Add parts to build the codeql database in steps and provide log for comparison

session/AddUser.java

@@ -1,47 +0,0 @@
-import java.sql.Connection;
-import java.sql.DriverManager;
-import java.sql.SQLException;
-
-break!!!
-
-public class AddUser {
-    public static Connection connect() {
-        Connection conn = null;
-        try {
-            String url = "jdbc:sqlite:users.sqlite";
-            conn = DriverManager.getConnection(url);
-            System.out.println("Connected...");
-        } catch (SQLException e) {
-            System.out.println(e.getMessage());
-        }
-        return conn;
-    }
-
-    static String get_user_info() {
-        System.out.println("Enter name:");
-        return System.console().readLine();
-    }
-
-    static void write_info(int id, String info) {
-        try (Connection conn = connect()) { 
-            String query = String.format("INSERT INTO users VALUES (%d, '%s')", id, info);
-            conn.createStatement().executeUpdate(query);
-            System.err.printf("Sent: %s", query);
-        } catch (SQLException e) {
-            System.out.println(e.getMessage());
-        }
-    }
-    
-    static int get_new_id() {
-        return (int)(Math.random()*100000);
-    }
-
-    public static void main(String[] args) {
-        String info;
-        int id;
-
-        info = get_user_info();
-        id = get_new_id();
-        write_info(id, info);
-    }
-}

session/simple.ql

@@ -0,0 +1,13 @@
+/**
+ * @name simple test
+ * @description simple test
+ * @kind problem
+ * @id cpp/simple
+ * @problem.severity warning
+ */
+
+import java
+
+from Call read
+where read.getCallee().getName() = "readLine"
+select read, "Found readline"