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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4.  
  5. class Ideone
  6. {
  7. 	public static void main (String[] args) throws java.lang.Exception
  8. 	{
  9. 		System.out.println(
  10.             "ArrayList ordered? " +
  11.             ((new ArrayList<>().stream().spliterator().characteristics() & Spliterator.ORDERED) == Spliterator.ORDERED)
  12.         );
  13.  
  14.         System.out.println(
  15.             "ArrayList distinct? " +
  16.                 ((new ArrayList<>().stream().spliterator().characteristics() & Spliterator.DISTINCT) == Spliterator.DISTINCT)
  17.         );
  18.  
  19.         System.out.println(
  20.             "HashSet ordered? " +
  21.                 ((new HashSet<>().stream().spliterator().characteristics() & Spliterator.ORDERED) == Spliterator.ORDERED)
  22.         );
  23.  
  24.         System.out.println(
  25.             "HashSet distinct? " +
  26.                 ((new HashSet<>().stream().spliterator().characteristics() & Spliterator.DISTINCT) == Spliterator.DISTINCT)
  27.         );
  28. 	}
  29. }
Success #stdin #stdout 0.16s 39708KB
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Standard input is empty
stdout
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ArrayList ordered? true
ArrayList distinct? false
HashSet ordered? false
HashSet distinct? true
https://ideone.com/QXTIpC
language:
Java (HotSpot 12)
created:
4 years ago
visibility:
public

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