UpdateGrade.java

import javax.swing.*;
import javax.swing.table.DefaultTableModel;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;


/*
 * To change this license header, choose License Headers in Project Properties.
 * To change this template file, choose Tools | Templates
 * and open the template in the editor.
 */


public class UpdateGrade extends javax.swing.JFrame {

    Connection con= null;
    PreparedStatement pst =null;
    ResultSet rs= null;
    public UpdateGrade() {
        initComponents();
        con=(Connection) operators.connect();
    }
    
    

    /**
     * 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">//GEN-BEGIN:initComponents
    private void initComponents() {

        jButton2 = new javax.swing.JButton();
        jButton3 = new javax.swing.JButton();
        jButton4 = new javax.swing.JButton();
        jButton5 = new javax.swing.JButton();
        jButton6 = new javax.swing.JButton();
        label1 = new java.awt.Label();
        label4 = new java.awt.Label();
        jButton1 = new javax.swing.JButton();
        label5 = new java.awt.Label();
        label6 = new java.awt.Label();
        jTextField2 = new javax.swing.JTextField();
        jTextField3 = new javax.swing.JTextField();
        jTextField4 = new javax.swing.JTextField();
        jScrollPane1 = new javax.swing.JScrollPane();
        jTable1 = new javax.swing.JTable();
        jButton7 = new javax.swing.JButton();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

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

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

        jButton4.setText("List Of Lessons");
        jButton4.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton4ActionPerformed(evt);
            }
        });

        jButton5.setText("Add Exam");
        jButton5.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton5ActionPerformed(evt);
            }
        });

        jButton6.setText("Update Grade");
        jButton6.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton6ActionPerformed(evt);
            }
        });

        label1.setText("StudentID");

        label4.setText("New Grade");

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

        label5.setFont(new java.awt.Font("Dialog", 1, 36)); // NOI18N
        label5.setForeground(new java.awt.Color(0, 153, 255));
        label5.setText("Update Grade");

        label6.setText("ExamID");

        jTextField2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jTextField2ActionPerformed(evt);
            }
        });

        jTextField3.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jTextField3ActionPerformed(evt);
            }
        });

        jTextField4.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jTextField4ActionPerformed(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, null, null, null, null}
            },
            new String [] {
                "StudentID", "LessonName", "ExamID", "ExamType", "ExamPoint"
            }
        ));
        jScrollPane1.setViewportView(jTable1);

        jButton7.setText("Show");
        jButton7.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton7ActionPerformed(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()
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addContainerGap()
                        .addComponent(jButton2)
                        .addGap(18, 18, 18)
                        .addComponent(jButton4)
                        .addGap(18, 18, 18)
                        .addComponent(jButton6)
                        .addGap(18, 18, 18)
                        .addComponent(jButton5)
                        .addGap(18, 18, 18)
                        .addComponent(jButton3))
                    .addGroup(layout.createSequentialGroup()
                        .addGap(44, 44, 44)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                            .addComponent(jButton1)
                            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                                .addComponent(label5, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addGroup(layout.createSequentialGroup()
                                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                        .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
                                            .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                                                .addComponent(label6, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                                                .addComponent(label1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                                            .addGap(109, 109, 109))
                                        .addGroup(layout.createSequentialGroup()
                                            .addComponent(label4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                                            .addGap(101, 101, 101)))
                                    .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                                        .addComponent(jTextField2)
                                        .addComponent(jTextField3)
                                        .addComponent(jTextField4, javax.swing.GroupLayout.PREFERRED_SIZE, 125, javax.swing.GroupLayout.PREFERRED_SIZE))
                                    .addGap(15, 15, 15))))
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(layout.createSequentialGroup()
                                .addGap(44, 44, 44)
                                .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 436, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addGroup(layout.createSequentialGroup()
                                .addGap(244, 244, 244)
                                .addComponent(jButton7)))))
                .addContainerGap(67, 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(jButton2)
                    .addComponent(jButton3)
                    .addComponent(jButton4)
                    .addComponent(jButton5)
                    .addComponent(jButton6))
                .addGap(37, 37, 37)
                .addComponent(label5, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(53, 53, 53)
                .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(layout.createSequentialGroup()
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(label1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(jTextField2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addGap(36, 36, 36)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                            .addComponent(label6, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(jTextField3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                        .addGap(41, 41, 41)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                            .addComponent(label4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                            .addComponent(jTextField4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)))
                    .addGroup(layout.createSequentialGroup()
                        .addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 166, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(18, 18, 18)
                        .addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                            .addComponent(jButton7)
                            .addComponent(jButton1))))
                .addContainerGap(78, Short.MAX_VALUE))
        );

        pack();
    }// </editor-fold>//GEN-END:initComponents

    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton2ActionPerformed
        // TODO add your handling code here:
        new ListOfStudent().setVisible(true);
        this.setVisible(false);
    }//GEN-LAST:event_jButton2ActionPerformed

    private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton3ActionPerformed
        // TODO add your handling code here:
        new RemoveStudent().setVisible(true);
        this.setVisible(false);
    }//GEN-LAST:event_jButton3ActionPerformed

    private void jButton4ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton4ActionPerformed
        // TODO add your handling code here:
        new ListOfLessons().setVisible(true);
        this.setVisible(false);
    }//GEN-LAST:event_jButton4ActionPerformed

    private void jButton5ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton5ActionPerformed
        // TODO add your handling code here:
        new AddExam().setVisible(true);
        this.setVisible(false);
    }//GEN-LAST:event_jButton5ActionPerformed

    private void jButton6ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton6ActionPerformed
        // TODO add your handling code here:
        new UpdateGrade().setVisible(true);
        this.setVisible(false);
    }//GEN-LAST:event_jButton6ActionPerformed

    private void jTextField2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jTextField2ActionPerformed
        // TODO add your handling code here:
    }//GEN-LAST:event_jTextField2ActionPerformed

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
        // TODO add your handling code here:
        String inputstudentID = jTextField2.getText();
        String inputexamID = jTextField3.getText();
        String inputexampoint = jTextField4.getText();
        
        try{
            String sql = "UPDATE examenrollment SET exampoint = '"+inputexampoint+"' WHERE '"+inputstudentID+"' = FK_studentID AND '"+inputexamID+"' = FK_examID ";
            PreparedStatement pst=con.prepareStatement(sql);
            pst.execute();
           // JOptionPane.showMessageDialog(rootPane, " sucess");
            
        } catch(Exception e){
            JOptionPane.showMessageDialog(rootPane, e);
        }
        
    }//GEN-LAST:event_jButton1ActionPerformed

    private void jButton7ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton7ActionPerformed
        // TODO add your handling code here:
        String inputstudentID = jTextField2.getText();
        
        try{
           // String sql = "SELECT s.studentID, s.name, s.surname FROM student s, lessonenrollment le, lesson l WHERE "+inputlessonID+" = le.FK3_lessonID AND le.FK2_studentID = s.studentID ORDER BY s.studentID ASC ";
            PreparedStatement pst =con.prepareCall("SELECT s.studentID,l.lessonName, e.examID, e.examType, ee.exampoint FROM student s, examenrollment ee, exam e,lesson l WHERE '"+inputstudentID+"' = s.studentID AND s.studentID = ee.FK_studentID AND ee.FK_examID = e.examID AND e.FK_lessonID = l.lessonID");
            ResultSet rs = pst.executeQuery();
            DefaultTableModel tm = (DefaultTableModel)jTable1.getModel();
            tm.setRowCount(0);
            
            while(rs.next()){
                Object o[] = {rs.getInt("studentID"),rs.getString("lessonName"),rs.getString("examID"),rs.getString("examType"),rs.getString("exampoint")};
                tm.addRow(o);
                
            }
          //  JOptionPane.showMessageDialog(rootPane, "Creating Sign Sheet");
        } catch(Exception e){
            JOptionPane.showMessageDialog(rootPane, e);
        }
        
    }//GEN-LAST:event_jButton7ActionPerformed

    private void jTextField3ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jTextField3ActionPerformed
        // TODO add your handling code here:
    }//GEN-LAST:event_jTextField3ActionPerformed

    private void jTextField4ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jTextField4ActionPerformed
        // TODO add your handling code here:
    }//GEN-LAST:event_jTextField4ActionPerformed

    /**
     * @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(UpdateGrade.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(UpdateGrade.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(UpdateGrade.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(UpdateGrade.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() {
                new UpdateGrade().setVisible(true);
            }
        });
    }

    // 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.JButton jButton4;
    private javax.swing.JButton jButton5;
    private javax.swing.JButton jButton6;
    private javax.swing.JButton jButton7;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTable jTable1;
    private javax.swing.JTextField jTextField2;
    private javax.swing.JTextField jTextField3;
    private javax.swing.JTextField jTextField4;
    private java.awt.Label label1;
    private java.awt.Label label4;
    private java.awt.Label label5;
    private java.awt.Label label6;
    // End of variables declaration//GEN-END:variables
}