Javac doesn't see classes from standart packages

Hi,
I've installed jdk1.6.0 on my computer, but when I'm trying to compile the following errors appear:
cannot find simbol
class io
package java
import java.io
JDK installed at directory: C:\Archivos de programa\Java\jdk1.6.0\
I've set next nvironmental vars:
JAVA_HOME = C:\Archivos de programa\Java\jdk1.6.0\;
Path = %JAVA_HOME%\bin;
but it still doesn't work.
can enybody help me please?

The import statement appears to be incorrect. It should either import the package,
import java.io.*; or specific classes, like
import java.io.file;

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