*
* Created on __DATE__, __TIME__
*/
import javax.swing.JOptionPane;
/**
*
* @author __USER__
*/
public class Main extends javax.swing.JFrame {
/** Creates new form Main */
public Main() {
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.
*/
//GEN-BEGIN:initComponents
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jPanel1 = new javax.swing.JPanel(); //標簽
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jButton1 = new javax.swing.JButton(); //登錄按鈕
jButton2 = new javax.swing.JButton(); //
jTextField1 = new javax.swing.JTextField(); //文本框
jTextField2 = new javax.swing.JTextField();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE); //關閉時的操作，即退出程序
setTitle("登錄界面"); //設置標題：歡迎使用股票管理系統
setResizable(false); //設置窗口不可調節大小
jLabel1.setFont(new java.awt.Font("微軟雅黑", 0, 18)); //設置標簽的字體
jLabel1
.setText("您好，請輸入信息");
jLabel2.setText("用戶名");
jLabel3.setText("用戶密碼");
jButton1.setText("登錄");
jButton1.addActionListener(new java.awt.event.ActionListener() { //采用匿名內部類來實現按鈕監聽功能
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jButton2.setText("退出");
jButton2.addActionListener(new java.awt.event.ActionListener() { //同上
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton2ActionPerformed(evt);
}
});
javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout( //層次布局管理器，下面n長的代碼，就是設置位置，自己看吧，呵呵，這個必須的，就不多寫了
jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout
.setHorizontalGroup(jPanel1Layout
.createParallelGroup(
javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(
javax.swing.GroupLayout.Alignment.TRAILING,
jPanel1Layout.createSequentialGroup()
.addContainerGap(159, Short.MAX_VALUE)
.addComponent(jLabel1).addGap(140, 140,
140))
.addGroup(
jPanel1Layout
.createSequentialGroup()
.addGap(110, 110, 110)
.addGroup(
jPanel1Layout
.createParallelGroup(
javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel2)
.addComponent(jLabel3))
.addGap(54, 54, 54)
.addGroup(
jPanel1Layout
.createParallelGroup(
javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(
jPanel1Layout
.createSequentialGroup()
.addComponent(
jTextField2,
javax.swing.GroupLayout.DEFAULT_SIZE,
191,
Short.MAX_VALUE)
.addGap(
112,
112,
112))
.addGroup(
jPanel1Layout
.createSequentialGroup()
.addComponent(
jTextField1,
javax.swing.GroupLayout.PREFERRED_SIZE,
191,
javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap())))
.addGroup(
jPanel1Layout
.createSequentialGroup()
.addGap(141, 141, 141)
.addComponent(
jButton1,
javax.swing.GroupLayout.PREFERRED_SIZE,
68,
javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(89, 89, 89)
.addComponent(
jButton2,
javax.swing.GroupLayout.PREFERRED_SIZE,
72,
javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(145, Short.MAX_VALUE)));
jPanel1Layout
.setVerticalGroup(jPanel1Layout
.createParallelGroup(
javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(
jPanel1Layout
.createSequentialGroup()
.addContainerGap()
.addComponent(jLabel1)
.addGap(55, 55, 55)
.addGroup(
jPanel1Layout
.createParallelGroup(
javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel2)
.addComponent(
jTextField1,
javax.swing.GroupLayout.PREFERRED_SIZE,
javax.swing.GroupLayout.DEFAULT_SIZE,
javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(41, 41, 41)
.addGroup(
jPanel1Layout
.createParallelGroup(
javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel3)
.addComponent(
jTextField2,
javax.swing.GroupLayout.PREFERRED_SIZE,
javax.swing.GroupLayout.DEFAULT_SIZE,
javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(43, 43, 43)
.addGroup(
jPanel1Layout
.createParallelGroup(
javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(
jButton1,
javax.swing.GroupLayout.PREFERRED_SIZE,
33,
javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(
jButton2,
javax.swing.GroupLayout.PREFERRED_SIZE,
33,
javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap(48, Short.MAX_VALUE)));
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().addComponent(
jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE,
javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addContainerGap()));
layout.setVerticalGroup(layout.createParallelGroup(
javax.swing.GroupLayout.Alignment.LEADING).addGroup(
layout.createSequentialGroup().addContainerGap().addComponent(
jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE,
javax.swing.GroupLayout.DEFAULT_SIZE,
javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE,
Short.MAX_VALUE)));
pack();
setLocationRelativeTo(null); //居中
}// </editor-fold>
//GEN-END:initComponents
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) { //事件處理，不建議這樣做
// TODO add your handling code here:
String name = this.jTextField1.getText().trim(); //獲得用戶名，去空格
String password = this.jTextField2.getText().trim(); //獲得密碼，去空格
if (name.equals("admin") && password.equals("123456")) { //如果符合條件.....其實這裏應該去和數據庫關聯，這是死代碼
// Showinformation sf=new Showinformation(); //我估計是另外壹個框架，就是登錄成功之後的框架
// sf.setVisible(true);
// sf.show(); //這個方法就直接秒殺，不用了，因為sf.setVisible(true)已經被調用了，這裏就多次壹舉了
} else { //用戶名或者密碼驗證失敗
JOptionPane.showMessageDialog(this, "用戶名或者密碼錯誤啦~", "提示", //提示框
JOptionPane.INFORMATION_MESSAGE);
this.jTextField1.setText(""); //清空輸入框
this.jTextField2.setText("");
}
}
private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) { //事件處理，其實可以將jButton1ActionPerformed放在壹起處理，只要獲得按鈕的標簽內容 （JButton）（evt.getSuorse()）.getText()就做對比就ko了
// TODO add your handling code here:
System.exit(0);
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() { //好方法，呵呵使用該方式的原因是：awt是單線程模式的，所有awt的組件只能在(推薦方式)事件處理線程中訪問，從而保證組件狀態的可確定性。java核心編程技術中每個實例基本都用到了
public void run() {
new Main().setVisible(true);
}
});
}
//GEN-BEGIN:variables
// 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.JPanel jPanel1;
private javax.swing.JTextField jTextField1;
private javax.swing.JTextField jTextField2;}
// End of variables declaration//GEN-END:variables
妳修改壹下吧，從記事本獲得用戶名判斷壹下就行了