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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6. import java.util.Arrays;
  7. import java.util.stream.Collectors;
  8.  
  9. /* Name of the class has to be "Main" only if the class is public. */
  10. class Ideone
  11. {
  12. 	public static void main (String[] args) throws java.lang.Exception
  13. 	{
  14. 		LinkedList<Pet> pets = new LinkedList<>();
  15. 		pets.add(new CAT());
  16. 		pets.get(0).setName("Meow0");
  17. 		pets.add(new DOG());
  18. 		pets.get(1).setName("Woof0");
  19. 		pets.add(new CAT());
  20. 		pets.get(2).setName("Meow1");
  21. 		pets.add(new DOG());
  22. 		pets.get(3).setName("Woof1");
  23. 		pets.add(new CAT());
  24. 		pets.get(4).setName("Meow2");
  25.  
  26. 		System.out.println(Ideone.dequeueDog(pets).getName());
  27. 	}
  28.  
  29. 	public static class Pet {
  30. 	    private String name;
  31.  
  32. 	    public String getName() {
  33. 	        return name;
  34. 	    }
  35.  
  36. 	    public Pet setName(String name) {
  37. 	        this.name = name;
  38. 	        return this;
  39. 	    }
  40. 	}
  41.  
  42. 	public static class CAT extends Pet{}
  43.  
  44. 	public static class DOG extends Pet{}
  45.  
  46. 	private static Pet dequeueDog(LinkedList<Pet> linkedList) {
  47.  
  48. 		List<Pet> dogList = linkedList.stream().filter(u -> u.getClass() == DOG.class).collect(Collectors.toList());
  49.         int locationDog = linkedList.lastIndexOf(dogList.get(dogList.size()-1));
  50.         return linkedList.remove(locationDog);
  51.     }
  52. }
  53.  
Success #stdin #stdout 0.25s 320832KB
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Woof1
https://ideone.com/lnu7pC
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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