newjframe.java

java netbeans 学习程序合集

/*
 * NewJFrame.java
 *
 * Created on 2007年11月22日, 下午9:53
 */

package org.Adam;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.Vector;

/**
 *
 * @author  Administrator
 */
public class NewJFrame extends javax.swing.JFrame {
    ResultSet rs=null;
    /** Creates new form NewJFrame */
    public NewJFrame() {
        initComponents();
        this.setLocationRelativeTo(this);
        init();
        init1();
    }
    public void init(){
        Vector a=new Vector();
        DB dB=new DB();
        String sql="select distinct 科目 from 课程明细";
        String b=null;
        rs=dB.GetClass(sql);
        try {
            while(rs.next()){
            b=rs.getString("科目");
            a.addElement(b);
            } 
        }catch (SQLException ex) {
            ex.printStackTrace();
        }
        this.jList1.setListData(a);
    }
    public void init1(){
         DB dB=new DB();
        String sql="select  distinct 科目 from 课程明细";
        String b=null;
        rs=dB.GetClass(sql);
        try {
            while(rs.next()){
            b=rs.getString("科目");
           this.jComboBox2.addItem(b);
            }
            } catch (SQLException ex) {
            ex.printStackTrace();
        }
        
    }
    /** 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.
     */
    // <editor-fold defaultstate="collapsed" desc=" 生成的代码 ">//GEN-BEGIN:initComponents
    private void initComponents() {
        jComboBox1 = new javax.swing.JComboBox();
        jTextField1 = new javax.swing.JTextField();
        jPasswordField1 = new javax.swing.JPasswordField();
        jButton1 = new javax.swing.JButton();
        jButton2 = new javax.swing.JButton();
        jScrollPane1 = new javax.swing.JScrollPane();
        jList1 = new javax.swing.JList();
        jComboBox2 = new javax.swing.JComboBox();

        jComboBox1.setModel(new javax.swing.DefaultComboBoxModel(new String[] { "Item 1", "Item 2", "Item 3", "Item 4" }));

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

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

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

        jScrollPane1.setViewportView(jList1);

        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(40, 40, 40)
                .add(jButton1)
                .add(34, 34, 34)
                .add(jButton2)
                .addContainerGap(149, Short.MAX_VALUE))
            .add(org.jdesktop.layout.GroupLayout.TRAILING, layout.createSequentialGroup()
                .add(88, 88, 88)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING, false)
                    .add(org.jdesktop.layout.GroupLayout.LEADING, jPasswordField1)
                    .add(org.jdesktop.layout.GroupLayout.LEADING, jTextField1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 90, Short.MAX_VALUE))
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, 82, Short.MAX_VALUE)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING, false)
                    .add(org.jdesktop.layout.GroupLayout.TRAILING, layout.createSequentialGroup()
                        .add(jComboBox2, 0, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
                        .addContainerGap())
                    .add(org.jdesktop.layout.GroupLayout.TRAILING, layout.createSequentialGroup()
                        .add(jScrollPane1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 102, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                        .add(23, 23, 23))))
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(layout.createSequentialGroup()
                .add(61, 61, 61)
                .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
                    .add(layout.createSequentialGroup()
                        .add(jScrollPane1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                        .add(69, 69, 69)
                        .add(jComboBox2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                        .addContainerGap())
                    .add(layout.createSequentialGroup()
                        .add(jTextField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                        .add(20, 20, 20)
                        .add(jPasswordField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, 99, Short.MAX_VALUE)
                        .add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                            .add(jButton1)
                            .add(jButton2))
                        .add(96, 96, 96))))
        );
        pack();
    }// </editor-fold>//GEN-END:initComponents

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
// TODO 将在此处添加您的处理代码：
        String name=this.jTextField1.getText();
        String password=new String(this.jPasswordField1.getPassword());
        String p=null;
        DB dB=new DB();
       String sql="select UserPassword from PasswordText where UserName='"+name+"' ";
       rs=dB.SelectpassDb(sql);
     try {
            rs.next();
            p=rs.getString("UserPassword");
            
            } catch (SQLException ex) {
            ex.printStackTrace();
        }
       System.out.println(p);
       if(p.equals(password)){
                System.out.println("OK");
            }else{
                System.out.println("ERROR");
            }
    }//GEN-LAST:event_jButton1ActionPerformed

    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton2ActionPerformed
// TODO 将在此处添加您的处理代码：
        System.exit(0);
    }//GEN-LAST:event_jButton2ActionPerformed
    
    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new NewJFrame().setVisible(true);
            }
        });
    }
    
    // 变量声明 - 不进行修改//GEN-BEGIN:variables
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JComboBox jComboBox1;
    private javax.swing.JComboBox jComboBox2;
    private javax.swing.JList jList1;
    private javax.swing.JPasswordField jPasswordField1;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTextField jTextField1;
    // 变量声明结束//GEN-END:variables
    
}