CRUD MVC Dengan MySql
description
Transcript of CRUD MVC Dengan MySql
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CRUD MVC dengan MySql
Pertama buatlah sebuah database
Setelah database terbuat buatlah sebuah projek dengan nama latihanMVC
Tambahkan folder souce pecage
Pilih tab file
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Klik kanan pada LatihanMVC pilih new other
Tambahkan folder baru dengan nama spc
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Kemudin pilih tab projets klik kanan dan pilih properties
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Double klik pada label src dan editlah keterangannya
Buatlah pecage seperti di bawah ini:
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Pada pecage asep.latihanmvc.DAOInterface
package asep.latihanmvc.DAOInterface;
import asep.latihanmvc.entity.Mahasiswa;
import java.util.List;
/**
*
* @author asep teea
*/
public interface MahasiswaDAOInter {
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public void insertMahasiswa(Mahasiswa mahasiswa)throws Exception;
public void updateMahasiswa(Mahasiswa mahasiswa,String nim)throws Exception;
public void deleteMahasiswa(String nim)throws Exception;
public Mahasiswa getMahasiswa(String nim)throws Exception;
public List<Mahasiswa> selectMahasiswa()throws Exception;
}
Pada pecage aasep.latihanmvc.DAOimp
package asep.latihanmvc.DAOimp;
import asep.latihanmvc.DAOInterface.MahasiswaDAOInter;
import asep.latihanmvc.entity.Mahasiswa;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.util.ArrayList;
import java.util.List;
/**
*
* @author asep teea
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*/
public class MahasiswaDAO implements MahasiswaDAOInter{
private Connection con;
public MahasiswaDAO(Connection con) {
this.con = con;
}
public void insertMahasiswa(Mahasiswa mahasiswa) throws Exception {
try{
String sql="insert into mahasiswa values(?,?,?)";
PreparedStatement st=con.prepareStatement(sql);
st.setString(1, mahasiswa.getNim());
st.setString(2, mahasiswa.getNama());
st.setString(3, mahasiswa.getAlamat());
st.executeUpdate();
}catch(Throwable t){
throw new Exception(t.getMessage());
}
}
public void updateMahasiswa(Mahasiswa mahasiswa,String nim) throws Exception {
try{
String sql="update mahasiswa set Nim=?,Nama=?,Alamat=? where Nim=?";
PreparedStatement st=con.prepareStatement(sql);
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st.setString(1, mahasiswa.getNim());
st.setString(2, mahasiswa.getNama());
st.setString(3, mahasiswa.getAlamat());
st.setString(4, nim);
st.executeUpdate();
}catch(Throwable t){
throw new Exception(t.getMessage());
}
}
public void deleteMahasiswa(String nim) throws Exception {
try{
String sql="delete from mahasiswa where Nim=?";
PreparedStatement st=con.prepareStatement(sql);
st.setString(1, nim);
st.executeUpdate();
}catch(Throwable t){
throw new Exception(t.getMessage());
}
}
public Mahasiswa getMahasiswa(String nim) throws Exception {
try{
Mahasiswa mahasiswa=null;
String sql="select * from mahasiswa where Nim=?";
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PreparedStatement st=con.prepareStatement(sql);
st.setString(1, nim);
ResultSet rs=st.executeQuery();
if(rs.next()){
mahasiswa=new Mahasiswa();
mahasiswa.setNim(rs.getString("Nim"));
mahasiswa.setNama(rs.getString("Nama"));
mahasiswa.setAlamat(rs.getString("Alamat"));
}
return mahasiswa;
}catch(Throwable t){
throw new Exception(t.getMessage());
}
}
public List<Mahasiswa> selectMahasiswa() throws Exception {
try{
String sql="select * from mahasiswa";
List<Mahasiswa> list=new ArrayList<Mahasiswa>();
PreparedStatement st=con.prepareStatement(sql);
ResultSet rs=st.executeQuery();
while(rs.next()){
Mahasiswa m=new Mahasiswa();
m.setNim(rs.getString("Nim"));
m.setNama(rs.getString("nama"));
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m.setAlamat(rs.getString("Alamat"));
list.add(m);
}
return list;
}catch(Throwable t){
throw new Exception(t.getMessage());
}
}
}
Pada pecage asep.latihanmvc.DB
package asep.latihanmvc.DB;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import javax.swing.JOptionPane;
/**
*
* @author asep teea
*/
public class DBConnection {
private String url="jdbc:mysql://localhost:3306/usni";
private String dbnme="usni";
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private String host="localhost:3306";
private String username="root";
private String password="root";
private Connection connection=null;
private static DBConnection mycon=null;
public DBConnection() {
try {
Class.forName("com.mysql.jdbc.Driver").newInstance();
} catch (Throwable ex) {
JOptionPane.showMessageDialog(null, new Object[]{
"terjadi error pada driver dengan ror",
ex.getMessage()
});
}
}
public static DBConnection getInstance(){
DBConnection conn=null;
try{
if(mycon==null){
mycon=new DBConnection();
conn=mycon;
}else if(mycon.getConnection().isClosed()){
mycon=conn;
}else{
conn=mycon;
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}
return conn;
}catch(SQLException e){
return new DBConnection();
}
}
public void closeConnection() throws SQLException{
this.connection.close();
}
public Connection getConnection() throws SQLException {
if(this.connection==null){
this.connection=DriverManager.getConnection(getUrl(), getUsername(), getPassword());
}
return connection;
}
public void setConnection(Connection connection) {
this.connection = connection;
}
//<editor-fold defaultstate="collapted" desc="get set">
public String getDbnme() {
return dbnme;
}
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public void setDbnme(String dbnme) {
this.dbnme = dbnme;
}
public String getHost() {
return host;
}
public void setHost(String host) {
this.host = host;
}
public static DBConnection getMycon() {
return mycon;
}
public static void setMycon(DBConnection mycon) {
DBConnection.mycon = mycon;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
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this.password = password;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
//</editor-fold>
}
Pada pecage asep.latihanmvc.entity
package asep.latihanmvc.entity;
/**
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*
* @author asep teea
*/
public class Mahasiswa {
private String nim;
private String nama;
private String alamat;
public String getAlamat() {
return alamat;
}
public void setAlamat(String alamat) {
this.alamat = alamat;
}
public String getNama() {
return nama;
}
public void setNama(String nama) {
this.nama = nama;
}
public String getNim() {
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return nim;
}
public void setNim(String nim) {
this.nim = nim;
}
@Override
public boolean equals(Object obj) {
if (obj == null) {
return false;
}
if (getClass() != obj.getClass()) {
return false;
}
final Mahasiswa other = (Mahasiswa) obj;
if ((this.nim == null) ? (other.nim != null) : !this.nim.equals(other.nim)) {
return false;
}
if ((this.nama == null) ? (other.nama != null) : !this.nama.equals(other.nama)) {
return false;
}
if ((this.alamat == null) ? (other.alamat != null) : !this.alamat.equals(other.alamat)) {
return false;
}
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return true;
}
@Override
public int hashCode() {
int hash = 5;
hash = 11 * hash + (this.nim != null ? this.nim.hashCode() : 0);
hash = 11 * hash + (this.nama != null ? this.nama.hashCode() : 0);
hash = 11 * hash + (this.alamat != null ? this.alamat.hashCode() : 0);
return hash;
}
}
Pada pecage asep.mahasiswa.controler
package asep.mahasiswa.controler;
import asep.mahasiswa.model.MahasiswaModel;
import asep.mahasiswa.view.MahasiswaView;
import javax.swing.JOptionPane;
/**
*
* @author asep teea
*/
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public class MahasiswaControler {
private MahasiswaModel model;
public void setModel(MahasiswaModel model) {
this.model = model;
}
public void insertmahasiswa(MahasiswaView view){
String nim=view.getTxtNim().getText();
String nama=view.getTxtNama().getText();
String alamat=view.getTxtAlamat().getText();
if(nim.trim().equals("")){
JOptionPane.showMessageDialog(view, "nim tidak boleh kosong");
}else if(nama.trim().equals("")){
JOptionPane.showMessageDialog(view, "nama tidak boleh kosong");
}else if(alamat.trim().equals("")){
JOptionPane.showMessageDialog(view, "alamat tidak boleh kosong");
}else{
try {
model.setNim(nim);
model.setNama(nama);
model.setAlamat(alamat);
model.insertMahasiswa();
JOptionPane.showMessageDialog(view, "mahasiswa berhasil di insert");
} catch (Exception ex) {
JOptionPane.showMessageDialog(view, new Object[]{
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"terjadi error di database",
ex.getMessage()
});
}
}
}
public void updateMahasiswa(MahasiswaView view){
String nim=view.getTxtNim().getText();
String nama=view.getTxtNama().getText();
String alamat=view.getTxtAlamat().getText();
if(nim.trim().equals("")){
JOptionPane.showMessageDialog(view, "nim masih kosong");
}else if(nama.trim().equals("")){
JOptionPane.showMessageDialog(view, "nama masih kosong");
}else if(alamat.trim().equals("")){
JOptionPane.showMessageDialog(view, "alamat masih kosong");
}else{
try {
model.setNim(nim);
model.setNama(nama);
model.setAlamat(alamat);
model.updatetMahasiswa();
JOptionPane.showMessageDialog(view, "mahasiswa berhasil di update");
} catch (Exception ex) {
JOptionPane.showMessageDialog(view, new Object[]{
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"terjadi error di database",
ex.getMessage()
});
}
}
}
public void deleteMahasiswa(MahasiswaView view){
String nim=view.getTxtNim().getText();
if(nim.trim().equals("")){
JOptionPane.showMessageDialog(view, "nim masih kosong");
}else{
try {
model.setNim(nim);
model.deletetMahasiswa();
JOptionPane.showMessageDialog(view, "mahasiswa berhasil di delete");
model.resetMahasiswa();
} catch (Exception ex) {
JOptionPane.showMessageDialog(view, new Object[]{
"terjadi error di database",
ex.getMessage()
});
}
}
}
public void loadMahasiswa(MahasiswaView view){
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String nim=view.getTxtNim().getText();
if(nim.trim().equals("")){
JOptionPane.showMessageDialog(view, "nim masih kosong");
}else{
try {
model.setNim(nim);
model.loadtMahasiswa();
} catch (Exception ex) {
JOptionPane.showMessageDialog(view, new Object[]{
"terjadi error di database",
ex.getMessage()
});
}
}
}
public void resaeatMahasiswa(MahasiswaView view){
model.resetMahasiswa();
}
}
Pada pecage asep.mahasiswa.model
package asep.mahasiswa.model;
import asep.latihanmvc.DAOimp.MahasiswaDAO;
import asep.latihanmvc.DB.DBConnection;
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import asep.latihanmvc.entity.Mahasiswa;
import asep.mahasiswa.model.event.MahasiswaListner;
/**
*
* @author asep teea
*/
public class MahasiswaModel {
private String nim;
private String nama;
private String alamat;
private MahasiswaListner listner;
public MahasiswaListner getListner() {
return listner;
}
public void setListner(MahasiswaListner listner) {
this.listner = listner;
fireOnChange();
}
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public String getAlamat() {
return alamat;
}
public void setAlamat(String alamat) {
this.alamat = alamat;
fireOnChange();
}
public String getNama() {
return nama;
}
public void setNama(String nama) {
this.nama = nama;
fireOnChange();
}
public String getNim() {
return nim;
}
public void setNim(String nim) {
this.nim = nim;
fireOnChange();
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}
protected void fireOnChange(){
if(listner!=null){
listner.onChange(this);
}
}
public void insertMahasiswa() throws Exception{
Mahasiswa mahasiswa = new Mahasiswa();
mahasiswa.setNim(nim);
mahasiswa.setNama(nama);
mahasiswa.setAlamat(alamat);
MahasiswaDAO dAO = new MahasiswaDAO(DBConnection.getInstance().getConnection());
dAO.insertMahasiswa(mahasiswa);
}
public void updatetMahasiswa() throws Exception{
Mahasiswa mahasiswa = new Mahasiswa();
mahasiswa.setNim(nim);
mahasiswa.setNama(nama);
mahasiswa.setAlamat(alamat);
MahasiswaDAO dAO = new MahasiswaDAO(DBConnection.getInstance().getConnection());
dAO.updateMahasiswa(mahasiswa, nim);
}
public void deletetMahasiswa() throws Exception{
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MahasiswaDAO dao = new MahasiswaDAO(DBConnection.getInstance().getConnection());
Mahasiswa mahasiswa = dao.getMahasiswa(nim);
dao.deleteMahasiswa(nim);
}
public void loadtMahasiswa() throws Exception{
MahasiswaDAO dao = new MahasiswaDAO(DBConnection.getInstance().getConnection());
Mahasiswa mahasiswa = dao.getMahasiswa(nim);
setNim(mahasiswa.getNim());
setNama(mahasiswa.getNama());
setAlamat(mahasiswa.getAlamat());
}
public void resetMahasiswa(){
setNim("");
setNama("");
setAlamat("");
}
}
Pada pecage asep.mahasisawa.model.event
package asep.mahasiswa.model.event;
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import asep.mahasiswa.model.MahasiswaModel;
/**
*
* @author asep teea
*/
public interface MahasiswaListner {
public void onChange(MahasiswaModel model);
}
Buatlah desain tampilan sbb:
Kodenya sbb:
package asep.mahasiswa.view;
import asep.mahasiswa.controler.MahasiswaControler;
import asep.mahasiswa.model.MahasiswaModel;
import asep.mahasiswa.model.event.MahasiswaListner;
import javax.swing.JTextField;
![Page 28: CRUD MVC Dengan MySql](https://reader036.fdokumen.com/reader036/viewer/2022081413/5477fe0cb4af9f3d7f8b462e/html5/thumbnails/28.jpg)
/**
*
* @author asep teea
*/
public class MahasiswaView extends javax.swing.JPanel implements MahasiswaListner{
private MahasiswaModel model;
private MahasiswaControler controler;
/** Creates new form MahasiswaView */
public MahasiswaView() {
initComponents();
model=new MahasiswaModel();
model.setListner(this);
controler=new MahasiswaControler();
controler.setModel(model);
}
public JTextField getTxtAlamat() {
return txtAlamat;
}
public JTextField getTxtNama() {
return txtNama;
}
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public JTextField getTxtNim() {
return txtNim;
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
txtNim = new javax.swing.JTextField();
txtNama = new javax.swing.JTextField();
txtAlamat = new javax.swing.JTextField();
btnDelete = new javax.swing.JButton();
btnLoad = new javax.swing.JButton();
btnsave = new javax.swing.JButton();
btnUpdate = new javax.swing.JButton();
btnReset = new javax.swing.JButton();
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jLabel1.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT);
jLabel1.setText("Nim");
jLabel2.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT);
jLabel2.setText("Nama");
jLabel3.setHorizontalAlignment(javax.swing.SwingConstants.RIGHT);
jLabel3.setText("Alamat");
btnDelete.setText("Delete");
btnDelete.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnDeleteActionPerformed(evt);
}
});
btnLoad.setText("Load");
btnLoad.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnLoadActionPerformed(evt);
}
});
btnsave.setText("Save");
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btnsave.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnsaveActionPerformed(evt);
}
});
btnUpdate.setText("Update");
btnUpdate.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnUpdateActionPerformed(evt);
}
});
btnReset.setText("Reset");
btnReset.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
btnResetActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
this.setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
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.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jLabel3, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jLabel2, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jLabel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(txtAlamat)
.addComponent(txtNama)
.addGroup(layout.createSequentialGroup()
.addComponent(txtNim, javax.swing.GroupLayout.PREFERRED_SIZE, 130, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(btnDelete)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(btnLoad))))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addContainerGap()
.addComponent(btnsave)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(btnUpdate)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
![Page 33: CRUD MVC Dengan MySql](https://reader036.fdokumen.com/reader036/viewer/2022081413/5477fe0cb4af9f3d7f8b462e/html5/thumbnails/33.jpg)
.addComponent(btnReset)))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(txtNim, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(btnDelete)
.addComponent(btnLoad))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jLabel2)
.addComponent(txtNama, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel3)
.addComponent(txtAlamat, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(btnReset)
![Page 34: CRUD MVC Dengan MySql](https://reader036.fdokumen.com/reader036/viewer/2022081413/5477fe0cb4af9f3d7f8b462e/html5/thumbnails/34.jpg)
.addComponent(btnUpdate)
.addComponent(btnsave))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
}// </editor-fold>
private void btnsaveActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
controler.insertmahasiswa(this);
}
private void btnDeleteActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
controler.deleteMahasiswa(this);
}
private void btnLoadActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
controler.loadMahasiswa(this);
}
private void btnUpdateActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
controler.updateMahasiswa(this);
}
![Page 35: CRUD MVC Dengan MySql](https://reader036.fdokumen.com/reader036/viewer/2022081413/5477fe0cb4af9f3d7f8b462e/html5/thumbnails/35.jpg)
private void btnResetActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
controler.resaeatMahasiswa(this);
}
// Variables declaration - do not modify
private javax.swing.JButton btnDelete;
private javax.swing.JButton btnLoad;
private javax.swing.JButton btnReset;
private javax.swing.JButton btnUpdate;
private javax.swing.JButton btnsave;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JTextField txtAlamat;
private javax.swing.JTextField txtNama;
private javax.swing.JTextField txtNim;
// End of variables declaration
public void onChange(MahasiswaModel model) {
txtNim.setText(model.getNim());
txtNama.setText(model.getNama());
txtAlamat.setText(model.getAlamat());
![Page 36: CRUD MVC Dengan MySql](https://reader036.fdokumen.com/reader036/viewer/2022081413/5477fe0cb4af9f3d7f8b462e/html5/thumbnails/36.jpg)
}
}
Drag and drop…
Ke jframe
Jalankan maka hasinya adalah sbb: