Java: Sort a given array list

Last update on May 21 2025 12:47:03 (UTC/GMT +8 hours)

8. Sort ArrayList

Write a Java program to sort a given array list.

Pictorial Presentation:

Sample Solution:-

Java Code:

import java.util.*;
  public class Exercise8 {
  public static void main(String[] args) {
  // Creae a list and add some colors to the list
  List<String> list_Strings = new ArrayList<String>();
  list_Strings.add("Red");
  list_Strings.add("Green");
  list_Strings.add("Orange");
  list_Strings.add("White");
  list_Strings.add("Black");
  System.out.println("List before sort: "+list_Strings);
  Collections.sort(list_Strings);
  System.out.println("List after sort: "+list_Strings);    
 }
}

Sample Output:

List before sort: [Red, Green, Orange, White, Black]                   
List after sort: [Black, Green, Orange, Red, White]

Flowchart:

For more Practice: Solve these Related Problems:

• Write a Java program to sort an ArrayList of strings in ascending order using Collections.sort() and compare it with a custom comparator.
• Write a Java program to sort an ArrayList of integers in descending order using a lambda expression.
• Write a Java program to sort an ArrayList of custom objects by a specific attribute using Comparator.comparing().
• Write a Java program to sort an ArrayList in natural order and then reverse the order using Collections.reverse().

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