Sorting array of objects by field

Question

I have objects

Person{
    String name;  
    int age;
    float gradeAverage;
    }

Is there an easy way to sort

Person[]         


        

Answer 1

You can implement the Comparable interface to make your class comparable. Make sure to override the compareTo method then.

public class Person implements Comparable {
    String name;
    int age;
    float gradeAverage;

    @Override
    public int compareTo(Person p) {
        if(this.age < p.getAge()) return -1;
        if(this.age == p.getAge()) return 0;
        //if(this.age > p.getAge()) return 1;
        else return 1;
    }

    //also add a getter here
}