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## com.puppycrawl.tools.checkstyle.checks.imports
Class AvoidStarImportCheck

    java.lang.Object
      com.puppycrawl.tools.checkstyle.api.AutomaticBean
          com.puppycrawl.tools.checkstyle.api.AbstractViolationReporter
              com.puppycrawl.tools.checkstyle.api.Check
                  com.puppycrawl.tools.checkstyle.checks.imports.AvoidStarImportCheck

All Implemented Interfaces:
  Configurable, Contextualizable

public class AvoidStarImportCheck
extends Check

Check that finds import statements that use the * notation.

Rationale: Importing all classes from a package leads to tight coupling between packages and might lead to problems when a new version of a library introduces name clashes.

An example of how to configure the check is:

     <module name="AvoidStarImport">
       <property name="excludes" value="java.io,java.net"/>
     </module>

The optional "excludes" property allows for certain packages like java.io or java.net to be exempted from the rule. Note that the excludes property is not recursive, subpackages of excluded packages are not automatically excluded.

Version:
  1.0
Author:
  Oliver Burn, Bill Schneider

Constructor Summary
`AvoidStarImportCheck()`

Method Summary
`int[]` | `getDefaultTokens()` Returns the default token a check is interested in.
`void` | `setExcludes(java.lang.String[] aExcludes)` Sets the list of packages to exempt from the check.
`void` | `visitToken(DetailAST aAST)` Called to process a token.

Methods inherited from class com.puppycrawl.tools.checkstyle.api.Check
`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
`getMessageBundle, getSeverity, getSeverityLevel, log, log, log, log, log, log, log, log, log, setSeverity`

Methods inherited from class com.puppycrawl.tools.checkstyle.api.AutomaticBean
`configure, contextualize, finishLocalSetup, getConfiguration, setupChild`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### AvoidStarImportCheck

    public AvoidStarImportCheck()

Method Detail

### getDefaultTokens

    public int[] getDefaultTokens()

  Description copied from class: `Check`
  Returns the default token a check is interested in. Only used if the configuration for a check does not define the tokens.

  Specified by:
    `getDefaultTokens` in class `Check`
  Returns:
    the default tokens
  See Also:
    `Check`

### setExcludes

    public void setExcludes(java.lang.String[] aExcludes)

  Sets the list of packages to exempt from the check.

  Parameters:
    `aExcludes` - a list of package names where star imports are ok

### visitToken

    public void visitToken(DetailAST aAST)

  Description copied from class: `Check`
  Called to process a token.

  Overrides:
    `visitToken` in class `Check`
  Parameters:
    `aAST` - the token to process
  See Also:
    `Check`

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