How to declare Java array with array size dynamically?

Java 8 Object Oriented Programming Programming

To declare array size dynamically read the required integer value from the user using Scanner class and create an array using the given value:

Example

import java.util.Arrays;
import java.util.Scanner;

public class PopulatingAnArray {
   public static void main(String args[]) {
      System.out.println("Enter the required size of the array :: ");
      Scanner s = new Scanner(System.in);
      int size = s.nextInt();
      int myArray[] = new int [size];
      System.out.println("Enter the elements of the array one by one ");
     
      for(int i = 0; i<size; i++) {
         myArray[i] = s.nextInt();
     }
     System.out.println("Contents of the array are: "+Arrays.toString(myArray));
   }
}

Output

Enter the required size of the array ::
5
Enter the elements of the array one by one
78
96
45
23
45
Contents of the array are: [78, 96, 45, 23, 45]

Ramu Prasad

Published on 09-Jan-2018 11:28:48

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