Java to sort list of custom object on the basis of string

Question

class Person 
 {
 private String name;
 private String profession;
}

profession has values:

• engineer
• Doctor<

Answer 1

You can sort your custom object using Collection.sort method like this,

Collections.sort(list, new Comparator(){

        public int compare(Object o1, Object o2) {
            Person p1 = (Person) o1;
            Person p2 = (Person) o2;
            return p1.getProfession().compareToIgnoreCase(p2.getProfession());
        }

    });

To Sort in reverse order just make your return statement line like this,

p2.getProfession().compareToIgnoreCase(p1.getProfession());

This will directly make your list sorted.