Affects PMD Version:
6.20.0.
Rule:
LawOfDemeter
Description:
False negative. Object created elsewhere is not flagged within try-resource block but is flagged outside of it.
Code Sample demonstrating the issue:
package pmdtests;
import java.io.IOException;
import java.io.PrintWriter;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
// @WebServlet("/DbServlet")
public class DbServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
private static final String URL = "jdbc:derby:HomeDB";
private transient Connection link;
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
response.setContentType("text/HTML");
PrintWriter out = response.getWriter();
try (Statement statement = link.createStatement();
ResultSet results = statement.executeQuery("SELECT * FROM PhoneNums");) {
while (results.next()) {
out.println("<TR>");
out.println("<TD>");
out.println(results.getString("Surname"));
out.println("</TD>");
out.println("<TD>");
out.println(results.getString("Forenames"));
out.println("</TD>");
out.println("<TD>");
out.println(results.getString("PhoneNum"));
out.println("</TD>");
out.println("</TR>");
}
out.println("</TABLE>");
} catch (SQLException sqlEx) {
printHtmlSelectError(out);
return;
}
out.println("<BODY>");
out.println("</HTML>");
out.flush();
}
}Running PMD through: [CLI | Ant | Maven | Gradle | Designer | Other]
Affects PMD Version:
6.20.0.
Rule:
LawOfDemeter
Description:
False negative. Object created elsewhere is not flagged within try-resource block but is flagged outside of it.
Code Sample demonstrating the issue:
Running PMD through: [CLI | Ant | Maven | Gradle | Designer | Other]