public class NilaiBawaan {
    public static void main(String[] args) {
        LembarData data = new LembarData();

        System.out.println("int    : " + data.jumlah);
        System.out.println("double : " + data.harga);
        System.out.println("boolean: " + data.aktif);
        System.out.println("String : " + data.nama);
    }
}

class LembarData {
    int jumlah;
    double harga;
    boolean aktif;
    String nama;
}