Question

我从http://www2.cs.tum.edu/projects/cup/下载了演示版我通过命令得到了parser.java：

java -jar bin/java-cup-11a.jar cup/parser.cup

但是当我通过以下方式编译parser.java时

javac -classpath lib/java-cup-11a-runtime.jar parser.java

结果是：

cspro@Think:~/Desktop/template$ javac -classpath lib/*.jar -d .  parser.java
parser.java:104: cannot find symbol
symbol  : class Parser
location: class Example.parser
      if (args.length==0) new Parser(new Scanner(System.in,sf),sf).parse();
                              ^
parser.java:104: java_cup.runtime.Scanner is abstract; cannot be instantiated
      if (args.length==0) new Parser(new Scanner(System.in,sf),sf).parse();
                                     ^
parser.java:105: cannot find symbol
symbol  : class Parser
location: class Example.parser
      else new Parser(new Scanner(new java.io.FileInputStream(args[0]),sf),sf).parse();
               ^
parser.java:105: java_cup.runtime.Scanner is abstract; cannot be instantiated
      else new Parser(new Scanner(new java.io.FileInputStream(args[0]),sf),sf).parse();
                      ^
Note: parser.java uses or overrides a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
4 errors

如何编译parser.java？

如何编译cup生成的java文件

0 个答案: