Question

Must use JOPTIONPANE. Using arrays and methods create a JAVA program. Create a java program that holds an array for the integer values 1-10. Pass the array to a method that will calculate the values to the power of 2 of each element in the array. Then return the list of calculated values back to the main method and print the values

Answer 1

//Drop a comment if anything is wrong or the code requires any modification

import javax.swing.JOptionPane;

class Main {

    public static void main(String[] args) {

    

        //the required array

        int[] numbers={1,2,3,4,5,6,7,8,9,10};

        int[] poweredNumbers=toPowerOf2(numbers);

        //stores the output to print

        String output="";

        //iterates over every element in element of the array

        for (int i:poweredNumbers){

            //appends the output string

            output=output+i+" ";

        }

        //displays the required JOptionPane

        JOptionPane.showMessageDialog( null, output );

  }

    //the following method raises every number in the array to its power of 2

    static int[] toPowerOf2(int[] a){

        for (int i=0;i<10;i++){

            a[i]=a[i]*a[i];

        }

        return a;

    }

}

//------------------------------------------------------------------

i 149 16 25 36 49 64 81 100 OK