sebelum mengetikan program di netbeans terlebih dahulu kita buat databasenya dulu di xampp,dengan nama database mahasiswa dan nama tabelnya siswa.
Isi dari nama tabel siswa yaitu;
-Npm(int)(9)(primery key)
-Nama(varchar)(30)
-Jurusan(varchar)(20)
-Telpon(varchar)(13)
-Kelas(varchar)(3)
-Mata Kuliah(varchar)(20)
Dalam pembuatan data di netbeans yaitu;
-untuk mengisi tombol button klik 2x isi kan syintaknya ada bagian dibawah sesuai dengan petunjuk button(simpan,edit,hapus dan keluar)
-untuk mengisi label,textfield,tabel dan combobox sudah ada di sediakan di netbeans sebelah kanan layar.
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
package prjakademik;
import java.awt.HeadlessException;
import java.sql.*;
import javax.swing.*;
import javax.swing.table.*;
/**
*
* @author Rui
*/
public final class mahasiswa extends javax.swing.JFrame {
public Connection conn;
public Statement cn;
/**
* Creates new form mahasiswa
*/
public mahasiswa() {
initComponents();
bersih();
tampildata();
jComboBox1.addItem("-- PILIH --");
jComboBox1.addItem("Sistem Informasi");
jComboBox1.addItem("Teknik Informatika");
jComboBox1.addItem("Manajemen Informatika");
}
public void koneksi(){
try{
Class.forName("com.mysql.jdbc.Driver");
conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/dbmahasiswa","root","");
cn=conn.createStatement();
} catch(ClassNotFoundException | SQLException e) {
JOptionPane.showMessageDialog(null, "koneksi gagal....");
System.out.println(e.getMessage());
}
}
public void bersih(){
jTextField1.setText("");
jTextField2.setText("");
jTextField3.setText("");
jComboBox1.setSelectedItem("-- PILIH --");
}
public void tampildata(){
DefaultTableModel tblmhs = new DefaultTableModel();
tblmhs.addColumn("Npm");
tblmhs.addColumn("Nama");
tblmhs.addColumn("Kelas");
tblmhs.addColumn("Jurusan");
tblmhs.addColumn("Telp");
try{
koneksi();
String sql="Select * from siswa order by npm asc";
ResultSet rs=cn.executeQuery(sql);
while (rs.next())
{
tblmhs.addRow(new Object[]{
rs.getString(1),
rs.getString(2),
rs.getString(3),
rs.getString(4),
rs.getString(5)
});
}
jTable1.setModel(tblmhs);
} catch (Exception e) {
JOptionPane.showMessageDialog(null,"Ada Kesalahan....");
}
}
public void carimhs(){
try{
koneksi();
String sql="Select * from siswa where npm='"+jTextField1.getText()+"'";
ResultSet rs=cn.executeQuery(sql);
if(rs.next())
{
jTextField1.setText(rs.getString(1));
jTextField2.setText(rs.getString(2));
jComboBox1.setSelectedItem(rs.getString(3));
jTextField3.setText(rs.getString(4));
JOptionPane.showMessageDialog(null,"Data Mahasiswa: "+jTextField1.getText()+"sudah ada..!!!");
bersih();
}
} catch(Exception e){}
jTextField2.requestFocus();
}
/**
* 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();
jTextField1 = new javax.swing.JTextField();
jTextField2 = new javax.swing.JTextField();
jComboBox1 = new javax.swing.JComboBox();
jScrollPane1 = new javax.swing.JScrollPane();
jTable1 = new javax.swing.JTable();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jLabel4 = new javax.swing.JLabel();
jTextField3 = new javax.swing.JTextField();
jButton3 = new javax.swing.JButton();
jLabel6 = new javax.swing.JLabel();
jButton5 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jLabel1.setText("NPM");
jLabel2.setText("Nama");
jLabel3.setText("Jurusan");
jTextField1.addKeyListener(new java.awt.event.KeyAdapter() {
public void keyPressed(java.awt.event.KeyEvent evt) {
jTextField1KeyPressed(evt);
}
});
jTable1.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
{null, null, null, null},
{null, null, null, null},
{null, null, null, null},
{null, null, null, null}
},
new String [] {
"Title 1", "Title 2", "Title 3", "Title 4"
}
) {
boolean[] canEdit = new boolean [] {
true, true, true, false
};
public boolean isCellEditable(int rowIndex, int columnIndex) {
return canEdit [columnIndex];
}
});
jTable1.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
jTable1MouseClicked(evt);
}
});
jScrollPane1.setViewportView(jTable1);
jButton1.setText("Simpan");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jButton2.setText("Edit");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});
jLabel4.setText("Telp");
jButton3.setText("Hapus");
jButton3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton3ActionPerformed(evt);
}
});
jLabel6.setFont(new java.awt.Font("Tahoma", 0, 18)); // NOI18N
jLabel6.setText("Entry Data Siswa");
jButton5.setText("Keluar");
jButton5.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton5ActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(145, 145, 145)
.addComponent(jLabel6))
.addGroup(layout.createSequentialGroup()
.addGap(32, 32, 32)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel1)
.addComponent(jLabel2)
.addComponent(jLabel3)
.addComponent(jLabel4))
.addGap(36, 36, 36)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, 126, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, 179, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, 179, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 127, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGroup(layout.createSequentialGroup()
.addComponent(jButton1)
.addGap(29, 29, 29)
.addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 67, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(31, 31, 31)
.addComponent(jButton3, javax.swing.GroupLayout.PREFERRED_SIZE, 67, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(32, 32, 32)
.addComponent(jButton5)))))
.addGap(0, 38, Short.MAX_VALUE))
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 0, Short.MAX_VALUE))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jLabel6)
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(11, 11, 11)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel2))
.addGap(10, 10, 10)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel3))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel4)
.addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(16, 16, 16)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton1)
.addComponent(jButton5)))
.addGroup(layout.createSequentialGroup()
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton2)
.addComponent(jButton3))))
.addGap(18, 18, 18)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 101, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(22, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
// button simpan
try{
koneksi();
String sql="Insert into siswa values('"+jTextField1.getText()+"','"+jTextField2.getText()+"','"+jComboBox1.getSelectedItem()+"','"+jTextField3.getText()+"')";
cn.executeUpdate(sql);
conn.close();
tampildata();
bersih();
JOptionPane.showMessageDialog(null, "Data berhasil di simpan");
} catch (SQLException | HeadlessException e) {
JOptionPane.showMessageDialog(null, "Proses penyimpanan gagal/koneksi gagal..");
System.out.println(e.getMessage());
JOptionPane.showMessageDialog(null,"No Npm : "+jTextField1.getText()+" sudah ada...!!!");
System.out.println(e.getMessage());
bersih();
}
jComboBox1.setSelectedItem("-- PILIH --");
}
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
// button edit
try{
koneksi();
String sql="Update siswa set nama='"+jTextField2.getText()+"',"+"jurusan='"+jComboBox1.getSelectedItem()+"',"+"Kelas='"+"',"+"telp='"+jTextField3.getText()+"'"+"where npm='"+jTextField1.getText()+"'";
cn.executeUpdate(sql);
conn.close();
tampildata();
bersih();
JOptionPane.showMessageDialog(null,"Data berhasil di rubah");
} catch (Exception e) {
JOptionPane.showMessageDialog(null,"Proses update gagal/koneksi gagal...");
System.out.println(e.getMessage());
}
jTextField1.setEnabled(true);
jButton1.setEnabled(true);
jComboBox1.setSelectedItem("-- PILIH --");
}
private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
// button hapus
try{
koneksi();
String sql="delete from siswa where npm='"+jTextField1.getText()+"'";
cn.executeUpdate(sql);
conn.close();
tampildata();
bersih();
JOptionPane.showMessageDialog(null,"Data berhasil di hapus");
} catch (Exception e) {
JOptionPane.showMessageDialog(null,"Proses hapus gagal/koneksi gagal...");
System.out.println(e.getMessage());
}
jTextField1.setEnabled(true);
jButton1.setEnabled(true);
jComboBox1.setSelectedItem("-- PILIH --");
}
private void jTable1MouseClicked(java.awt.event.MouseEvent evt) {
// TODO add your handling code here:
int table=jTable1.getSelectedRow();
//mengambil data dari table
String a=jTable1.getValueAt(table, 0).toString();
String b=jTable1.getValueAt(table,1).toString();
String c=jTable1.getValueAt(table,2).toString();
String d=jTable1.getValueAt(table, 3).toString();
jTextField1.setText(a);
jTextField2.setText(b);
jComboBox1.setSelectedItem(c);
jTextField3.setText(d);
jTextField1.setEnabled(false);
jTextField2.requestFocus();
jButton1.setEnabled(false);
}
private void jTextField1KeyPressed(java.awt.event.KeyEvent evt) {
// TODO add your handling code here:
}
private void jButton5ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
// button keluar
System.exit(0);
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(mahasiswa.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(mahasiswa.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(mahasiswa.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(mahasiswa.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
new mahasiswa().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JButton jButton5;
private javax.swing.JComboBox jComboBox1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel6;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTable jTable1;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;
private javax.swing.JTextField jTextField3;
// End of variables declaration
private void clear(int i) {
throw new UnsupportedOperationException("Not yet implemented");
}
private static class condisi {
public condisi() {
}
}
}
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