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| Reports calls to the regular expression methods of |
| <b>java.lang.String</b> using constants arguments. |
| Such calls may be profitably replaced with a |
| <b>private static final Pattern</b> field so |
| that the regular expression does not have to be compiled each time it is used. |
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| <p> |
| Use the checkbox below to ignore calls to <b>String.split()</b> which are optimized in Java 7 and above. |
| <b>String.split()</b> has optimizations if the regex is either a one-<b>char</b> <b>String</b> |
| and this character is not one of the regex meta characters ".$|()[{^?*+\\", or |
| a two-<b>char</b> <b>String</b> and the first <b>char</b> is the backslash and |
| the second is not an ascii digit or ascii letter. |
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