How to avoid “Security - A prepared statement is generated from a nonconstant String” FindBugs Warning

Question

I am working on a project that has a piece of code like the one below:

String sql = \"SELECT MAX(\" + columnName + \") FROM \" + tableName;                
Prepa         


        

Answer 1

private static final String SQL = "SELECT MAX(?) FROM ?";
PreparedStatement ps = connection.prepareStatement(sql);
ps.preparedStatement.setInt(1,columnName);
ps.preparedStatement.setString(2,tableName);

if you are using prepared statement, then in parameter should be a final string and parameters should be added later using setInt, setString methods.

this will resolve the findbug warning.