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  1. import java.util.Arrays;
  2. import java.util.List;
  3. import java.util.Collections;
  4. import java.util.Comparator;
  5.  
  6. class SortByComparator
  7. {
  8. 	static class Item{
  9. 		String name;
  10. 		int birth;
  11. 		Item(String n, int b){
  12. 			name = n;
  13. 			birth = b;
  14. 		}
  15. 		public String toString(){
  16. 			return "["+name+", "+birth+"]";
  17. 		}
  18. 	}
  19.  
  20. 	public static void main (String[] args) throws java.lang.Exception
  21. 	{
  22. 		Item chopin = new Item("Chopin", 1810);
  23. 		Item mozart = new Item("Mozart", 1756);
  24. 		Item beethoven = new Item("Beethoven", 1770);
  25. 		List<Item> items = Arrays.asList(chopin, mozart, beethoven);
  26.  
  27. 		Comparator<Item> c = new Comparator<Item>(){
  28. 			public int compare(Item a, Item b){
  29. 				return a.birth - b.birth;
  30. 			}
  31. 		};
  32.  
  33. 		Collections.sort(items, c);
  34.  
  35. 		for(Item it:items)
  36. 			System.out.println(it);
  37. 	}
  38. }
Success #stdin #stdout 0.1s 320576KB
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Standard input is empty
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[Mozart, 1756]
[Beethoven, 1770]
[Chopin, 1810]
https://ideone.com/z0bXdE
language:
Java (HotSpot 12)
created:
8 years ago
visibility:
public

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