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

Classes & Objects

Mudassir

0 0

Facebook Analytics

Assume how the Facebook application will store the millions of customer's record in real-time: facebook = { 'jose': { 'name': 'jose', 'age': 33, 'hobby': , # cricket,football 'mobile': 1111111111, 'email':...

Logeswaran

0 0

Java8 Filters and collectors

Lets say we have collection of strings and we would like to filter (remove) out certain strings from collection. We could achive the same in java 7 and earlier versions import java.util.ArrayList; import...

Shiva Kumar

0 0

Java Achieve (JAR)

Java Archieve is a binary form to bundle a Java library which equivalent to zip file. It contains .class files, .properties, .jpeg, OR any supporting files to execute this library. For Example- junit.jar,...

Amit K.

0 0

Overloading in JAVA

When a class contains more than one method with the same method name but different argument types, then it is called Overloading. Methods are said to be Overloaded methods. Also, know as Compile time...

Swati S.

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

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

5 Answers

Write a programme to replace the string without using replace command? This is my string. ..... s...

14 Answers

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

78 Answers

Why Java is not a Pure Object oriented Programming Language?

9 Answers

I am a fresher and I want to become a Java developer, so what is necessary to crack the Java interview ?

27 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.