containsRange() is an instance method of the Range class that is used to check if the range contains all the elements of the range passed as a parameter.
RangeWe can find the definition of Range 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-langpackage, refer to the Maven Repository.
We can import the Range class as follows:
import org.apache.commons.lang3.Range;
public boolean containsRange(final Range<T> otherRange)
final Range<T> otherRange: The Range object to check.This method returns true if the Range object contains all the elements of the Range object passed as a parameter. Otherwise, it returns false.
import org.apache.commons.lang3.Range;public class Main{public static void main(String[] args) {int fromValue = 100;int toValue = 400;Range<Integer> range1 = Range.between(fromValue, toValue);fromValue = 150;toValue = 200;Range<Integer> range2 = Range.between(fromValue, toValue);// Example 1System.out.printf("%s.containsRange(%s) = %s", range1, range2, range1.containsRange(range2));System.out.println();// Example 2fromValue = 300;toValue = 500;range2 = Range.between(fromValue, toValue);System.out.printf("%s.containsRange(%s) = %s", range2, range1, range2.containsRange(range1));System.out.println();}}
range1 = [100..400]range2 = [150..200]The method returns true, which indicates that range1 contains all the elements of range2.
range1 = [100..400]range2 = [300..500]The method returns false, which indicates that range2 does not contain all the elements of range1.
The output of the code will be as follows:
[100..400].containsRange([150..200]) = true
[300..500].containsRange([100..400]) = false