How to sort a List in Java

11/29/2012

Call the following method:

java.util.Collections.sort(myList);

This tutorial shows how to sort a list using java with the Collection library.

First, a List of type ArrayList is created. Values in a random order are added to the list. Then the sort method from the collections class is called.

Finally, the content of the list is shown in the output.

Create the following java file:

import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class ListSort {
    public static void main(String[] argv) {
        // Define the list
        List<String> myList = new ArrayList();
        // Add the values
        myList.add("San Francisco");
        myList.add("New York");
        myList.add("Paris");
        myList.add("London");
        // Sort the list
        Collections.sort(myList);
        // Loop on the list
        for (String current : myList) {
            // Write the element in the output
            System.out.println(current);
        }
    }
}

The output will be:

London
New York
Paris
San Francisco

References:

Java 6 Collections

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