TYPO in javadoc.properties.

sishida@stones[135] javadoc
javadoc: No package or classes specified.
usage: " + program + " flags* [class | package]*
        -sourcepath <path> Colon-separated list of source-file directories
        -classpath <path> Synonym for -sourcepath
        -d <directory> Destination directory for output files
        -doctype <type> Type of documentation to generate (default: HTML)
        -version Include @version paragraphs
        -nodeprecated Exclude @deprecated paragraphs
        -author Include @author paragraphs
        -noindex Do not generate method and field index
        -notree Do not generate class hierarchy
        -J<flag> Pass <flag> directly to the runtime system
        -encoding <name> Source file encoding name
        -docendoding <name> Output encoding name
            ==^=====