Why I have this error: Unable to find package java.lang ???
I am a beginner here. I am trying to build the HDcookbook sourcecode in Mac system. But I don't know why I have the compile errors as follows:
[xlets.javac] Compiling 55 source files to /Users/nikki/Documents/hdcookbook/xlets/hdcookbook_discimage/build/grin_library
[xlets.javac] Fatal Error: Unable to find package java.lang in classpath or bootclasspath
/Users/nikki/Documents/hdcookbook/build.xml:11: The following error occurred while executing this line:
/Users/nikki/Documents/hdcookbook/xlets/hdcookbook_discimage/build.xml:117: Compile failed; see the compiler error output for details.
Please give me some suggestions. Thanks!!!