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Java

Posted by Riley Bolen
Riley Bolen
26,711 Points

Sorting the items in an ArrayList of Objects

Here is my problem: I have a Property class that will eventually let users input data and create Property objects. The constructor looks like this : new Property( int beds, int baths, int squarefeet, int price, double rent, String zipCode); I have set it up so that when a user makes a new property it will be added to an ArrayList of Property objects. The Property class has a method called getCFScore(); that returns a double. How can I sort the Properties in this list by the value returned by getCFScore? (Property with the highest value is 1st, second highest is 2nd and so on). Thanks in advance.

Riley Bolen
Riley Bolen
26,711 Points

UPDATE: I figured it out! this is what i did: 

Collections.sort(list, new Comparator<Property>() {
                public int compare(Property o1, Property o2) {
                    return String.valueOf(o1.getCFScore()).compareTo(String.valueOf(o2.getCFScore()));
                }
            });

I did a println of the getCFScore values for the Property at index 0, 1, 2 for the list before and after sorting and here are the results:

0.51 , 0.36 , 0.42 ---> 0.36 , 0.42 , 0.51