Using " in JSp

Question

In JSP, I want to have the following:
rs = st.executeQuery("select * from contacts where v='a' ");
But 'contacts' is actually stored in a String 'c', which makes it:
rs = st.executeQuery("select * from " + c + " where v='a' ");
which is wrong...
I know the correct one is:
rs = st.executeQuery("select * from \"" + c + "\" where v='a' ");
But can anybody explain how the \" works?

Answer 1

First you should move all of your jdbc code to a class, with that said:
this:
String c = "test";
"select * from " + c + " where v='a' ";will produce:
select * from test where v='a'
this:
String c = "test";
select * from \"" + c + "\" where v='a' ";
{code}
will produce:
select * from "test" where v='a'
{code}
{code}
is an escape character, telling Java to treat the character that follows it as a literal String