具有“无法访问”错误的奇怪Java变量类型，但在可编译代码中

Question

While coding, I have ran into a type that "behaves" neither like a primitive nor Object in my NetBeans IDE. The type is IoBuffer from Apache MINA (but propabably the exact type has nothing to this question).

From my perspective:

• my project compiles well, despite that this type is used in lot places underneath
• my NetBeans don't recognize this type ( "cannot find symbol" hint when i wrote IoBuffer )
• I can't create IoBuffer variable/instance ( compile error: "cannot find symbol" )
• I can't invoke any method on that type, like toString .

Of course, this is a standard Java class, but it looks unusual from current perspective (Maven project of one of examples bundled with Red5 Media Server)

Simple invocation:

// videoData.getData() returns IoBuffer
videoData.getData().toString()

Causes hint & compile-time error:

org/red5/demos/oflaDemo/StreamMultiplexer.java:[89,30] error: cannot access IoBuffer

Same error if I write only videoData.getData() - hint in this case is The type od getData() is erroneous

What caused this situation?

Answer 1

Have you tried clearing netbeans cache? To clear cache: Shutdown Netbeans, rename %AppData%\\Local\\NetBeans\\Cache\\7.2\\index, restart, wait for background scanning to complete and try again...

Answer 2

Apologies if my answer isn't specific enough. If you can provide some more code, that may help.

I believe the best way is to recreate that particular project and re-import the dependencies. There's a number of people with seemingly similar errors: http://forum.ragezone.com/f566/netbeans-compile-error-713536/ http://www.moparscape.org/smf/index.php?topic=645055.0

If that doesn't work, try:

• Changing the java version you are using. ( http://www.java-forums.org/new-java/43174-constructor-cannot-find-symbol-compile-error.html )
• Clear your cache, delete all class files, recompile everything. ( http://www.coderanch.com/t/402221/java/java/Compiler-Error-find-symbol )
• Close and Open the NetBeans project.
• Load the project in a different IDE, say eclipse.

Let me know if it helps.