Comparable and Comparator, both being interfaces, play a crucial role in sorting elements. This article will delve into the key differences between Comparable and Comparator in Java.
Difference between Comparable and Comparator in Java - Testbook.com
Last Updated on Jul 31, 2023
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Understanding Comparable in Java
In Java, Comparable refers to an object that can be compared with other objects. Numerous built-in classes in Java implement the Comparable interface.
Defining Comparator in Java
The Comparator interface in Java is used for ordering the objects of user-defined classes. It has the ability to compare two objects of the same class.
Comparing Comparable and Comparator in Java
| S.No. | Comparable | Comparator |
|---|---|---|
| 1. | It allows sorting based on a single attribute. We can sort the collection based on a single element. | It allows sorting based on multiple attributes. In this case, we can sort the collection based on multiple elements. |
| 2. | It uses the compareTo() method to sort elements. | It uses the compare() method to sort elements. |
| 3. | It doesn't modify the original class. | It also doesn't modify the original class. |
| 4. | It is part of the java.lang package. | It is part of the java.util package. |
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Frequently Asked Questions
What is Comparable in Java?
Comparable in Java means an object that can be compared to other objects. There are multiple built-in classes that enforce the Java comparable interface.
What is Comparator in Java?
A comparator interface is used to collect the objects of user-defined classes. It is also competent in comparing two objects of an identical class.
What is the main difference between Comparable and Comparator in Java?
The main difference is that Comparable supports single-sorting sequences and has compareTo() technique while Comparator supports multiple sorting sequences and uses compare() technique.
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