Also arbeite ich an einem sehr einfachen Code, der Comparable
ein Gemälde basierend auf Jahr, Künstler und Titel vergleicht.Implements Comparable Missing One Merkmal
Allerdings vergleicht mein Code nicht die Gemälde nach Titel, nur Jahr und Künstler.
public class Main {
/**
* @param args the command line arguments
*/
public static void main(String[] args) {
// TODO code application logic here
Painting p1 = new Painting(Year.NINETYEIGHT, artist.ART1, title.TIT1);
Painting p2 = new Painting(Year.NINETYEIGHT, artist.ART1, title.TIT2);
System.out.println("p1: " + p1.toString());
System.out.println("p2: " + p2.toString());
if(p1.compareTo(p2)> 0){
System.out.println(p1.toString() + " beats " + p2.toString());
} else if(p1.compareTo(p2) < 0){
System.out.println(p2.toString() + " beats " + p1.toString());
} else{
System.out.println("Same Everything");
}
}
}
public enum Year {
NINETYSEVEN, NINETYEIGHT, NINETYNINE, TWOTHOUSAND
}
public enum artist {
ART1, ART2, ART3,
}
public enum title {
TIT1, TIT2,TIT3,
}
public class Painting implements Comparable {
private title title;
private Year year;
private artist artist;
public Painting(Year y, artist a, title t) {
title = t;
year = y;
artist = a;
}
@Override
public int compareTo(Object o) {
//compare values
Painting other = (Painting) o;
int yearCompare = this.year.compareTo(other.year);
int artistCompare = this.artist.compareTo(other.artist);
if (yearCompare == 0) {
//same year, compare artist
return this.artist.compareTo(other.artist);
} else if (artistCompare == 0) {
return this.title.compareTo(other.title);
} else {
return yearCompare;
}
}
@Override
public String toString() {
return title.name() + " by " + artist.name() + " produced " + year.name();
}
}
Mögliches Duplikat von [Verwendung von Komparator zur benutzerdefinierten Sortierung] (http://stackoverflow.com/questions/5245093/using-comparator-to-make-custom-sort) –