Java Collection, ArrayList Exercises: Extract a portion of a array list
Java Collection, ArrayList Exercises: Exercise-12 with Solution
Write a Java program to extract a portion of a array list.
Pictorial Presentation:
Sample Solution:-
Java Code:
import java.util.*;
public class Exercise12 {
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("Original list: " + list_Strings);
List<String> sub_List = list_Strings.subList(0, 3);
System.out.println("List of first three elements: " + sub_List);
}
}
Sample Output:
Original list: [Red, Green, Orange, White, Black] List of first three elements: [Red, Green, Orange]
Flowchart:
Java Code Editor:
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Next: Compare two array lists.
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Java: Tips of the Day
How to sort an ArrayList?
Collections.sort(testList); Collections.reverse(testList);
That will do what you want. Remember to import Collections though!
Ref: https://bit.ly/32urdSe
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