JAVA编程问题，图形用户界面编程

匿名用户2019.11.29回答importjava.awt.Container;importjava.awt.FlowLayout;importjava.awt.event.ActionEvent;importjava.awt.event.ActionListener;importjavax.swing.JFrame;importjavax.swing.JOptionPane;importjavax.swing.JPasswordField;importjavax.swing.JTextField;importjavax.swing.JButton;publicclassmi{privatestaticStringusername;privatestaticStringpassword;privatestaticJTextField[]t={newJTextField("账号：",8),newJTextField(10),newJTextField("密码：",8),newJPasswordField(10)};publicstaticvoidmain(Stringargs[]){JFrameapp=newJFrame("账号密码演示程序");app.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);app.setSize(280,120);Containerc=app.getContentPane();c.setLayout(newFlowLayout());t[0].setEditable(false);t[2].setEditable(false);for(inti=0;i<4;i++)c.add(t[i]);t[1].setText("");JButton[]b={newJButton("确定"),newJButton("重置")};c.add(b[0]);c.add(b[1]);app.setLocationRelativeTo(null);app.setVisible(true);b[1].addActionListener(newActionListener(){publicvoidactionPerformed(ActionEvente){t[1].setText("");t[3].setText("");}});//登录按钮加事件监听器b[0].addActionListener(newActionListener(){publicvoidactionPerformed(ActionEvente){username=t[1].getText();password=t[3].getText();//判断用户名密码是否正确if(username.equals("数字")&&password.equals("123")){JOptionPane.showMessageDialog(null,"登陆成功！","消息",JOptionPane.INFORMATION_MESSAGE);}else{JOptionPane.showMessageDialog(null,"用户名或密码错误！","错误",JOptionPane.ERROR_MESSAGE);}}});}}

匿名用户2017.11.29回答100RMB,晚上可以做。