Change Name of Import in Java or import two classes with the same name

Question

In Python you can do a   from a import b as c   How would you do this in Java  as I have two imports that are clashing

User · Answer

It s ridiculous that java doesn t have this yet  Scala has it import com text Formatter import com json  Formatter   gt  JsonFormatter   val Formatter textFormatter  val JsonFormatter jsonFormatter

User · Answer

Today I filed a JEP draft to OpenJDK about this aliasing feature  I hope they will reconsider it   If you are interested  you can find a JEP draft here  https   gist github com cardil b29a81efd64a09585076fe00e3d34de7

User · Answer

It s probably worth noting that Groovy has this feature   import java util Calendar import com example Calendar as MyCalendar  MyCalendar myCalendar   new MyCalendar

User · Answer

As the other answers already stated  Java does not provide this feature   Implementation of this feature has been requested multiple times  e g  as JDK-4194542  class name aliasing or JDK-4214789  Extend import to allow renaming of imported type   From the comments      This is not an unreasonable request  though hardly essential  The occasional   use of fully qualified names is not an undue burden  unless the library   really reuses the same simple names right and left  which is bad style        In any event  it doesn t pass the bar of price performance for a language   change    So I guess we will not see this feature in Java anytime soon  -P

User · Answer

Actually it is possible to create a shortcut so you can use shorter names in your code by doing something like this   package com mycompany installer  public abstract class ConfigurationReader       private static class Implementation extends com mycompany installer implementation ConfigurationReader        public abstract String getLoaderVirtualClassPath        public static QueryServiceConfigurationReader getInstance             return new Implementation              In that way you only need to specify the long name once  and you can have as many specially named classes you want   Another thing I like about this pattern is that you can name the implementing class the same as the abstract base class  and just place it in a different namespace  That is unrelated to the import renaming pattern though

User · Answer

Java doesn t allow you to do that  You ll need to refer to one of the classes by its fully qualified name and only import the other one

User · Answer

There is no import aliasing mechanism in Java  You cannot import two classes with the same name and use both of them unqualified   Import one class and use the fully qualified name for the other one  i e   import com text Formatter   private Formatter textFormatter  private com json Formatter jsonFormatter

[java] Change Name of Import in Java, or import two classes with the same name

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