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java.lang.Objectnet.sourceforge.pmd.CommonAbstractRule
net.sourceforge.pmd.AbstractJavaRule
net.sourceforge.pmd.AbstractRule
net.sourceforge.pmd.rules.AbstractInefficientZeroCheck
net.sourceforge.pmd.rules.strings.InefficientEmptyStringCheck
public class 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 |
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Fields inherited from interface net.sourceforge.pmd.Rule |
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LOWEST_PRIORITY, PRIORITIES |
Constructor Summary | |
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InefficientEmptyStringCheck()
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Method Summary | |
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boolean |
appliesToClassName(java.lang.String name)
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boolean |
isTargetMethod(NameOccurrence occ)
Determine if we're dealing with String.length method |
Methods inherited from class net.sourceforge.pmd.rules.AbstractInefficientZeroCheck |
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visit |
Methods inherited from class net.sourceforge.pmd.AbstractJavaRule |
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addViolation, addViolation, addViolation, addViolationWithMessage, apply, getDeclaringType, importsPackage, isQualifiedName, 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, visitAll |
Methods inherited from class java.lang.Object |
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clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public InefficientEmptyStringCheck()
Method Detail |
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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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