Java: jsp sql debugging

To check sql codes, put following codes on jsp page:
//
// Put following codes on the top of page(remove //)
//
// page import="java.io.File"
// page import="java.io.FileInputStream"
// page import="java.io.FileOutputStream"
// page import="java.io.FileReader"
// page import="java.io.FileWriter"
//
// ------------------------------------
//
// build sql string here
//
// ------------------------------------
//
// Debug
//
BufferedWriter fout=new BufferedWriter(new FileWriter("c:/temp/debug/debug.txt",true));
fout.write(sql.toString());
fout.newLine();
fout.close();