true

Learn Java Training from the Best Tutors

Affordable fees
1-1 or Group class
Flexible Timings
Verified Tutors

Search in

Comparable vs Comparator

Vivek R.

20/11/2017 1 0

java.lang.Comparable

java.util.Comparator

For comparing some other object with its own object. Ex. I am comparing myself to some other employee.
Method signature is:
int compareTo (T object).
For implementing Comparable, access to the original class is required.
The class itself needs to implement Comparable and hence it is inside java.lang package.
It can be used to provide single way of sorting.

For comparing two objects by a separate class. Ex. Manager is comparing two employees with each other.
Method signature is:
int compare (T object1, T object2).
If the required class is not accessible i.e., present inside some jar, then a Comparator implementation can be used that just accepts the two objects and do the comparison.
It is a utility that can be used by an external class to perform the required action and hence it is inside java.util package.
It can be used to provide multiple sorting ways like NameComparator, SalaryComparator etc.

1 Like 0 Dislike

Follow 2

Other Lessons for You

How to create a Singleton class?

How to create a Singleton class: Q) What is a singleton class? A) In simple words, a singleton class is a class which can have only one instance at any point of time throughout the application and provides...

Gpcomptech

0 0

Priority in TestNG

public class Priority { @Test (priority=1)public void login() {System.out.println("login");} @Testpublic void email1() {System.out.println("email1");} @Test (priority=-2)public void email2() {System.out.println("email2");} //I...

Sarthak C.

0 0

Object Oriented Programming Concepts :

Class : Class is user defined data type. Class is a logical representation of an Object. That means Class is used to define an object, how you want to create your software object. For Example...

Sravani D.

0 0

Introduction to Programming Languages

What is a Programming Language? A programming language is a formal computer language or constructed language designed to communicate instructions to a machine, particularly a computer. Programming languages...

Clevigour Solutions

2 0

JAVA Question 1 for beginners

String x="We are learning";String y="mistakes happen";int z=1000;System.out.println("Java is easy. "+x+" programming and "+y+" "+z +" times"); what is out put this code

Vivek J.

0 0

Find Java Certification near you

Online Java Training

Looking for Java Training Classes?

Learn from Best Tutors on UrbanPro.

Are you a Tutor or Training Institute?

Join UrbanPro Today to find students near you

Java Training Questions

Is it really needed to do Java training before graduation, to get a job?

10 Answers

I want to learn from beginning, please tell me what is the best source to learn (core java)

18 Answers

Should we learn DBMS and RDBMS without any Java training?

6 Answers

Which language has the best future prospects: Python, Java, or JavaScript?

5 Answers

How can I learn Java from home?

5 Answers

Looking for Java Training Classes?

The best tutors for Java Training Classes are on UrbanPro

Select the best Tutor
Book & Attend a Free Demo
Pay and start Learning

Migrate

Class

Subject

Chapter

Migrate to

Concept Solution

Migration Successful

Learn Java Training with the Best Tutors

The best Tutors for Java Training Classes are on UrbanPro

I am a Student I am a Tutor
Name*	Please enter your full name. Please enter institute name.
Email*	Please enter your email address.
Phone*	Please enter a valid phone number.
Location*	Please enter a pincode or area name.
City*	Please enter city name.
Category*	Please enter category.
Gender*	Male Female Please select your gender.
Email ID/ Mobile No.*	Please enter either mobile no. or email.
Enter Password*	Please enter OTP Please enter Password Sorry, this phone number is not verified, Please login with your email Id.