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Java Collections reverseOrder[] Method
The reverseOrder[] is a Java Collections class method which returns a comparator that imposes the reverse of the natural ordering on the objects. There is two different types of Java reverseOrder[] method which can be differentiated depending on its parameter. These are:
- Java Collections reverseOrder[] Method
- Java Collections reverseOrder[comp] Method
Java Collections reverseOrder[] Method
The reverseOrder[] method of Java Collections class is used to get the comparator that imposes the reverse of the natural ordering on a collection of objects which implement the Comparable interface.
Java Collections reverseOrder[comp] Method
The reverseOrder[] method of Java Collections class is used to get the comparator that imposes the reverse ordering of the specified comparator.
Syntax
Following is the declaration of reverseOrder[] method:
Parameter
| comp | It is a comparator whose ordering is to be reversed by the returned comparator or null. | Required |
Returns
| reverseOrder[] | It returns a comparator that imposes the reverse natural ordering on a collection of objects that implement the Comparable interface. |
| reverseOrder[Comparatorcomp] | It returns a comparator that imposes the reverse ordering of the specified comparator. |
Exceptions
NA
Compatibility Version
Java 1.5 and above
Example 1
Test it NowOutput:
List sorted in ReverseOrder:
[90, 50, 10, -15, -20]
Example 2
Test it NowOutput:
List sorted in ReverseOrder:
[Ruby, Python, Java, COBOL]
Example 3
Test it NowOutput:
[Ruby, Commit, Pratham, Jaya]
Example 4
Test it NowOutput:
List sorted in ReverseOrder:
120
50
-20
-80
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