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java:jfc_intf_sorted_set_map

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java:jfc_intf_sorted_set_map [2015/03/23 07:01]
gthanos [java.util.SortedSet] 		java:jfc_intf_sorted_set_map [2017/02/07 21:24]
gthanos [java.util.SortedMap]
Line 60: Line 60:
   * **[[http://docs.oracle.com/javase/7/docs/api/java/util/SortedMap.html#subMap(K,%20K)|subMap(K fromKey, K toKey)]] - ** Επιστρέφει το υποσύνολο του Set από fromKey (μαζί με το fromKey) έως toKey (χωρίς το toKey).   * **[[http://docs.oracle.com/javase/7/docs/api/java/util/SortedMap.html#subMap(K,%20K)|subMap(K fromKey, K toKey)]] - ** Επιστρέφει το υποσύνολο του Set από fromKey (μαζί με το fromKey) έως toKey (χωρίς το toKey).
  
 +<code java NameProperty.java>
 +import java.util.*;
  
 +public class NameProperty {
 +  private String email;
 +  private String address;
 +
 +  public NameProperty(String mail, String address) {
 +    this.email = mail;
 +    this.address = address;
 +  }
 +
 +  public String getEmail() { return email; }
 +  public String getAddress() { return address; }
 +
 +  public void setEmail(String mail) { email = mail; }
 +  public void setAddress(String address) { this.address = address; }
 +  
 +  public String toString() { return "email: "+email+", address: "+address; }
 +}
 +</code>
 +
 +<code java NameSortedMap.java>
 +import java.util.*;
 +
 +public class NameSortedMap {
 +   static final Comparator<Name> NameOrdering = 
 +                                        new Comparator<Name>() {
 +            public int compare(Name n1, Name n2) {
 +                int cmp = n1.firstName().compareTo(n2.firstName() );
 +                return (cmp != 0 ? cmp : n1.lastName().compareTo(n2.lastName() ));
 +            }
 +    };
 +
 +    public static void main(String[] args) {
 +        
 +        SortedMap<Name,NameProperty> users = new TreeMap<Name,NameProperty>(NameOrdering);
 +        users.put(new Name("Bob", "Travolta"), new NameProperty("bob@travolta.com", "Gklavani 37, 1st floor") );
 +        users.put(new Name("John", "Smith"), new NameProperty("john@smith.com", "Gklavani 37, 2nd floor") );
 +        users.put(new Name("Karl", "Ng"), new NameProperty("karl@ng.com", "Gklavani 37, 3rd floor") );
 +        users.put(new Name("Jeff", "Smith"), new NameProperty("jeff@smith.com", "Gklavani 37, 4th floor") );
 +        users.put(new Name("Tom", "Rich"), new NameProperty("tom@rich.com", "Gklavani 37, 5tht floor") );
 +        for(Map.Entry<Name,NameProperty> u: users.entrySet())
 +          System.out.println(u);
 +          
 +        System.out.println("\n***Print headmap***");
 +          
 +        SortedMap<Name,NameProperty> subusers = users.headMap(new Name("Karl", "Ng"));
 +        for(Map.Entry<Name,NameProperty> u: subusers.entrySet())
 +          System.out.println(u);
 +          
 +        System.out.println("\n***Print tailmap***");
 +          
 +        subusers = users.tailMap(new Name("Karl", "Ng"));
 +        for(Map.Entry<Name,NameProperty> u: subusers.entrySet())
 +          System.out.println(u);
 +    }
 +}
 +</code>
 +
 +|Προηγούμενο: [[:java:jfc_intf_sort | Sorting  ]] | [[:toc | Περιεχόμενα ]] | Επόμενο: [[:java:jfc_algorithms| Αλγόριθμοι ]] |
java/jfc_intf_sorted_set_map.txt · Last modified: 2020/03/15 18:48 (external edit)

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