java—在NetBeans12.0中，输出控制台显示build successful，但即使给定时间也没有输出

我正在运行一个使用netbeans的tuck shop管理系统，这个程序一开始运行得非常好，但是现在每当我尝试运行它时，它都会显示build successful并给出一个随机时间，但我看不到输出。请我是一个ib学生，这个项目是我的内部评估。下面是我得到的全部代码和输出。
/*
 * 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.
 */
package IA;

import java.awt.HeadlessException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import javax.swing.JFrame;
import javax.swing.JOptionPane;

/**
 *
 * @author cnoye
 */
public class loginPage extends javax.swing.JFrame {

    /**
     * Creates new form loginPage
     */
    public loginPage() {
        initComponents();

        //center the form 
        this.setLocationRelativeTo(null);

        //create a yellow border for the panel title
    }

    /**
     * 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() {

        jPanel1 = new javax.swing.JPanel();
        jPanel2 = new javax.swing.JPanel();
        jLabel6 = new javax.swing.JLabel();
        jPanel3 = new javax.swing.JPanel();
        jLabel1 = new javax.swing.JLabel();
        jLabel2 = new javax.swing.JLabel();
        jLabel3 = new javax.swing.JLabel();
        user = new javax.swing.JTextField();
        pass = new javax.swing.JPasswordField();
        jButton1 = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();
        jLabel4 = new javax.swing.JLabel();
        jLabel5 = new javax.swing.JLabel();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        setBackground(new java.awt.Color(255, 255, 255));
        setPreferredSize(new java.awt.Dimension(600, 460));

        jPanel1.setLayout(null);

        jPanel2.setBackground(new java.awt.Color(102, 255, 255));

        jLabel6.setIcon(new javax.swing.ImageIcon(getClass().getResource("/IA/user.png"))); // NOI18N

        javax.swing.GroupLayout jPanel2Layout = new javax.swing.GroupLayout(jPanel2);
        jPanel2.setLayout(jPanel2Layout);
        jPanel2Layout.setHorizontalGroup(
            jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel2Layout.createSequentialGroup()
                .addContainerGap(27, Short.MAX_VALUE)
                .addComponent(jLabel6)
                .addContainerGap())
        );
        jPanel2Layout.setVerticalGroup(
            jPanel2Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel2Layout.createSequentialGroup()
                .addContainerGap(187, Short.MAX_VALUE)
                .addComponent(jLabel6)
                .addGap(185, 185, 185))
        );

        jPanel1.add(jPanel2);
        jPanel2.setBounds(0, 0, 170, 500);

        jPanel3.setBackground(new java.awt.Color(255, 255, 255));

        jLabel1.setFont(new java.awt.Font("Times New Roman", 1, 36)); // NOI18N
        jLabel1.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        jLabel1.setText("Login ");

        jLabel2.setFont(new java.awt.Font("Times New Roman", 0, 18)); // NOI18N
        jLabel2.setText("UserID");

        jLabel3.setFont(new java.awt.Font("Times New Roman", 0, 18)); // NOI18N
        jLabel3.setText("Password");

        user.setFont(new java.awt.Font("Times New Roman", 0, 18)); // NOI18N
        user.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));
        user.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                userActionPerformed(evt);
            }
        });

        pass.setFont(new java.awt.Font("Times New Roman", 0, 18)); // NOI18N
        pass.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));

        jButton1.setFont(new java.awt.Font("Times New Roman", 0, 18)); // NOI18N
        jButton1.setText("Cancel");
        jButton1.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jButton1MouseClicked(evt);
            }
        });

        jButton2.setFont(new java.awt.Font("Times New Roman", 0, 18)); // NOI18N
        jButton2.setText("Login ");
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton2ActionPerformed(evt);
            }
        });

        jLabel4.setFont(new java.awt.Font("Times New Roman", 1, 24)); // NOI18N
        jLabel4.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        jLabel4.setText("X");
        jLabel4.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));
        jLabel4.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jLabel4MouseClicked(evt);
            }
        });

        jLabel5.setFont(new java.awt.Font("Times New Roman", 1, 24)); // NOI18N
        jLabel5.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
        jLabel5.setText("-");
        jLabel5.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));
        jLabel5.addMouseListener(new java.awt.event.MouseAdapter() {
            public void mouseClicked(java.awt.event.MouseEvent evt) {
                jLabel5MouseClicked(evt);
            }
        });

        javax.swing.GroupLayout jPanel3Layout = new javax.swing.GroupLayout(jPanel3);
        jPanel3.setLayout(jPanel3Layout);
        jPanel3Layout.setHorizontalGroup(
            jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel3Layout.createSequentialGroup()
                .addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(jPanel3Layout.createSequentialGroup()
                        .addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(jPanel3Layout.createSequentialGroup()
                                .addGap(32, 32, 32)
                                .addComponent(jLabel2)
                                .addGap(38, 38, 38))
                            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel3Layout.createSequentialGroup()
                                .addContainerGap()
                                .addComponent(jLabel3)
                                .addGap(18, 18, 18)))
                        .addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
                                .addGroup(jPanel3Layout.createSequentialGroup()
                                    .addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 80, javax.swing.GroupLayout.PREFERRED_SIZE)
                                    .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                                    .addComponent(jButton1))
                                .addComponent(pass, javax.swing.GroupLayout.PREFERRED_SIZE, 211, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addComponent(user, javax.swing.GroupLayout.PREFERRED_SIZE, 211, javax.swing.GroupLayout.PREFERRED_SIZE)))
                    .addGroup(jPanel3Layout.createSequentialGroup()
                        .addGap(159, 159, 159)
                        .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 141, javax.swing.GroupLayout.PREFERRED_SIZE)))
                .addContainerGap(116, Short.MAX_VALUE))
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel3Layout.createSequentialGroup()
                .addGap(0, 0, Short.MAX_VALUE)
                .addComponent(jLabel5, javax.swing.GroupLayout.PREFERRED_SIZE, 39, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(27, 27, 27)
                .addComponent(jLabel4, javax.swing.GroupLayout.PREFERRED_SIZE, 41, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(61, 61, 61))
        );
        jPanel3Layout.setVerticalGroup(
            jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel3Layout.createSequentialGroup()
                .addContainerGap()
                .addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel4, javax.swing.GroupLayout.PREFERRED_SIZE, 38, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel5, javax.swing.GroupLayout.PREFERRED_SIZE, 38, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                .addComponent(jLabel1)
                .addGap(64, 64, 64)
                .addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel2)
                    .addComponent(user, javax.swing.GroupLayout.PREFERRED_SIZE, 36, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(34, 34, 34)
                .addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jLabel3)
                    .addComponent(pass, javax.swing.GroupLayout.PREFERRED_SIZE, 34, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(51, 51, 51)
                .addGroup(jPanel3Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jButton2)
                    .addComponent(jButton1))
                .addContainerGap(115, Short.MAX_VALUE))
        );

        jPanel1.add(jPanel3);
        jPanel3.setBounds(170, 0, 450, 470);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, 621, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(0, 172, Short.MAX_VALUE))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(layout.createSequentialGroup()
                .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, 456, javax.swing.GroupLayout.PREFERRED_SIZE)
                .addGap(0, 0, Short.MAX_VALUE))
        );

        pack();
    }// </editor-fold>                        

    private void userActionPerformed(java.awt.event.ActionEvent evt) {                                     
        // TODO add your handling code here:
    }                                    

    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {                                         
        Connection conn=null;
        PreparedStatement pst=null;
        ResultSet rs=null;
        try{
        Class.forName("net.ucanaccess.jdbc.UcanaccessDriver");
        conn=DriverManager.getConnection("jdbc:ucanaccess://C:\\Users\\cnoye\\Documents//mydb.accdb");
        String sql="select * from Login where UserLogin='"+user.getText()+"' and Pasword='"+pass.getText()+"'";
        pst=conn.prepareStatement(sql);
        rs=pst.executeQuery();
        if(rs.next()) {
        JOptionPane.showMessageDialog(null,"Successfully Login...");
        Adminuser form = new Adminuser();
        form.setVisible(true);
        form.pack();
        form.setLocationRelativeTo(null);
        //close the current form(login form)
        this.dispose();

        }else{
        JOptionPane.showMessageDialog(null,"Invalid username or password...");
        }
        }catch(HeadlessException | ClassNotFoundException | SQLException e){
        JOptionPane.showMessageDialog(null,e);
        }

    }                                        

    private void jLabel5MouseClicked(java.awt.event.MouseEvent evt) {                                     

        this.setState(JFrame.ICONIFIED);

    }                                    

    private void jLabel4MouseClicked(java.awt.event.MouseEvent evt) {                                     
        System.exit(0);
    }                                    

    private void jButton1MouseClicked(java.awt.event.MouseEvent evt) {                                      
       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(loginPage.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (InstantiationException ex) {
            java.util.logging.Logger.getLogger(loginPage.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (IllegalAccessException ex) {
            java.util.logging.Logger.getLogger(loginPage.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
        } catch (javax.swing.UnsupportedLookAndFeelException ex) {
            java.util.logging.Logger.getLogger(loginPage.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 loginPage().setVisible(true);
            }
        });
    }

    // Variables declaration - do not modify                     
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JLabel jLabel2;
    private javax.swing.JLabel jLabel3;
    private javax.swing.JLabel jLabel4;
    private javax.swing.JLabel jLabel5;
    private javax.swing.JLabel jLabel6;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JPanel jPanel2;
    private javax.swing.JPanel jPanel3;
    private javax.swing.JPasswordField pass;
    private javax.swing.JTextField user;
    // End of variables declaration                   
}

------------------------------------------------------------------------
BUILD SUCCESS
------------------------------------------------------------------------
Total time:  3.806 s
Finished at: 2020-12-02T18:35:26Z
----------------------------------------
java—在NetBeans12.0中，输出控制台显示build successful，但即使给定时间也没有输出

暂无答案！

相关问题

热门标签

最新问答
