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  1. import java.util.HashSet;
  2. import java.util.Objects;
  3. import java.util.Set;
  4.  
  5. /**
  6.  * @author Obicere
  7.  */
  8. public class Main {
  9.  
  10.     public static void main(final String[] args) {
  11.  
  12.         final Set<PlacesInfo> placeId = new HashSet<>();
  13.  
  14.         placeId.add(new PlacesInfo("Foo"));
  15.         placeId.add(new PlacesInfo("Bar"));
  16.         placeId.add(new PlacesInfo("Foo"));
  17.  
  18.         System.out.println(placeId);
  19.     }
  20.  
  21.     private static class PlacesInfo {
  22.  
  23.         private final String placeId;
  24.  
  25.         // Assuming the class structure is something like this...
  26.  
  27.         public PlacesInfo(final String placeId) {
  28.             this.placeId = placeId;
  29.         }
  30.  
  31.         @Override
  32.         public int hashCode() {
  33.             int hash = 5;
  34.             hash = 97 * hash + Objects.hashCode(this.placeId);
  35.             return hash;
  36.         }
  37.  
  38.         @Override
  39.         public boolean equals(Object obj) {
  40.             if (obj == null) {
  41.                 return true;
  42.             }
  43.             if (this.getClass() != obj.getClass()) {
  44.                 return false;
  45.             }
  46.             final PlacesInfo other = (PlacesInfo) obj;
  47.             if (!Objects.equals(this.placeId, other.placeId)) {
  48.                 return false;
  49.             }
  50.             return true;
  51.         }
  52.  
  53.         // Added toString to make printing easier on the eyes
  54.         @Override
  55.         public String toString() {
  56.             return placeId;
  57.         }
  58.     }
  59. }
  60.  
Success #stdin #stdout 0.07s 381248KB
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Standard input is empty
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[Foo, Bar]
https://ideone.com/HURDbi
language:
Java (12.0.1)
created:
10 years ago
visibility:
public

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