找不到java.lang.Byte符号

Question

My program was running fine last time I ran it. I opened it today and now it is saying

symbol class Byte symbol not found for import java.lang.Byte;

I don't know where to look to troubleshoot this problem. I re-installed java .

I am running this on Netbeans on a Windows 7 64 bit machine.

I added an image showing that java.lang.Byte exists in my projects library but it gives me an error. It compiled with javac so I think its my netbeans setup. Also I can refer to java.lang.Boolean (two classes above my Byte class. Any more clues you guys can give?

Answer 1

Something is wrong with your java/IDE setup, java.lang.Byte is part of standard library, so should always be there. Check what is on the classpath and make sure you have the JAVA_HOME specified and java installed.

Answer 2

Note that you do not need to import anything that's in the java.lang package. The content of the java.lang package is always available automatically. Remove the import line from your source file.

Importing something from java.lang does not normally lead to an error message, however. Something must be wrong with your Java setup if you get an error like you say you do.