1. //Merubah tampilan cursor
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
jTextField1.setCursor(new Cursor(Cursor.WAIT_CURSOR));
}
//Ngeprint JTable
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
MessageFormat header = new MessageFormat("Data Siswa");
MessageFormat footer = new MessageFormat("Jumlah yang telah dibayar : "
+jTable1.getRowCount());
try {
jTable1.print(JTable.PrintMode.FIT_WIDTH, header, footer);
} catch (java.awt.print.PrinterException e) {
System.err.format("Cannot print %s%n", e.getMessage());
}
}
//Entity Class
public class Buku {
private String id_buku;
private String nid;
private String nama_buku;
private String penerbit;
private String tahun_buku;
private String jenjang_buku;
private String jumlah;
private String status_buku;
private String harga_buku;
public String getId_buku() {
return id_buku;
}
public void setId_buku(String id_buku) {
this.id_buku = id_buku;
}
public String getNid() {
return nid;
}
public void setNid(String nid) {
this.nid = nid;
}
public String getNama_buku() {
return nama_buku;
}

2. public void setNama_buku(String nama_buku) {
this.nama_buku = nama_buku;
}
public String getPenerbit() {
return penerbit;
}
public void setPenerbit(String penerbit) {
this.penerbit = penerbit;
}
public String getTahun_buku() {
return tahun_buku;
}
public void setTahun_buku(String tahun_buku) {
this.tahun_buku = tahun_buku;
}
public String getJenjang_buku() {
return jenjang_buku;
}
public void setJenjang_buku(String jenjang_buku) {
this.jenjang_buku = jenjang_buku;
}
public String getJumlah() {
return jumlah;
}
public void setJumlah(String jumlah) {
this.jumlah = jumlah;
}
public String getStatus_buku() {
return status_buku;
}
public void setStatus_buku(String status_buku) {
this.status_buku = status_buku;
}
public String getHarga_buku() {
return harga_buku;
}
public void setHarga_buku(String harga_buku) {
this.harga_buku = harga_buku;
}

3. }
//Multiple Selection Table
String list = "Jumlah terseleksi : "+jTable1.getSelectedRowCount()+"n";
int i [] = jTable1.getSelectedRows();
for (int j = 0; j < i.length; j++) {
list += jTable1.getValueAt(i[j], 0)+"n";
}
JOptionPane.showMessageDialog(null, list);
//Multiple Selection Delete Table
int i [] = tableBuku.getSelectedRows();
for (int j = 0; j < i.length; j++) {
bukuService.deleteBuku(tableBuku.getValueAt(i[j], 0).toString());
}
//addItem jCombo tahun dan setSelectedItemCombo berdasarkan tahun sekarang
int tahun = 1981;
for (int i = 0; i < 50; i++) {
comboTahun.addItem(""+tahun++);
}
comboTahun.setSelectedItem(setTahun());
public String setTahun(){
Date date = new Date();
SimpleDateFormat formatTahun = new SimpleDateFormat("yyyy");
String tahun1 = formatTahun.format(date);
return tahun1;
}
//Login
public boolean isLoginAdmin(String user, String pass){
try {
preparedStatement = null;
preparedStatement = DatabaseUtilities.getConnection().prepareStatement(
"SELECT * FROM ADMIN WHERE NID = ? and Password = ?");
preparedStatement.setString(1, user);
preparedStatement.setString(2, pass);
ResultSet rs = preparedStatement.executeQuery();
if(rs.next()){
return true;
}else{
return false;

4. }
} catch (SQLException ex) {
JOptionPane.showMessageDialog(null, "Login Gagal, Karena : "+ex.getMessage());
}
return false;
}
//Insert Buku
public void insertBuku(Buku buku){
preparedStatement = null;
try {
preparedStatement = DatabaseUtilities.getConnection().prepareStatement(
"INSERT INTO BUKU (ID_BUKU, NID, NAMA_BUKU, PENERBIT, "
+ "TAHUN_BUKU, JENJANG_BUKU, JUMLAH, STATUS_BUKU, "
+ "HARGA_BUKU) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?)");
preparedStatement.setString(1, buku.getId_buku());
preparedStatement.setString(2, buku.getNid());
preparedStatement.setString(3, buku.getNama_buku());
preparedStatement.setString(4, buku.getPenerbit());
preparedStatement.setString(5, buku.getTahun_buku());
preparedStatement.setString(6, buku.getJenjang_buku());
preparedStatement.setString(7, buku.getJumlah());
preparedStatement.setString(8, buku.getStatus_buku());
preparedStatement.setString(9, buku.getHarga_buku());
int insertBuku = preparedStatement.executeUpdate();
if(insertBuku == 1){
JOptionPane.showMessageDialog(null, "Insert berhasil");
}else{
JOptionPane.showMessageDialog(null, "Insert gagal","Error
Message",JOptionPane.ERROR_MESSAGE);
}
} catch (SQLException ex) {
JOptionPane.showMessageDialog(null, "Insert gagal karena :
"+ex.getMessage(),"Error Message",JOptionPane.ERROR_MESSAGE);
}
}
//Update Buku
public void updateBuku(Buku buku){
preparedStatement = null;
try {
preparedStatement = DatabaseUtilities.getConnection().prepareStatement(
"UPDATE BUKU SET NID = ?, NAMA_BUKU = ?, PENERBIT = ?, "
+ "TAHUN_BUKU = ?, JENJANG_BUKU = ?, JUMLAH = ?, STATUS_BUKU = ?, "
+ "HARGA_BUKU = ? WHERE ID_BUKU = ?");

5. preparedStatement.setString(1, buku.getNid());
preparedStatement.setString(2, buku.getNama_buku());
preparedStatement.setString(3, buku.getPenerbit());
preparedStatement.setString(4, buku.getTahun_buku());
preparedStatement.setString(5, buku.getJenjang_buku());
preparedStatement.setString(6, buku.getJumlah());
preparedStatement.setString(7, buku.getStatus_buku());
preparedStatement.setString(8, buku.getHarga_buku());
preparedStatement.setString(9, buku.getId_buku());
int update = preparedStatement.executeUpdate();
if(update == 1 ){
JOptionPane.showMessageDialog(null, "Edit buku berhasil");
}else{
JOptionPane.showMessageDialog(null, "Edit buku gagal","Error
Message",JOptionPane.ERROR_MESSAGE);
}
} catch (SQLException ex) {
JOptionPane.showMessageDialog(null, "Edit buku gagal karena :
"+ex.getMessage(),"Error Message",JOptionPane.ERROR_MESSAGE);
}
}
//Delete Buku
public void deleteBuku(String id_buku){
preparedStatement = null;
try {
preparedStatement = DatabaseUtilities.getConnection().prepareStatement(
"DELETE FROM BUKU WHERE ID_BUKU = ?");
preparedStatement.setString(1, id_buku);
int delete = preparedStatement.executeUpdate();
if(delete == 1){
JOptionPane.showMessageDialog(null, "Hapus buku berhasil");
}else{
JOptionPane.showMessageDialog(null, "Hapus buku gagal","Error
Message",JOptionPane.ERROR_MESSAGE);
}
} catch (SQLException ex) {
JOptionPane.showMessageDialog(null, "Hapus buku gagal karena : "+ex.getMessage());
}
}

6. //Default Table Model
public DefaultTableModel getAllSiswa(){
DefaultTableModel model = null;
model = new DefaultTableModel();
model.addColumn("NIS");
model.addColumn("NID");
model.addColumn("NAMA SISWA");
model.addColumn("SEKOLAH SISWA");
model.addColumn("KELAS SISWA");
model.addColumn("JENIS KELAMIN");
statement = null;
try {
statement = DatabaseUtilities.getConnection().createStatement();
ResultSet rs = statement.executeQuery("SELECT * FROM SISWA");
while(rs.next()){
model.addRow(new Object[]{rs.getString("NIS"), rs.getString("NID"),
rs.getString("NAMA_SISWA"), rs.getString("SEKOLAH_SISWA"),
rs.getString("KELAS_SISWA"), rs.getString("JENIS_KELAMIN_SISWA")});
}
} catch (SQLException ex) {
Logger.getLogger(SiswaService.class.getName()).log(Level.SEVERE, null, ex);
}
return model;
}