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SourceCode Simple RMS J2ME
Posted: November 29, 2010 in J2me DevTags: download, j2me, Java, RMS, source code
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SourceCode Tab View Android
Posted: November 29, 2010 in Android DevTags: android, aplikasi android, apps android, download, Java, window tab
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Koneksi Java dg MySql
Posted: November 29, 2010 in JavaTags: Java, koneksi, koneksi mysql java, mysql
Buat Class Koneksi dulu, untuk menghubungkan aplikasi Java dengan Mysql.
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
import com.mysql.jdbc.Driver;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
/**
*
* @author kurniawandwi
*/
public class koneksi {
public static Connection koneksi;
public static Connection getConnection() throws SQLException{
if(koneksi == null){
new Driver();
koneksi = DriverManager.getConnection("jdbc:mysql://localhost:3306/db_meubel","root","");
}
return koneksi;
}
public static void main(String args[]){
try{
getConnection();
System.out.println("Koneksi Sukses");
}
catch(SQLException ex){
System.err.println("Koneksi Gagal");
}
}
}
Sample Resource Management System (RMS) untuk menyimpan data pada aplikasi Mobile J2ME
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
import javax.microedition.rms.*<!--more-->;
public class CRUD_BarKode extends MIDlet implements CommandListener {
//deklarasi
private Display display;
private Form form,banding;
private RecordStore rs;
private RecordEnumeration re;
private ChoiceGroup choicegroup;
private Alert alert;
private List list;
//untuk proses entri data
private Form entri;
private TextField tfNama, tfHarga,tfID_BC,tfKeterangan,tfOld_Id, input1, input2,input3, input4, input5;
//construktor
private final Command cmdKeluar = new Command("Keluar", Command.EXIT, 1);
private final Command cmdPilih = new Command("Pilih", Command.OK, 1);
private final Command cmdSimpan = new Command("Simpan", Command.SCREEN, 1);
private final Command cmdUpdate = new Command("Ubah", Command.SCREEN, 1);
private final Command cmdHapus = new Command("Hapus", Command.SCREEN, 1);
private final Command cmdEdit= new Command("Edit", Command.SCREEN, 1);
private final Command cmdKembali = new Command("Kembali", Command.BACK, 1);
private final Command combanding = new Command("bandingkan", Command.OK, 1);
//instance class
public CRUD_BarKode() {
display = Display.getDisplay(this);
alert = new Alert(null);
alert.setTimeout(Alert.FOREVER);
list = new List(null, Choice.IMPLICIT);
rs = null;
// membuat atau membuka record store
try
{
rs = RecordStore.openRecordStore("db_KodeBar", true);
}
catch (RecordStoreException rse) //klo error = klo exception
{
alert.setString("Record store tidak dapat dibuka. " +"Aplikasi akan dihetikan");
alert.setType(AlertType.ERROR);
display.setCurrent(alert, null);
System.exit(1);
}
}
public void startApp()
{
tambahRecord("0123456789012","Kursi","200000","The overall goal of this book is to provide introductory coverage of Symbian OS");
tambahRecord("9789797635862","Komputer","20000000","The overall goal of this book is to provide introductory coverage of Symbian OS");
tambahRecord("9789797635862","Lemari","2000000","The overall goal of this book is to provide introductory coverage of Symbian OS");
tambahRecord("9789791101349","Meja","200000","The overall goal of this book is to provide introductory coverage of Symbian OS");
form = new Form("Inventarisasi Barang/ Produk");
choicegroup = new ChoiceGroup("Menu Inventarisasi :", Choice.EXCLUSIVE);
choicegroup.append("Tambah Data ", null);
choicegroup.append("Lihat Data ", null);
form.append(choicegroup);
form.addCommand(cmdKeluar);
form.addCommand(cmdPilih);
form.setCommandListener(this);
display.setCurrent(form);
}
public void pauseApp() {
}
public void destroyApp(boolean unconditional) {
}
public void commandAction(Command c, Displayable s)
{
if (c == cmdKeluar)
{
destroyApp(false);
notifyDestroyed();
}
else if (c == cmdPilih)
{
switch (choicegroup.getSelectedIndex())
{
case 0:
{
entriData(); //fungsi masukin data
break;
}
case 1:
{
lihatRecord(); //fungsi liat record
break;
}
}
}
else if (c == cmdKembali)
{
display.setCurrent(form);
}
else if (c == cmdSimpan)
{
alert.setType(AlertType.INFO);
if (!tfNama.equals("") && !tfHarga.equals("") && !tfID_BC.equals("") && !tfKeterangan.equals("")) //cek jika var ada isi nya
{
tambahRecord(tfID_BC.getString(),tfNama.getString(), tfHarga.getString(), tfKeterangan.getString());
alert.setString("Data baru telah berhasil disimpan");
display.setCurrent(alert, form);
}
else //jika data kosong
{
alert.setString("Data Nama Produk, Harga, ID Brcode/ ISBN, Keterangan " + "tidak boleh kosong");
display.setCurrent(alert, entri);
}
}
else if (c == cmdUpdate)
{
alert.setType(AlertType.INFO);
if (!tfNama.equals("") && !tfHarga.equals("") && !tfID_BC.equals("") && !tfKeterangan.equals("")) //cek jika var ada isi nya
{
updateRecord(tfID_BC.getString(),tfNama.getString(), tfHarga.getString(), tfKeterangan.getString(), tfOld_Id.getString());
alert.setString("Data baru telah berhasil disimpan");
display.setCurrent(alert, form);
}
else //jika data kosong
{
alert.setString("Data Nama Produk, Harga, ID Brcode/ ISBN, Keterangan " + "tidak boleh kosong");
display.setCurrent(alert, entri);
}
}
else if (c == cmdHapus || c == cmdEdit)
{
int pos = list.getString(list.getSelectedIndex()).indexOf("->"); //ambil index dari list
String id_bc = list.getString(list.getSelectedIndex()).substring(0, pos);
if(c == cmdHapus){
hapusRecord(id_bc);
}
else{
editData(id_bc);
}
}
}
//fungsi tambah record
public void tambahRecord(String id_bc, String nama, String harga, String keterangan)
{
byte[] temp = null;
try
{
//kosntruktor baos dan dos
ByteArrayOutputStream baos = new ByteArrayOutputStream();
DataOutputStream dos = new DataOutputStream(baos);
//cari fungsi ini ByteArrayOutputStream dan DataOutputStream di internet
dos.writeUTF(id_bc);// tulis var pada dos
dos.writeUTF(nama);// tulis var pada dos
dos.writeUTF(harga);
dos.writeUTF(keterangan);
temp = baos.toByteArray();
}
catch (IOException ioe)
{
ioe.printStackTrace();
}
try
{
rs.addRecord(temp, 0, temp.length); //masukan data pada RecordStore
} catch (RecordStoreNotOpenException rsnoe) {
rsnoe.printStackTrace();
} catch (RecordStoreException rse) {
rse.printStackTrace();
}
}
void updateRecord(String id_bc, String nama, String harga, String keterangan, String Old_Id) {
byte[] temp = null;
try
{
re = rs.enumerateRecords(null, null, false);
while (re.hasNextElement())
{
int i = re.nextRecordId();
temp = rs.getRecord(i);
ByteArrayInputStream bais = new ByteArrayInputStream(temp);
DataInputStream dis = new DataInputStream(bais);
try
{
String vID_BC = dis.readUTF();
if (vID_BC.equals(Old_Id))
{
rs.deleteRecord(i);
break;
}
}
catch (IOException ioe) { ioe.printStackTrace();}
}
re.rebuild();
}
catch (RecordStoreNotOpenException rsnoe) {rsnoe.printStackTrace();}
catch (RecordStoreException rse) {rse.printStackTrace();}
try
{
//kosntruktor baos dan dos
ByteArrayOutputStream baos = new ByteArrayOutputStream();
DataOutputStream dos = new DataOutputStream(baos);
//cari fungsi ini ByteArrayOutputStream dan DataOutputStream di internet
dos.writeUTF(id_bc);// tulis var pada dos
dos.writeUTF(nama);// tulis var pada dos
dos.writeUTF(harga);
dos.writeUTF(keterangan);
temp = baos.toByteArray();
}
catch (IOException ioe)
{
ioe.printStackTrace();
}
try
{
rs.addRecord(temp, 0, temp.length); //masukan data pada RecordStore
} catch (RecordStoreNotOpenException rsnoe) {
rsnoe.printStackTrace();
} catch (RecordStoreException rse) {
rse.printStackTrace();
}
}
public void lihatRecord() {
byte[] temp = null;
list.setTitle("Daftar Barang/ Produk");
list.deleteAll();
try
{
re = rs.enumerateRecords(null, null, false); //enumerasi record
while (re.hasNextElement()) //jk elemen rs lbh dr satu
{
int i = re.nextRecordId();
temp = rs.getRecord(i);
ByteArrayInputStream bais = new ByteArrayInputStream(temp);
DataInputStream dis = new DataInputStream(bais);
try
{
String id_bc = dis.readUTF();
String nama = dis.readUTF();
String harga = dis.readUTF();
String keterangan = dis.readUTF();
list.append(id_bc + "-> \n -"+nama + "\n -Rp "+harga+"\n -"+keterangan+" \n", null);// tampilkan
}
catch (IOException ioe) {ioe.printStackTrace();}
}
list.addCommand(cmdKembali);
list.addCommand(cmdHapus);
list.addCommand(cmdEdit);
list.setCommandListener(this);
display.setCurrent(list);
}
catch (InvalidRecordIDException invID) {invID.printStackTrace();}
catch (RecordStoreNotOpenException rsnoe) {rsnoe.printStackTrace();}
catch (RecordStoreException rse) {rse.printStackTrace();}
}
public void hapusRecord(String id_bc)
{
byte[] temp = null;
try
{
re = rs.enumerateRecords(null, null, false);
while (re.hasNextElement())
{
int i = re.nextRecordId();
temp = rs.getRecord(i);
ByteArrayInputStream bais = new ByteArrayInputStream(temp);
DataInputStream dis = new DataInputStream(bais);
try
{
String vID_BC = dis.readUTF();
if (vID_BC.equals(id_bc))
{
rs.deleteRecord(i);
break;
}
}
catch (IOException ioe) { ioe.printStackTrace();}
}
re.rebuild(); //memulai enumerasi baru, karena data telah berubah
lihatRecord();
}
catch (RecordStoreNotOpenException rsnoe) {rsnoe.printStackTrace();}
catch (RecordStoreException rse) {rse.printStackTrace();}
}
public Form entriData()
{
entri = new Form("Entri Data");
tfID_BC = new TextField("ID Barcode / ISBN :", null, 25, TextField.ANY);
tfNama = new TextField("Nama Barang/ Produk :", null, 25, TextField.ANY);
tfHarga = new TextField("Harg a:", null, 15, TextField.NUMERIC);
tfKeterangan = new TextField("Keterangan :", null, 100, TextField.ANY);
entri.append(tfID_BC);
entri.append(tfNama);
entri.append(tfHarga);
entri.append(tfKeterangan);
entri.addCommand(cmdSimpan);
entri.addCommand(cmdKembali);
entri.setCommandListener(this);
display.setCurrent(entri);
return entri;
}
public Form editData(String Id_Old)
{
entri = new Form("Edit Data");
tfOld_Id = new TextField("ID Barcode / ISBN (Lama):", Id_Old, 25, TextField.UNEDITABLE);
tfID_BC = new TextField("ID Barcode / ISBN (Baru):", Id_Old, 25, TextField.ANY);
tfNama = new TextField("Nama Barang/ Produk :", null, 25, TextField.ANY);
tfHarga = new TextField("Harg a:", null, 15, TextField.NUMERIC);
tfKeterangan = new TextField("Keterangan :", null, 100, TextField.ANY);
entri.append(tfOld_Id);
entri.append(tfID_BC);
entri.append(tfNama);
entri.append(tfHarga);
entri.append(tfKeterangan);
entri.addCommand(cmdUpdate);
entri.addCommand(cmdKembali);
entri.setCommandListener(this);
display.setCurrent(entri);
return entri;
}
}
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