What is Range.equals() in Java?
Overview
The equals() method is an instance method of the Range class. It checks if two Range objects are equal. For the Range objects to be equal, the minimum and maximum values must be the same.
How to import range
The definition of Range can be found in the Apache Commons Lang package, which we can add to the Maven project by adding the following dependency to the pom.xml file:
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.12.0</version>
</dependency>
For other versions of the commons-lang package, refer to the Maven Repository.
You can import the Range class as follows:
import org.apache.commons.lang3.Range;
Syntax
public boolean equals(final Object obj)
Parameters
final Object obj: The reference object with which to compare.
Return value
This method returns true if the objects are equal. Otherwise, it returns false .
Code
import org.apache.commons.lang3.Range;public class Main{public static void main(String[] args) {// Example 1int fromValue = 100;int toValue = 200;Range<Integer> range1 = Range.between(fromValue, toValue);Range<Integer> range2 = Range.between(fromValue, toValue);System.out.printf("(%s == %s) = %s", range1, range2, range1.equals(range2));System.out.println();// Example 2toValue = 300;range2 = Range.between(fromValue, toValue);System.out.printf("(%s == %s) = %s", range1, range2, range1.equals(range2));}}
Output
The output of the code will be as follows:
([100..200] == [100..200]) = true
([100..200] == [100..300]) = false
Code explanation
Example 1
range1 = [100..200]range2 = [100..200]
The method returns true as the minimum and maximum values of the objects are equal.
Example 2
range1 = [100..200]range2 = [100..300]
The method returns false as the maximum values of the objects are not equal.
