Re: polymorphic voodoo?

From:
ram@zedat.fu-berlin.de (Stefan Ram)
Newsgroups:
comp.lang.java.programmer
Date:
11 Aug 2006 08:31:51 GMT
Message-ID:
<static-type-20060811102902@ram.dialup.fu-berlin.de>
christian.bongiorno@gmail.com writes:

System.out.println("Static type for first is " + .....);
System.out.println("Static type for second is " + .....);
[...] is it possible [...] to determine [...] the static types
of the [...] [arguments]?


  Not really, but here is an approximation that might work
  sometimes:

public class Main
{
  static void printStaticTypesOfExpressions
  ( final java.util.ArrayList first,
    final java.util.ArrayList second )
  { System.out.println( "java.util.ArrayList" );
    System.out.println( "java.util.ArrayList" ); }

  static void printStaticTypesOfExpressions
  ( final java.util.LinkedList first,
    final java.util.ArrayList second )
  { System.out.println( "java.util.LinkedList" );
    System.out.println( "java.util.ArrayList" ); }

  static void printStaticTypesOfExpressions
  ( final java.util.ArrayList first,
    final java.util.LinkedList second )
  { System.out.println( "java.util.ArrayList" );
    System.out.println( "java.util.LinkedList" ); }

  static void printStaticTypesOfExpressions
  ( final java.util.LinkedList first,
    final java.util.LinkedList second )
  { System.out.println( "java.util.LinkedList" );
    System.out.println( "java.util.LinkedList" ); }

  public static void main( final java.lang.String[] args )
  { final java.util.ArrayList list1 = null;
    final java.util.LinkedList list2 = null;
    printStaticTypesOfExpressions( list1, list2 ); }}

java.util.ArrayList
java.util.LinkedList

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