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java.lang.Objectcom.puppycrawl.tools.checkstyle.api.AutomaticBean
com.puppycrawl.tools.checkstyle.api.AbstractViolationReporter
com.puppycrawl.tools.checkstyle.api.Check
com.puppycrawl.tools.checkstyle.checks.imports.AvoidStaticImportCheck
public class AvoidStaticImportCheck
Check that finds static imports.
Rationale: Importing static members can lead to naming conflicts between class' members. It may lead to poor code readability since it may no longer be clear what class a member resides (without looking at the import statement).
An example of how to configure the check is:
<module name="AvoidStaticImport"> <property name="excludes" value="java.lang.System.out,java.lang.Math.*"/> </module>The optional "excludes" property allows for certain classes via a star notation to be excluded such as java.lang.Math.* or specific static members to be excluded like java.lang.System.out for a variable or java.lang.Math.random for a method.
If you exclude a starred import on a class this automatically excludes each member individually.
For example: Excluding java.lang.Math.* will allow the import of each static member in the Math class individually like java.lang.Math.PI
Constructor Summary | |
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AvoidStaticImportCheck()
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Method Summary | |
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int[] |
getDefaultTokens()
Returns the default token a check is interested in. |
void |
setExcludes(String[] aExcludes)
Sets the list of classes or static members to be exempt from the check. |
void |
visitToken(DetailAST aAST)
Called to process a token. |
Methods inherited from class com.puppycrawl.tools.checkstyle.api.Check |
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beginTree, destroy, finishTree, getAcceptableTokens, getClassLoader, getFileContents, getLines, getRequiredTokens, getTabWidth, getTokenNames, init, leaveToken, log, log, setClassLoader, setFileContents, setMessages, setTabWidth, setTokens |
Methods inherited from class com.puppycrawl.tools.checkstyle.api.AbstractViolationReporter |
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getCustomMessages, getId, getMessageBundle, getSeverity, getSeverityLevel, log, setId, setSeverity |
Methods inherited from class com.puppycrawl.tools.checkstyle.api.AutomaticBean |
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configure, contextualize, finishLocalSetup, getConfiguration, setupChild |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public AvoidStaticImportCheck()
Method Detail |
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public int[] getDefaultTokens()
Check
getDefaultTokens
in class Check
TokenTypes
public void setExcludes(String[] aExcludes)
aExcludes
- a list of fully-qualified class names/specific
static members where static imports are okpublic void visitToken(DetailAST aAST)
Check
visitToken
in class Check
aAST
- the token to process
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