[antlr-interest] problem with class CommonTree

[ankit.mehrotra at tcs.com]

Hi all,

I have started antlr a couple of hours back. I was working through the 
example of AST walk through, where on compiling the files I am getting an 
error,

ASTExprParser.java:82: cannot find symbol
symbol  : method toStringtree()
location: class org.antlr.runtime.tree.CommonTree
 System.out.println(((CommonTree)stat1.tree).toStringtree());

                                       ^
1 error


All I have are the jar files for the 
libraries(antlr-3.0.1,antlr-2.7.7,antlr-runtime-3.0.1 and 
stringTemplate-3.0b1). 
How should I go about removing this error.

Thanks
Ankit
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