Do you want to convert ints to chars?:
int yourInt = 33;
char ch = (char) yourInt;
System.out.println(yourInt);
System.out.println(ch);
// Output:
// 33
// !
Or do you want to convert ints to Strings?
int yourInt = 33;
String str = String.valueOf(yourInt);
Or what is it that you mean?