C:\>java -version
java version "1.5.0_07"
Java(TM)  2  Runtime Environment, Standard Edition (build  1 . 5 .0_07-b03)
Java HotSpot(TM) Client VM (build  1 . 5 .0_07-b03, mixed mode, sharing)

C:\>javac -version
'javac' is not recognized as an internal or external command,
operable program or batch file.

C:\>

C:\Program Files\Java\jdk1. 5 .0_07\bin

C:\Program Files\Java\jdk1. 5 .0_07\bin>javac -version
javac  1 . 5 .0_07
javac: no source files
Usage: javac <options> <source files>
where possible options include:
  -g                         Generate all debugging info
  -g:none                    Generate no debugging info
  -g:{lines,vars,source}     Generate only some debugging info
  -nowarn                    Generate no warnings
  -verbose                   Output messages about what the compiler is doing
  -deprecation               Output source locations where deprecated APIs are u
sed
  -classpath <path>          Specify where to find user  class  files
  -cp <path>                 Specify where to find user  class  files
  -sourcepath <path>         Specify where to find input source files
  -bootclasspath <path>      Override location of bootstrap  class  files
  -extdirs <dirs>            Override location of installed extensions
  -endorseddirs <dirs>       Override location of endorsed standards path
  -d <directory>             Specify where to place generated  class  files
  -encoding <encoding>       Specify character encoding used by source files
  -source <release>          Provide source compatibility with specified release

  -target <release>          Generate  class  files  for  specific VM version
  -version                   Version information
  -help                      Print a synopsis of standard options
  -X                         Print a synopsis of nonstandard options
  -J<flag>                   Pass <flag> directly to the runtime system


C:\Program Files\Java\jdk1. 5 .0_07\bin>