public class PerjalananKode {

    public static void main(String[] args) {
        System.out.println("Berjalan di " + System.getProperty("java.vm.name"));
        System.out.println("Versi runtime: " + System.getProperty("java.version"));

        int hargaBuku = 45000;
        int jumlah = 3;
        int total = hargaBuku * jumlah;

        System.out.println("Budi membeli " + jumlah + " buku, total Rp" + total);
    }
}