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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.util.function.*;
  5. import java.util.stream.*;
  6. import java.lang.*;
  7. import java.io.*;
  8.  
  9.  
  10. class Ideone
  11. {
  12. 	public static void main (String[] args) throws java.lang.Exception
  13. 	{
  14.  
  15.         PredicateFactory predicateFactory = new PredicateFactoryImpl();
  16.         FilterFactory    filterFactory    = new FilterFactoryImpl();
  17.         StreamFactory    streamFactory    = new StreamFactoryImpl();
  18.  
  19.         streamFactory.create()
  20.         .stream()
  21.         .map(filterFactory.create())        
  22.         .filter(predicateFactory.create())
  23.         .collect(Collectors.toList())
  24.         .forEach(System.out::println);
  25.         ;
  26. 	}
  27.  
  28.  
  29.     interface PredicateFactory{
  30.         Predicate<Integer> create();
  31.     }
  32.     static class PredicateFactoryImpl implements PredicateFactory{
  33.         @Override
  34.         public Predicate<Integer> create() {
  35.             return new Predicate<Integer>() {
  36.                 @Override
  37.                 public boolean test(Integer x) {
  38.                     return x > 0 && x < 6;
  39.                 }
  40.             };
  41.         }
  42.     }
  43.  
  44.     interface FilterFactory{
  45.         Function<Integer,Integer>  create();
  46.     }
  47.     static class FilterFactoryImpl implements FilterFactory{
  48.         @Override
  49.         public Function<Integer,Integer>  create() {
  50.             return new Function<Integer,Integer> (){
  51.                 @Override
  52.                 public Integer apply(Integer x) {
  53.                     return x%10;
  54.                 }
  55.             };
  56.         }
  57.     }
  58.  
  59.     interface StreamFactory{
  60.         List<Integer>  create();
  61.     }
  62.     static class StreamFactoryImpl implements StreamFactory{
  63.         @Override
  64.         public List<Integer> create() {
  65.             return Arrays.asList(0, 1, -2, -3, -4, 5,-6, -7 , -8, -9, 10, -11, 12, 14, 13);
  66.         }
  67.     }
  68. }
Success #stdin #stdout 0.1s 48464KB
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https://ideone.com/BDy6be
language:
Java (HotSpot 12)
created:
1 year ago
visibility:
secret

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