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SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Objectnet.sourceforge.pmd.ast.JavaParserVisitorAdapter
net.sourceforge.pmd.AbstractRule
net.sourceforge.pmd.rules.AbstractInefficientZeroCheck
net.sourceforge.pmd.rules.strings.InefficientEmptyStringCheck
This rule finds code which inefficiently determines empty strings. This code
if(str.trim().length()==0){....is quite inefficient as trim() causes a new String to be created. Smarter code to check for an empty string would be:
Character.isWhitespace(str.charAt(i));
Field Summary |
Fields inherited from class net.sourceforge.pmd.AbstractRule |
description, example, externalInfoUrl, include, message, name, priority, properties, ruleSetName, usesDFA, usesTypeResolution |
Fields inherited from interface net.sourceforge.pmd.Rule |
LOWEST_PRIORITY, PRIORITIES |
Constructor Summary | |
InefficientEmptyStringCheck()
|
Method Summary | |
boolean |
appliesToClassName(java.lang.String name)
|
boolean |
isTargetMethod(NameOccurrence occ)
Determine if we're dealing with String.length method |
Methods inherited from class net.sourceforge.pmd.rules.AbstractInefficientZeroCheck |
visit |
Methods inherited from class net.sourceforge.pmd.ast.JavaParserVisitorAdapter |
visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit, visit |
Methods inherited from class java.lang.Object |
clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
public InefficientEmptyStringCheck()
Method Detail |
public boolean isTargetMethod(NameOccurrence occ)
isTargetMethod
in class AbstractInefficientZeroCheck
occ
- The name occurance
public boolean appliesToClassName(java.lang.String name)
appliesToClassName
in class AbstractInefficientZeroCheck
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