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

    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.RedundantImportCheck

All Implemented Interfaces:
  Configurable, Contextualizable

    public class RedundantImportCheck

extends Check

Checks for imports that are redundant. An import statement is considered redundant if:

- It is a duplicate of another import. This is, when a class is imported more than once.
- The class non-statically imported is from the `java.lang` package. For example importing `java.lang.String`.
- The class non-statically imported is from the same package as the current package.

An example of how to configure the check is:

     <module name="RedundantImport"/>

Compatible with Java 1.5 source.

Version:
  1.0
Author:
  Oliver Burn

Constructor Summary
`RedundantImportCheck()`

Method Summary
`void` `beginTree(DetailAST aRootAST)` Called before the starting to process a tree.
`int[]` `getDefaultTokens()` Returns the default token a check is interested in.
`void` `visitToken(DetailAST aAST)` Called to process a token.

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

### RedundantImportCheck

    public RedundantImportCheck()

Method Detail

### beginTree

    public void beginTree(DetailAST aRootAST)

  Description copied from class: `Check`
  Called before the starting to process a tree. Ideal place to initialise information that is to be collected whilst processing a tree.

  Overrides:
    `beginTree` in class `Check`
  Parameters:
    `aRootAST` - the root of the tree

### 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:
    `TokenTypes`

### 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

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