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Java Collection, ArrayList Exercises: Print all the elements of a ArrayList using the position of the elements

Java Collection, ArrayList Exercises: Exercise-22 with Solution

Write a Java program to print all the elements of a ArrayList using the position of the elements.

Pictorial Presentation:

Java Collection, ArrayList Exercises: Print all the elements of a ArrayList using the position of the elements

Sample Solution:-

Java Code:

import java.util.ArrayList;
  public class Exercise22 {
    public static void main(String[] args) {
  ArrayList <String> c1 = new ArrayList <String> ();
  c1.add("Red");
  c1.add("Green");
  c1.add("Black");
  c1.add("White");
  c1.add("Pink");
  System.out.println("\nOriginal array list: " + c1);
  System.out.println("\nPrint using index of an element: ");
  int no_of_elements = c1.size();
  for (int index = 0; index < no_of_elements; index++)
   System.out.println(c1.get(index));
 }
}

Sample Output:

Original array list: [Red, Green, Black, White, Pink]                  
                                                                       
Print using index of an element:                                       
Red                                                                    
Green                                                                  
Black                                                                  
White                                                                  
Pink 

Flowchart:

Flowchart: Print all the elements of a ArrayList using the position of the elements.

Java Code Editor:

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Previous: Replace the second element of a ArrayList with the specified element.
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Java: Tips of the Day

countOccurrences

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)
            .count();
}

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