使用Bluecove编译和运行Java应用程序时出现问题（NoClassDefFoundError）

Question

I have this app that uses bluetooth, so I need both, bluecove and bluecove-gpl packages, when I run it in NetBeans I have no problem at all, and works perfectly fine. But I still can't compile and run from the command line (Ubuntu 11.04).

I'm using this line for compilation:

$ javac -Xlint:unchecked -classpath bluecove-2.1.0.jar:bluecove-gpl-2.1.0.jar Client.java

And it doesn't return errors and it generates a .class file

Then I try to run the .class file like this:

java -classpath bluecove-2.1.0.jar:bluecove-gpl-2.1.0.jar Client

But it returns a NoClassDefFoundError . Could not find the main class: SPPClient .

Why is this happening?

Answer 1

You probably need to add your current directory (or whatever directory your class files reside in) to the class path.

Try something like

java -classpath .:bluecove-2.1.0.jar:bluecove-gpl-2.1.0.jar Client

or

java -classpath bin:bluecove-2.1.0.jar:bluecove-gpl-2.1.0.jar Client

Answer 2

您需要在清单文件中具有主类定义：

Main-Class: classname