Java Collection, ArrayList Exercises: Increase the size of an array list

Java Collection, ArrayList Exercises: Exercise-20 with Solution

Write a Java program to increase the size of an array list.

Pictorial Presentation:

Java Collection, ArrayList Exercises: Increase the size of an array list

Sample Solution:-

Java Code:

import java.util.ArrayList;
import java.util.Collections;
  public class Exercise20 {
  public static void main(String[] args) {
          ArrayList<String> c1= new ArrayList<String>(3);
          System.out.println("Original array list: " + c1);
          //Increase capacity to 6
          System.out.println("New array list: " + c1);

Sample Output:

Original array list: [Red, Green, Black]                               
New array list: [Red, Green, Black, White, Pink, Yellow]


Flowchart: Increase the size of an array list.

Java Code Editor:

Contribute your code and comments through Disqus.

Previous: Trim the capacity of an array list the current list size.
Next: Replace the second element of a ArrayList with the specified element.

What is the difficulty level of this exercise?

Test your Programming skills with w3resource's quiz.

Share this Tutorial / Exercise on : Facebook and Twitter

Java: Tips of the Day


Counts the occurrences of a value in an array.

Use Arrays.stream().filter().count() to count total number of values that equals the specified value.

public static long countOccurrences(int[] numbers, int value) {
    return Arrays.stream(numbers)
            .filter(number -> number == value)

Ref: https://bit.ly/3kCAgLb