How to Sort an Array Using Comparator in Java

In this example, we can learn how to sort an array using comparator.

Source Code

package com.beginner.examples;

import java.util.Arrays;
import java.util.Comparator;

public class SortArray {

	public static void main(String[] args) {
		
		//Create String array object.
		String[] strArr = {"Alice", "Jack", "Bob", "Jerry"};
		
		/*
		 * Use the method Arrays.sort()
		 * to sort an Array of objects by passing Comparator object, 
		 * where Comparator holds the sorting logic.
		 */
		Arrays.sort(strArr, new Comparator() {
			public int compare(String o1, String o2) {
                return o1.compareTo(o2);
			}
		});
		
		 for(String str:strArr){
	            System.out.println(str);
	     }

	}

}

Output:

Alice
Bob
Jack
Jerry

References

Imported packages in Java documentation:

Arrays
Comparator