确保 compareTo 为不同的对象返回不同的值。
什么意思?
package zh.codegym.task.task17.task1714;
/*
Comparable
*/
public class Beach implements Comparable<Beach> {
private String name;
private float distance;
private int quality;
public Beach(String name, float distance, int quality) {
this.name = name;
this.distance = distance;
this.quality = quality;
}
public synchronized String getName() {
return name;
}
public synchronized void setName(String name) {
this.name = name;
}
public synchronized float getDistance() {
return distance;
}
public synchronized void setDistance(float distance) {
this.distance = distance;
}
public synchronized int getQuality() {
return quality;
}
public synchronized void setQuality(int quality) {
this.quality = quality;
}
public synchronized int compareTo(Beach b){
int cop = quality - b.getQuality();
if (cop != 0) return cop;
else return (int)(distance - b.getDistance());
}
public static void main(String[] args) {
}
}