Contoh Program Penjualan Barang Diskon Sederhana Menggunakan Eclipse

package object;
import java.util.Scanner;
public class Penjualan {

public static void main(String[] args) {
Scanner aa = new Scanner(System.in);

String nama;
double harga;
double jumlah;
double total;
double disc=0;
char jawab;
double tobar=0;
double topen=0;
double dispen=0;
char jaw;

do
{
nama ="";
harga=0;
jumlah=0;
total=0;
disc=0;
tobar=0;
topen=0;
dispen=0;

do
{
System.out.print("Nama Barang : ");
nama=aa.next();
System.out.print("Harga Barang : ");
harga=aa.nextDouble();
System.out.print("Jumlah dijual : ");
jumlah=aa.nextDouble();
tobar=tobar+jumlah;
total=harga*jumlah;

System.out.println("Total Jual : " + total);

if (total > 100000)
{
disc = total * 0.1;
System.out.println("Selamat, Anda mendapatkan diskon dari barang ini senilai " + disc);
}

topen=topen+(total-disc);

System.out.print("Tambah Barang ? (y/t) ");
jawab=aa.next().charAt(0);

}while(jawab=='y'|| jawab=='Y');

System.out.println("---------------------------------------------------------------------");
System.out.println("Total Barang : "+tobar);
System.out.println("Total Penjualan : Rp. "+topen);

if(topen > 500000)
{
dispen=topen*0.05;
System.out.println("Selamat, anda mendapatkan diskon dari total penjualan senilai "+dispen);
}

System.out.println("Transaksi Baru ? (y/t)");
jaw=aa.next().charAt(0);

}while(jaw=='y'|| jaw=='Y');

}

}