Question marks replacing with binding values

For dynamic query generate by hibernate contains ? marks , to run that query in SQL is difficult.

So this code replace question marks with corresponding binding values.

public class test {

 public static void main(String[] args) {

  File queryFile = new File("D:/a.txt");//file a conatin Query

  File valuesFile = new File("D:/b.txt"); //file b conatain binding values

  int ch;

  StringBuffer queryContent = new StringBuffer("");

  StringBuffer valuesContent = new StringBuffer("");

  FileInputStream queryFin = null;

  FileInputStream valueFin = null;

  try {

   queryFin = new FileInputStream(queryFile);

   while ((ch = queryFin.read()) != -1)

    queryContent.append((char) ch);

   queryFin.close();

   valueFin = new FileInputStream(valuesFile);

   while ((ch = valueFin.read()) != -1)

    valuesContent.append((char) ch);

   valueFin.close();

   int startIndex = 0;
  

   while (queryContent.indexOf("?") > 0) {

    int index1 = queryContent.indexOf("?");

    int index2 = valuesContent.indexOf("binding '", startIndex);
    if(index2<0){

     System.out.println("number of question marks and binding data not equal");

     return;

     }
    int index3 = valuesContent.indexOf("'", index2 + 9);

    String rep = valuesContent.substring(index2 + 9, index3);

    queryContent.replace(index1, index1 + 1, rep);

    startIndex = index3;

   }
   
   FileWriter fstream = new FileWriter("D:/out.txt");//output file

   BufferedWriter out = new BufferedWriter(fstream);

   out.write(queryContent.toString());

   out.close();

  }

  catch (Exception e) {

   System.out.println(e);

  }

  System.out.println(queryContent.toString());

 }

}