Sorting TreeSet Using Comparator

From Java Example Source Code

[edit] Overview - Sorting TreeSet Using Comparator

This Java example program introduces a sorting TreeSet using Comparator.

[edit] Java Source Code

• Package: example.set
• File: Comp.java

package example.set;
 
import java.util.Collections;
import java.util.Set;
import java.util.TreeSet;
 
public class Comp {
    public static void main(String args[]) throws Exception {
	String elements[] = { "Irish Setter", "Poodle", "English Setter", "Gordon Setter", "Pug" };
	Set set = new TreeSet(Collections.reverseOrder());
	for (int i = 0, n = elements.length; i < n; i++) {
	    set.add(elements[i]);
	}
	System.out.println(set);
	System.out.println(((TreeSet) set).comparator());
    }
}

[edit] What Result You Can Get

Run the program, you will get:

[Pug, Poodle, Irish Setter, Gordon Setter, English Setter]
java.util.Collections$ReverseComparator@f62373

[edit] Required External Libraries and/or Files for this Java Example

Need nothing.

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[edit] Question & Answer

Any question?

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