Package net.sourceforge.pmd.lang.java.rule.strings

Class Summary

AppendCharacterWithCharRule	This rule finds the following: StringBuffer.append("c"); // appends a single character It is preferable to use StringBuffer.append('c'); // appends a single character Implementation of PMD RFE 1373863
AvoidDuplicateLiteralsRule
AvoidDuplicateLiteralsRule.ExceptionParser
ConsecutiveAppendsShouldReuseRule	Original rule was written with XPath, but didn't verify whether the two calls to append would have been done on the same variable.
ConsecutiveLiteralAppendsRule	This rule finds concurrent calls to StringBuffer/Builder.append where String literals are used It would be much better to make these calls using one call to .append example: StringBuilder buf = new StringBuilder(); buf.append("Hello"); buf.append(" ").append("World"); This would be more eloquently put as: StringBuilder buf = new StringBuilder(); buf.append("Hello World"); The rule takes one parameter, threshold, which defines the lower limit of consecutive appends before a violation is created.
InefficientEmptyStringCheckRule	This rule finds code which inefficiently determines empty strings.
InefficientStringBufferingRule	How this rule works: find additive expressions: + check that the addition is between anything other than two literals if true and also the parent is StringBuffer constructor or append, report a violation.
InsufficientStringBufferDeclarationRule	This rule finds StringBuffers which may have been pre-sized incorrectly See http://sourceforge.net/forum/forum.php?
StringInstantiationRule
StringToStringRule
UnnecessaryCaseChangeRule
UseIndexOfCharRule
UselessStringValueOfRule
UseStringBufferLengthRule	This rule finds places where StringBuffer.toString() is called just to see if the string is 0 length by either using .equals("") or toString().length() StringBuffer sb = new StringBuffer("some string"); if (sb.toString().equals("")) { // this is wrong } if (sb.length() == 0) { // this is right }