How Do You Define a Comparator in Java

4. Comparator. The Comparator interface defines a compare(arg1, arg2) method with two arguments that represent compared objects, and works similarly to the Comparable. compareTo() method.

How do you create a comparator in Java?

1. import java.util.*;
2. class AgeComparator implements Comparator{
3. public int compare(Object o1,Object o2){
4. Student s1=(Student)o1;
5. Student s2=(Student)o2;
6. if(s1.age==s2.age)
7. return 0;
8. else if(s1.age>s2.age)

What is an example of a comparator?

A comparator circuit compares two voltages and outputs either a 1 (the voltage at the plus side; VDD in the illustration) or a 0 (the voltage at the negative side) to indicate which is larger. Comparators are often used, for example, to check whether an input has reached some predetermined value.