text. ReplaceAll doesn't work (changing all tags with 1st value found).

How can I do that?

Upvotes: 0

Views: 62

Answers (1)

Seelenvirtuose
Seelenvirtuose

Reputation: 20608

Look into the documentation of the method Matcher.appendReplacement. It contains an example that clearly shows you one line missing:

while(...) {...}
m.appendTail(s1); // <- this one

Upvotes: 4

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