Example - Map

I. Task
Map item to a new form while iterating through the collection.

II. Notes

• Java 7 - getter
• Java 8
  • map (T -> R)
  • map (Function<T,R>)

III. Java Codes

• Ex3_1_Map.java
  => retrieve base form of all records that are adv or adj
  • Field 2: category is "adv" or "adj"
  • retrieve Field 5: base form
• Ex3_2_uSort.java
  => Distinct & sort
• Ex3_2_uSort.java
  => Sort(Comparator<T>)
  => Sort by category
  => Reversed sort
  => Composed sort

IV. Results

• Ex3_1_Map.out.7
  => result from Java 7 - getter
• Ex3_1_Map.out.8
  => result from Java 8 stream.map (sequential)
• Ex3_1_Map.out.8f
  => result from Java 8 stream.map (function)
• Ex3_1_Map.out.8p
  => result from Java 8 parallelStream.map -> map
• Ex3_1_Map.out.8pc
  => result from Java 8 parallelStream.map -> map -> collect

• Ex3_2_uSort.out.7uSort
  => result from Java 7 - distinct and sort
• Ex3_2_uSort.out.8uSort
  => result from Java 8 - distinct and sort
• Ex3_2_uSort.out.8uSortp
  => result from Java 8 parallelStream - distinct and sort
• Ex3_2_uSort.out.8uSortpc
  => result from Java 8 parallelStream - distinct and sort - collect

• Ex3_3_Comparator.out.7ComparatorCatInflVar
  => result from Java 7 - comparator
• Ex3_3_Comparator.out.8ComparatorCat
  => result from Java 8 - comparing( )
• Ex3_3_Comparator.out.8ComparatorCatInflVar
  => result from Java 8 - comparing( ).thenComparing( )
• Ex3_3_Comparator.out.8ComparatorCatInflVarp
  => result from Java 8 -> parallelStream( )
• Ex3_3_Comparator.out.8ComparatorCatInflVarpc
  => result from Java 8 -> parallelStream( ) -> collect