How do you insert a carriage return into a string ?

Question

Hi,
I don't know how to insert a carriage return, \n ,into a string
without the carriage return being interpeted. I am trying to build
a string called queryVariable from the file below so that it equates
to the necessary format for JDBC to execute the query.
SQL script file:
declare @x datetime
select @x = null
exec OSVBAK01...demand_dump PRODUCT,FULL,@x
go     
required string format for query:
"declare @x datetime\n"+"select @x = null\n"+
"exec OSVBAK01...demand_dump PRODUCT,FULL,@x";     
void Readfile(String path, String infilename) {
try {
File file = new File(path + infilename);
     if (!file.exists()) {
     System.err.println("File not found");
     BufferedReader in = new BufferedReader
(new FileReader(file));
     String str;
     String queryVariable = "";
     StringBuffer sb = new StringBuffer();
     while ((str = in.readLine()) != null) {
     sb.append("\"").append(str).append("\n\"")
.append("+");                              
     in.close();
     queryVariable = sb.toString();
     System.out.println(queryVariable);
} catch (IOException e) {
     System.err.println(e.getCause());
queryVariable equates to the following after running the code above:
"declare @x datetime
"+"select @x = null
"+"exec OSVBAK01...demand_dump PRODUCT,FULL,@x
"+"go     
"+
Any assistance anyone could provide would be greatly appreciated.
Thanks for your time,
YAM-SSM

Answer 1

Interesting... that would mean, of course, that in the case of concatenating string literals (outside of loops, as they say), the compiler is optimizing the code to avoid the need for using StringBuffers internally. Actually, it's good to know this, as I wasn't aware of this optimization.
However, the post wasn't meant to be serious... I hoped that was obvious. Everyone's spouting off nearly the same thing for adding strings and line separators and whatever.