Berikut ini adalah kerangka program maintenance data barang,
Program Utama
public class MaintainBarang{
private FileBarang dataBarang;
private boolean selesai=false;
public MaintainBarang(){
dataBarang=new FileBarang();
}
public void cetakMenu(){
String menu="Program Maintenance Barang\n"+
"1. Add Barang Baru\n"+
"2. Cari Data Barang\n"+
"3. Cek Harga Barang\n"+
"4. Hapus Data Barang\n"+
"5. View All Data Barang\n"
"6. Selesai\n"+
"Pilih [1-6] > ";
while(!selesai){
System.out.println(menu);
int pilihan=bacaInt();
switch(pilihan){
case 1:doAdd();break;
case 2:cari();break;
case 3:
case 6:selesai=true;break;
default:
}
}
}
public void doAdd(){
System.out.println("Add Data Barang\n");
System.out.println("ID \t:");
System.out.println("Nama \t");
System.out.println("Harga \t");
}
private int bacaInt(){
int i=0;
return i;
}
private String bacaString(){
String s="";
return s;
}
public static void main(String argv[]){
MaintainBarang mb=new MaintainBarang();
mb.cetakMenu();
}
}
Class Barang
public class Barang{
private String id;
private String nama;
private int harga;
public Barang(){
}
public Barang(String id, String nama, int harga){
this.id=id;
this.nama=nama;
this.harga=harga;
}
public String getInfo(){
return id+";"+nama+";"+harga+"#";
}
public String toString(){
return id+"\t"+nama+"\t"+harga;
}
public String getNama(){
return nama;
}
public void setNama(String nama){
this.nama=nama;
}
public String getID(){
return id;
}
public int getHarga(){
return harga;
}
public void setHarga(int harga){
this.harga=harga;
}
}
Class FileBarang
import java.util.Vector;
public class FileBarang{
private Vector dataBarang=new Vector();
private BacaIO bio;
public FileBarang(){
bio=new BacaIO();
}
public void addData(Barang b){
dataBarang.add(b);
tulisKeFile("databarang.txt");
}
public void tulisKeFile(String namaFile){
String data="";
for(Barang brg:dataBarang){
data=data+brg.getInfo();
}
bio.tulisKeFile(namaFile,data);
}
public void bacaData(String namaFile){
String data = bio.bacaFile(namaFile);
String []arrStr=data.split("#");
for(String str:arrStr){
if(str.length()>1)
dataBarang.add(createBarang(str));
}
}
private Barang createBarang(String str){
Barang b=null;
String arrStr[]=str.split(";");
b=new Barang(arrStr[0],arrStr[1],Integer.parseInt(arrStr[2]));
return b;
}
public Barang cariData(String nama){
Barang b=null;
for(Barang brg:dataBarang)
if(brg.getNama().equals(nama))
b=brg;
return b;
}
public int cekHarga(String nama){
Barang b=cariData(nama);
if (b==null)
return 0;
else
return b.getHarga();
}
public void cetakDataBarang(){
System.out.println("=================================");
System.out.println(" ID\t Nama\t Harga ");
System.out.println("=================================");
for(Barang brg:dataBarang)
System.out.println(brg);
System.out.println("=================================");
}
public static void main(String []argv){
FileBarang fb=new FileBarang();
fb.bacaData("databarang.txt");
fb.cetakDataBarang();
fb.addData(new Barang("BR03","Penghapus",500));
System.out.println("Check Harga Buku Gambar:" + fb.cekHarga("Buku Gambar A4"));
}
}
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