Comparable vs Comparator - Learn Data Science with Travis

Comparable-vs-Comparator

In Java, sorting objects is a common requirement, and two key interfaces that facilitate this are Comparable and Comparator. The Comparable interface allows a class to define its natural ordering by implementing the compareTo method, which compares the current object with another object of the same class. On the other hand, the Comparator interface provides a way to define custom sorting logic externally, allowing for multiple sorting criteria without modifying the original class. Understanding the differences between these two interfaces is essential for effective object sorting and is often a topic of discussion in Java interviews.

Explain the Comparator and Comparable interfaces

Javarevisited

Sorting is one of the crucial aspect when we are developing any application. When you are dealing with price or marks etc, we usually use Int or double as data type but what if you are working with cu...

Comparator

Codecademy

The Comparator interface is used to order objects of an arbitrary class . It is not to be confused with the Comparable interface, which is implemented by the class to be sorted. The Comparator interfa...

Comparable vs Comparator Simplified - A Must-Read for Interviews!

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✅ Comparable and Comparator are two ways to achieve this. Understanding their differences and knowing when to use which is essential for cracking Java interviews. In almost every Java interview , you’...

Comparable and Comparator

Essential Java

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You don’t know Comparators in-practice, Do You?

Javarevisited

9 ways you can use Comparators to solve problems When I started learning about sorting objects in Java, I was bored with the interviewer’s favourite question—Comparable vs. Comparator. So, I thought ...

Comparable

Codecademy

The Comparable interface is used to define how a class is to be sorted. It is not to be confused with the Comparator interface, which is implemented in a separate class. The Comparable interface is im...

The compareTo and compare Methods

Essential Java

The Comparable<T interface requires one method: public interface Comparable<T { public int compareTo(T other); } And the Comparator<T interface requires one method: public interface Comparator<T { pub...

Writing and Combining Comparators

Learn Java

Implementing a Comparator with a Lambda Expression Thanks to the definition of functional interfaces, the good old Comparator<T interface introduced in JDK 2 became functional. So, implementing a com...

Java Comparator interface

Javarevisited

To order a collection of objects, Java provides the Comparable and Comparator interfaces. In the previous tutorial, I demonstrated with examples how to use the Comparable interface. In this tutorial,...

Natural comparable vs explicit comparator sorting

Essential Java

There are two Collections.sort() methods: One that takes a List<T as a parameter where T must implement Comparable and override the compareTo() method that determines sort order. One that takes a List...

Creating a Comparator using comparing method

Essential Java

Comparator.comparing(Person::getName) This creates a comparator for the class Person that uses this person name as the comparison source. Also it is possible to use method version to compare long, int...

Comparator Vs Comparable In Java

Javarevisited

As a Java Developer we always come Across these two Interfaces when we need to sort any custom Object ,lets discuss its use cases:-