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  1. import java.util.Date;
  2. import java.util.SortedSet;
  3. import java.util.TreeSet;
  4. import java.util.stream.Stream;
  5. import java.text.SimpleDateFormat;
  6. import java.text.ParseException;
  7.  
  8. class TesteDatas {
  9.  
  10.     public static void main(String[] args) throws ParseException {
  11.  
  12.         SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
  13.         sdf.setLenient(false);
  14.  
  15.         Date[] datas = {sdf.parse("02/02/2000"), sdf.parse("03/03/2000"), sdf.parse("04/04/2000")};
  16.         Date data1 = sdf.parse("03/01/2000");
  17.  
  18.         // Exemplo 1.
  19.         boolean menor1 = true;
  20.         for (Date d : datas) {
  21.             if (d.compareTo(data1) < 0) {
  22.                 menor1 = false;
  23.                 break;
  24.             }
  25.         }
  26.         System.out.println(menor1 ? "Era a menor." : "Não era a menor.");
  27.  
  28.         // Exemplo 2.
  29.         SortedSet<Date> datas2 = new TreeSet<>();
  30.         for (Date d : datas) {
  31.             datas2.add(d);
  32.         }
  33.         datas2.add(data1);
  34.         boolean menor2 = data1.equals(datas2.first());
  35.         System.out.println(menor2 ? "Era a menor." : "Não era a menor.");
  36.  
  37.         // Exemplo 3.
  38.         boolean menor3 = Stream.of(datas).allMatch(d -> data1.compareTo(d) < 0);
  39.         System.out.println(menor3 ? "Era a menor." : "Não era a menor.");
  40.     }
  41. }
Success #stdin #stdout 0.23s 2184192KB
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Standard input is empty
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Era a menor.
Era a menor.
Era a menor.
https://ideone.com/aWeVvL
language:
Java (HotSpot 12)
created:
6 years ago
visibility:
public

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