//PROGRAM 9-13
class Barang {
  private String kode;
  private String nama;
  private double harga;
	
  public void setKode(String vKode) {
    try {
      kode = vKode;
      if (kode == null) {
        throw new NullPointerException();
      }
    } catch (NullPointerException npe) {
      System.out.println("KESALAHAN: " + 
        "Kode barang tidak boleh null");
    }
  }
	
  public String getKode() {
    return kode;
  }
	
  public void setNama(String vNama) {
    try {
      nama = vNama;
      if (nama == null) {
        throw new NullPointerException();
      }
    } catch (NullPointerException npe) {
      System.out.println("KESALAHAN: " +
        "Nama barang tidak boleh null");
    }
  }
	
  public String getNama() {
    return nama;
  }
	
  public void setHarga(int vHarga) {
    harga = vHarga;
  }
	
  public double getHarga() {
    return harga;
  }	
}

class DemoThrow {	
  public static void main(String[] args) {	
    
    Barang obj = new Barang();
		
    obj.setKode(null);
    obj.setNama("Buku tulis");
    obj.setHarga(2500);
		
    System.out.println("\nKode : " + obj.getKode());
    System.out.println("Nama   : " + obj.getNama());
    System.out.println("Harga  : " + obj.getHarga());    
  }		
}