formlogin.java

[Linuxmania]

agan2 yang baik,,,sy mw tany. NIh sy bkin aplikasi yang konek sm dbase tp

pas login knp button ok-nya ga jln? knp ya?

makasih yah






Code:


package anagram;

import com.mysql.jdbc.Connection;
import com.mysql.jdbc.Statement;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.JOptionPane;

public class Login extends javax.swing.JFrame {

Connection conn;
/** Creates new form Login */
public Login() {
initComponents();
}


public void koneksi() throws SQLException {


try {
String uname = jTextField1.getText();
String kelas = jComboBox1.getSelectedItem().toString();

// create our mysql database connection




Class.forName("com.mysql.jdbc.Driver");
String myUrl = "jdbc:mysql://localhost/anagramdbase";


conn = (Connection) DriverManager.getConnection(myUrl, "root", "");

// our SQL SELECT query.
// if you only need a few columns, specify them by name instead of using "*"

String query2 = "SELECT * FROM User WHERE Nama_User "
+ "= '" + uname + "'" + "and Kelas='" + kelas + "'";

// create the statement

Statement st1 = (Statement) conn.createStatement();

// execute the query

ResultSet rs2 = st1.executeQuery(query2);

// iterate through the result set
while (rs2.next()) {
//pengecekan nilai
JOptionPane.showMessageDialog(rootPane, "Selamat datang"+ uname);
}

st1.close();
} catch (Exception e) {
System.err.println("Got an exception! ");
System.err.println(e.getMessage());
}
}

private void initComponents() {

jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jComboBox1 = new javax.swing.JComboBox();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
jLabel3 = new javax.swing.JLabel();

setDefaultCloseOperation(javax.swing.WindowConstan ts.EXIT_ON_CLOSE);
setBackground(new java.awt.Color(58, 237, 22));

jLabel1.setText("Nama :");

jLabel2.setText("Kelas :");

jComboBox1.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Kelas I", "Kelas II", "Kelas III", "Kelas IV", "Kelas V", "Kelas VI" }));

jButton1.setText("Ok");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});

jButton2.setText("Clear");
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});

jButton3.setText("Cancel");
jButton3.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton3ActionPerformed(evt);
}
});

jLabel3.setFont(new java.awt.Font("Purisa", 1, 18));
jLabel3.setForeground(new java.awt.Color(188, 171, 38));
jLabel3.setText("Anagram Edukatif");

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.G roupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(110, 110, 110)
.addGroup(layout.createParallelGroup(javax.swing.G roupLayout.Alignment.LEADING)
.addComponent(jLabel1)
.addComponent(jLabel2))
.addGap(49, 49, 49)
.addGroup(layout.createParallelGroup(javax.swing.G roupLayout.Alignment.LEADING)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 433, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.G roupLayout.Alignment.TRAILING)
.addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 88, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, 148, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(30, 30, 30)
.addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 103, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addContainerGap(66, Short.MAX_VALUE))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILI NG, layout.createSequentialGroup()
.addComponent(jLabel3, javax.swing.GroupLayout.PREFERRED_SIZE, 204, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(241, 241, 241))
.addGroup(javax.swing.GroupLayout.Alignment.TRAILI NG, layout.createSequentialGroup()
.addComponent(jButton3, javax.swing.GroupLayout.PREFERRED_SIZE, 90, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(81, 81, 81))))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout .Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(51, 51, 51)
.addComponent(jLabel3)
.addGap(51, 51, 51)
.addGroup(layout.createParallelGroup(javax.swing.G roupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(30, 30, 30)
.addGroup(layout.createParallelGroup(javax.swing.G roupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(78, 78, 78)
.addGroup(layout.createParallelGroup(javax.swing.G roupLayout.Alignment.BASELINE)
.addComponent(jButton3)
.addComponent(jButton1)
.addComponent(jButton2))
.addContainerGap(17, Short.MAX_VALUE))
);

pack();
}

private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
try {
// TODO add your handling code here:
koneksi();
} catch (SQLException ex) {
Logger.getLogger(Login.class.getName()).log(Level. SEVERE, null, ex);
}
}

private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
jTextField1.setText("");
jTextField1.requestFocus();
}

private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
if (JOptionPane.showConfirmDialog(null, "Apakah Anda benar-benar akan keluar?","Konfirmasi",
JOptionPane.OK_CANCEL_OPTION,JOptionPane.QUESTION_ MESSAGE)
== JOptionPane.OK_OPTION) {
System.exit(0);
}
}
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Login().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.JComboBox jComboBox1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JTextField jTextField1;
// End of variables declaration

}

run:
X Error of failed request: BadMatch (invalid parameter attributes)
Major opcode of failed request: 42 (X_SetInputFocus)
Serial number of failed request: 2252
Current serial number in output stream: 2252
Java Result: 1
BUILD SUCCESSFUL (total time: 27 seconds)