Comparable vs. Comparator in java
Comparable vs. Comparator Comprable interface is used for natural ordering of any object. Comprable interface is the part of lava.lang package. Suppose you have a class named Car had have attribute name carName and engPower and want to ordering according to carName. Car class must implements Comparable interface. class Car implements Comparable{ private String carName; public String getCarName() { return carName; } public void setCarName(String carName) { this.carName = carName; } // sort for car name public int compareTo(Object obj) { Car car = (Car)obj; /*If you want to desc order*/ //return car.carName.compareTo(this.carName); /*If you want to asc order*/ return this.carName.compareTo(car.carName); } } public class Test { public static void main(String[] args) throws IOException { Car car1 = new Car(); Car car2 = new Car(); Car car3 = new Car(); car1.setCarName("Safari"); car2.setCarName(&