ADD file via upload

src/User.java

@@ -0,0 +1,42 @@
+/**
+ * 用户类，用于管理账户信息
+ */
+public class User {
+    private String username;
+    private String password;
+    private String userType; // 小学、初中、高中
+    
+    public User(String username, String password, String userType) {
+        this.username = username;
+        this.password = password;
+        this.userType = userType;
+    }
+    
+    public String getUsername() {
+        return username;
+    }
+    
+    public String getPassword() {
+        return password;
+    }
+    
+    public String getUserType() {
+        return userType;
+    }
+    
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) return true;
+        if (obj == null || getClass() != obj.getClass()) return false;
+        User user = (User) obj;
+        return username.equals(user.username) && password.equals(user.password);
+    }
+    
+    @Override
+    public String toString() {
+        return "User{" +
+                "username='" + username + '\'' +
+                ", userType='" + userType + '\'' +
+                '}';
+    }
+}