The Dawn Notes

import javax.swing.JOptionPane;

public class T3_JOptionPane {

    public static void main(String[] args) {
        int bil1, bil2, bil3, counter;
        float average;
        String input1 = JOptionPane.showInputDialog("Masukkan Bilangan ke-1 :");
        bil1 = Integer.parseInt(input1);
        String input2 = JOptionPane.showInputDialog("Masukkan Bilangan ke-2 :");
        bil2 = Integer.parseInt(input2);
        String input3 = JOptionPane.showInputDialog("Masukkan Bilangan ke-3 :");
        bil3 = Integer.parseInt(input3);
        counter = bil1 + bil2 + bil3;
        average = counter / 3;
        String msg = "Jumlah Bilangan : " + counter + "\n Rata -Rata Bilangan : " + average;
        JOptionPane.showMessageDialog(null, msg);
    }
}