Javac compiler Error - cannot resolve symbol - symbol StringBuilder?

Question

Hi ,
I am using hp - ux system with java version "1.4.2.06". when i try to compile a program called CharSequenceDemo.java which is found in the java tutorials at this link
[CharSequenceDemo.java|http://java.sun.com/docs/books/tutorial/java/IandI/examples/CharSequenceDemo.java]
i get the following error:
$/opt/java1.4/bin/javac CharSequenceDemo.java
CharSequenceDemo.java:38: cannot resolve symbol
symbol : class StringBuilder
location: class CharSequenceDemo
StringBuilder sub =
^
CharSequenceDemo.java:39: cannot resolve symbol
symbol : class StringBuilder
location: class CharSequenceDemo
new StringBuilder(s.subSequence(fromEnd(end), fromEnd(start)));
^
CharSequenceDemo.java:44: cannot resolve symbol
symbol : class StringBuilder
location: class CharSequenceDemo
StringBuilder s = new StringBuilder(this.s);
^
CharSequenceDemo.java:44: cannot resolve symbol
symbol : class StringBuilder
location: class CharSequenceDemo
StringBuilder s = new StringBuilder(this.s);
^
4 errors
Please help on how to compile this program.

Answer 1

I've been struggling with the same issue. The difference is that my system says I'm using version 1.6.0_05. I've tried running jucheck.exe. It tells me I've got the latest version installed.
Here is the code:
import java.lang.StringBuilder;
import java.util.Formatter;
   public class UsingFormatter {
     public static void main(String[] args) {
       if (args.length != 1) {
         System.err.println("usage: " +
           "java format/UsingFormatter <format string>");
         System.exit(0);
       String format = args[0];
       StringBuilder stringBuilder = new StringBuilder();
       Formatter formatter = new Formatter(stringBuilder);
       formatter.format("Pi is approximately " + format +
         ", and e is about " + format, Math.PI, Math.E);
       System.out.println(stringBuilder);
   }When I type javac UsingFormatter.java, I get:
UsingFormatter.java:1: cannot resolve symbol
symbol : class StringBuilder
location: package lang
import java.lang.StringBuilder;
^
UsingFormatter.java:2: cannot resolve symbol
symbol : class Formatter
location: package util
import java.util.Formatter;
^
UsingFormatter.java:14: cannot resolve symbol
symbol : class StringBuilder
location: class UsingFormatter
StringBuilder stringBuilder = new StringBuilder();
^
UsingFormatter.java:14: cannot resolve symbol
symbol : class StringBuilder
location: class UsingFormatter
StringBuilder stringBuilder = new StringBuilder();
^
UsingFormatter.java:15: cannot resolve symbol
symbol : class Formatter
location: class UsingFormatter
Formatter formatter = new Formatter(stringBuilder);
^
UsingFormatter.java:15: cannot resolve symbol
symbol : class Formatter
location: class UsingFormatter
Formatter formatter = new Formatter(stringBuilder);
^
6 errors
The compiler refuses to recognize the symbols StringBuilder and Formatter.
I have spent hours googling for an answer and trying every suggestion. Nothing works, not even the one about dropping the computer from the rooftop.
Ultimately, what I'm trying to accomplish (in a different program) is to use a text file as a form letter template and replace the %s placeholders with stings from my form object.
Any advice?
Edited by: javastudent_99 on Apr 3, 2008 1:48 PM