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POUsing regular expression to find a set number of + JAVA
 

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  1. POUsing regular expression to find a set number of + JAVA
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    <p>I have a program where I want to filter Strings with a set number of "+"'s at the beginning. For example:</p> <pre><code>+++Adam is working very well. ++Adam is working well. +Adam is doing OK. </code></pre> <p>How do I only pick up each particular case (i.e. only one plus sign, only two plus signs, only three plus signs)? I usually get a return of anything beginning with a +. </p> <p>I have the following regex patterns compiled, but I either get only one return (usually the two ++) or all of them: </p> <pre><code>public static String regexpluschar = "^\\Q+\\E{1}[\\w &lt;]"; public static String regexpluspluschar = "^\\Q+\\E{2}[\\w &lt;]"; public static String regexpluspluspluschar = "^\\Q+\\E{3}[\\w &lt;]"; Pattern plusplusplus = Pattern.compile(regexpluspluspluschar); Pattern plusplus = Pattern.compile(regexpluspluschar); Pattern plus = Pattern.compile(regexpluschar); </code></pre> <p>I then try to find using a Matcher class - I've used .find() and .matches() but don't get the result I'm after (java+regex newbie alert here). </p> <pre><code>Matcher matcherplusplusplus = plusplusplus.matcher(check); Matcher matcherplusplus = plusplus.matcher(check); Matcher matcherplus = plus.matcher(check); //OK we have 3+'s if ((matcherplusplusplus.find())==true){ System.out.println("Filtering 3 +s."); System.out.println("filter is " + filter + " in the 3 + filter."); String toChange = getItem(i); setItemFiltered(i, toChange); } //OK - we have 2 +'s if ((matcherplusplus.find())==true){ System.out.println("Filtering 2 +s."); System.out.println("filter is " + filter + " in the 2 + filter."); String toChange = getItem(i); setItemFiltered(i, toChange); } //OK - we have 1 +'s if ((matcherplus.find())==true){ System.out.println("Filtering 1 +."); System.out.println("filter is " + filter + " in the 1 + filter."); String toChange = getItem(i); setItemFiltered(i, toChange); } </code></pre> <p>For the very curious, the above if's are embedded in a for loop that cycles around some JTextFields. Full code at: <a href="http://pastebin.ca/2199327" rel="nofollow">http://pastebin.ca/2199327</a></p>
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    1. COLittle coding hint: you can use `if (matcherplusplusplus.find())` instead of `if ((matcherplusplusplus.find())==true)`
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      1. USPshemo
 

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