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

public class Bugged {

	public static void main(String[] args) throws SQLException {
		Connection con = DriverManager.getConnection("jdbc:mariadb://localhost:3306/database?user=user&password=password");
		ResultSet typeInfo = con.getMetaData().getTypeInfo();
		while(typeInfo.next()) {
			System.out.println(typeInfo.getString("TYPE_NAME") + ": " + typeInfo.getBoolean("UNSIGNED_ATTRIBUTE"));
		}
	}

}