TeacherUI modify

Teacher/src/main/java/com/cfive/classroom/teacher/SignIn.java

@@ -0,0 +1,47 @@
+package com.cfive.classroom.teacher;
+
+import com.formdev.flatlaf.FlatDarculaLaf;
+import com.formdev.flatlaf.FlatLightLaf;
+
+import javax.swing.*;
+import java.awt.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+
+public class SignIn {
+    private static final SignIn sigIn = new SignIn();
+    private static final JFrame frame = new JFrame("教师端");;
+    private JPanel rootJPanel;
+    private JButton login_Button;
+    private JTextField workerNo;
+    private JPasswordField password;
+
+    public static void main(String[] args) {
+        FlatLightLaf.setup();
+
+        frame.setContentPane(sigIn.rootJPanel);
+        frame.setSize(600,400);
+        frame.setLocationRelativeTo(null);
+        frame.setResizable(false);
+        sigIn.login_Button.addActionListener(new ActionListener() {
+            @Override
+            public void actionPerformed(ActionEvent e) {
+                if(!sigIn.workerNo.getText().isEmpty()&&!sigIn.password.getText().isEmpty()){
+                    ClassList classList = new ClassList();
+                    String test=sigIn.workerNo.getText().toString();
+                    classList.start(test);
+                    frame.setVisible(false);
+                }else{
+
+                    JOptionPane.showMessageDialog(null,"用户名和密码不能为空","提示！！",JOptionPane.ERROR_MESSAGE);
+                }
+
+            }
+        });
+
+        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
+        frame.setVisible(true);
+    }
+
+
+}