DBから取得したデータをJListに入力しようとしています。目的のために、最初にデータをベクターに入れ、次にそのベクターをパラメーターとしてJListコンストラクターを呼び出します。インターフェイスにリストを表示すると、空のように見えますが、これは私には無意味です。コンソールに出力して、ベクトルに正しいデータがあることを確認します。
これが特定のコードスニペットであり、後で完全なクラスです。
特定のスニペット：
query = "SELECT * FROM SENSORES WHERE IDDRONE = " + idDrone;
rs = sentencia.executeQuery(query);
String temp;
Vector<String> vector = new Vector<String>();
while(rs.next())
{
temp = rs.getString("ID") + " " + rs.getString("DESCRIPCION");
vector.add(temp);
}
jList1 = new JList<String>(vector);
System.out.println(vector);
そして、これがクラス全体です。Jlist宣言は最後にあります。
package UI;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Vector;
import javax.swing.JList;
import sqlConnection.DatabaseConnection;
public class DeustoDronesJFrame extends javax.swing.JFrame {
/**
* Creates new form DeustoDronesJFrame
* @throws SQLException
*/
public DeustoDronesJFrame() throws SQLException {
initComponents();
}
/**
* 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.
* @throws SQLException
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
private void initComponents() throws SQLException {
jLabel2 = new javax.swing.JLabel();
jScrollPane1 = new javax.swing.JScrollPane();
jLabel1 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
jButton3 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jLabel2.setFont(new java.awt.Font("Times New Roman", 2, 18)); // NOI18N
jLabel2.setForeground(new java.awt.Color(0, 0, 153));
jScrollPane1.setViewportView(jList1);
Statement sentencia = DatabaseConnection.getInstance().createStatement();
String query = "SELECT * FROM DRONES";
ResultSet rs = sentencia.executeQuery(query);
String idDrone = rs.getString("IDDRONE");
String estadoGPS = rs.getString("ESTADOGPS");
System.out.println(estadoGPS);
if (estadoGPS.equals(estadoGPS))
estadoGPS = "OFF";
else
estadoGPS = "ON";
query = "SELECT * FROM SENSORES WHERE IDDRONE = " + idDrone;
rs = sentencia.executeQuery(query);
String temp;
Vector<String> vector = new Vector<String>();
while(rs.next())
{
temp = rs.getString("ID") + " " + rs.getString("DESCRIPCION");
vector.add(temp);
}
jList1 = new JList<String>(vector);
System.out.println(vector);
jLabel1.setText("jLabel1");
jLabel2.setText("Drone" + idDrone);
jLabel3.setText("GPS " + estadoGPS);
jButton1.setText("CAMBIAR ESTADO GPS");
jButton2.setText("CAMBIAR ESTADO SENSOR");
jButton3.setText("HISTORICO SENSOR");
org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(24, 24, 24)
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jLabel2)
.add(layout.createSequentialGroup()
.add(jScrollPane1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 328, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(42, 42, 42)
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING, false)
.add(jButton2, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.add(jButton3, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
.add(layout.createSequentialGroup()
.add(12, 12, 12)
.add(jLabel1)
.add(84, 84, 84)
.add(jLabel3)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.UNRELATED)
.add(jButton1)))
.addContainerGap(88, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(26, 26, 26)
.add(jLabel2)
.add(24, 24, 24)
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
.add(jLabel1)
.add(jLabel3)))
.add(layout.createSequentialGroup()
.add(63, 63, 63)
.add(jButton1)))
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, 62, Short.MAX_VALUE)
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING, false)
.add(org.jdesktop.layout.GroupLayout.TRAILING, layout.createSequentialGroup()
.add(jScrollPane1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 224, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(69, 69, 69))
.add(layout.createSequentialGroup()
.add(59, 59, 59)
.add(jButton2)
.add(52, 52, 52)
.add(jButton3)
.addContainerGap())))
);
pack();
}// </editor-fold>//GEN-END:initComponents
/**
* @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(DeustoDronesJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(DeustoDronesJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(DeustoDronesJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(DeustoDronesJFrame.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/*
* Create and display the form
*/
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
try {
new DeustoDronesJFrame().setVisible(true);
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
}
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JButton jButton3;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JList jList1;
private javax.swing.JScrollPane jScrollPane1;
// End of variables declaration//GEN-END:variables
}
みんな、ありがとう。