小编use*_*816的帖子

我是 Java 和 ANTLR 的初学者。我正在尝试在 Netbeans IDE 中使用 ANTLR。我试图运行一个示例示例，并且确实遵循了所需的所有重要步骤，例如设置环境变量，包括 jar 文件和修改 built.xml。

但是当我尝试清理和构建我的应用程序时，我收到以下错误：

Error: Could not find or load main class org.antlr.Tool

Java Result: 1
Created dir: ../NetBeansProjects/AntlrTestApp/build/empty
Created dir: ../NetBeansProjects/AntlrTestApp/build/generated-sources/ap-source-output

Compiling 1 source file to ../NetBeansProjects/AntlrTestApp/build/classes
../NetBeansProjects/AntlrTestApp/src/antlrtestapp/AntlrTestApp.java:24: error: cannot find symbol
    grammarLexer lexer = new grammarLexer(input);
  symbol:   class grammarLexer
  location: class AntlrTestApp

../NetBeansProjects/AntlrTestApp/src/antlrtestapp/AntlrTestApp.java:24: error: cannot find symbol
    grammarLexer lexer = new grammarLexer(input);
  symbol:   class grammarLexer
  location: class AntlrTestApp

../NetBeansProjects/AntlrTestApp/src/antlrtestapp/AntlrTestApp.java:26: error: cannot find symbol
    grammarParser parser = new grammarParser(tokens);
  symbol: …