CODE LINGUAGEN DE PROGRAMASAUN JAVA

//Author : Mario da Silva
// NIM   : 6701143279
//Kelas  : PIS-14-06
import java.io.BufferedReader;
import java.io.InputStreamReader;
class Laundry{
  String namaPelanggan;
  String alamat;
  String nohp;
  String tanggalMasuk;
  String tanggalPengambilan;
  String jamMasuk;
  String jamPengambilan;
  String beratCucian;
  int hargaPerkg;
  int totalHarga;
 
  public Laundry(){
   hargaPerkg = 5000;
 }
    InputStreamReader isr = new InputStreamReader(System.in);
 BufferedReader input = new BufferedReader(isr);

public void inputDatapelanggan(){
  try{
  String inputDatapelanggan = "";
    System.out.println("");
 System.out.println("========================================");
    System.out.println("|     Inputan Data Pelanggan           |");
 System.out.println("========================================");
 System.out.print("Nama Pelanggan       :");
 namaPelanggan = input.readLine();
 System.out.print("Alamat Pelanggan     :");
 alamat = input.readLine();
 System.out.print("No.Contact Pelanggan :");
 nohp = input.readLine();
 System.out.print("Tanggal Masuk        :");
 tanggalMasuk = input.readLine();
 System.out.print("Jam Masuk            :");
 jamMasuk = input.readLine();
 System.out.print("Tanggal Pengambilan  :");
 tanggalPengambilan = input.readLine();
 System.out.print("Jam Pengambilan      :");
 jamPengambilan = input.readLine();
 System.out.print("Berat Bersih Cucian  :");
 beratCucian = input.readLine();
 }
 catch(Exception e){
    System.out.println(e);
 }
}
 public void viewData(){
   System.out.println("");
   System.out.println("========================================");
   System.out.println("|     Menampilkan detail barang        |");
   System.out.println("========================================");
   System.out.println("Nama Pelanggan       :"+namaPelanggan);
   System.out.println("Alamat Pelanggan     :"+alamat);
   System.out.println("No.HP Pelanggan      :"+nohp);
   System.out.println("Tanggal Masuk        :"+tanggalMasuk);
   System.out.println("Jam Masuk            :"+jamMasuk);
   System.out.println("Tanggal Pengambilan  :"+tanggalPengambilan);
   System.out.println("Jam Pengambilan      :"+jamPengambilan);
   System.out.println("Berat Bersih         :"+beratCucian);
   System.out.println("Harga PerKg          :"+hargaPerkg);
   System.out.println("Total Harga          :"+totalHarga);
 }
   public static void main (String[] args){
     Laundry mario = new Laundry();
    mario.inputDatapelanggan();
    mario.viewData();
   }
 }