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

Difference Between Checked And Un-Checked Exception

1. Exception is an abnormal condition in the program, if raises program terminates abnormally. 2. Exception always occurs at runtime only, there is no chance of exception at compile time. 3. Syntactical...

Md Ajmat

0 0

How to create excel sheets using Java?

HSSFWorkbook workbook = new HSSFWorkbook();HSSFSheet sheet1 = workbook.createSheet("actions");for (int i = 0; i < 10; i++) { sheet1.createRow(i); for (int j = 0; j < 10; j++) { HSSFRow currRow =...

Devendra V

1 0

JAVA - Object Cloning

JAVA - Object Cloning Is the way of creating the same copy of object without calling the class constructor. It means we can make any class object multiple times without calling its default constructor....

Gaurav Kothari

1 0

Big Data Hadoop Training

What is Big Data? Big data means really a big data, it is a collection of large datasets that cannot be processed using traditional computing techniques. Big data is not merely a data, rather it has become...

Rajendra Mahakali

2 0

Why Should We Learn Java Language?

Most of starters has confusion today that which of the programming language should be chosen to work on. It totally depends upon your need. As per my opinion, if you want to grow your career in IT industry...

Gaurav

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

Why Java is not a Pure Object oriented Programming Language?

9 Answers

Hi, We provide online instructor-led training. I am looking for Java Teacher/Instructor who can teach...

78 Answers

Should we learn DBMS and RDBMS without any Java training?

6 Answers

I know HTML, CSS, and a bit of JavaScript. What should I learn next?

10 Answers

What is the general syllabus covered in core Java training from any institution?

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

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.