Check for a warning using a Connection object : SQLException Warning « Database « Java Tutorial

1. Java Tutorial
2. Database
3. SQLException Warning

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.SQLWarning;

public class Main {
  public static void main(String[] args) throws Exception {

      try {
        Connection conn = getConnection(); // get a java.sql.Connection object
        SQLWarning warning = conn.getWarnings();
        while (warning != null) {
            // process connection warning
            String message = warning.getMessage();
            String sqlState = warning.getSQLState();
            int errorCode = warning.getErrorCode();
            warning = warning.getNextWarning();
        }
    }
    catch (SQLException e) {
        // ignore the exception
    }
    finally {
      // close JDBC resources: ResultSet, Statement, Connection
    }
      
  }

  private static Connection getConnection() throws Exception {
    Class.forName("org.hsqldb.jdbcDriver");
    String url = "jdbc:hsqldb:mem:data/tutorial";

    return DriverManager.getConnection(url, "sa", "");
  }
}