"javac -d" - Specifying Output Directory

for example 

"c:\java\bin\javac.exe" -d c:\ therestofcommand

or

"c:\java\bin\javac.exe" "-d" "c:\\" therestofcommand

but from powershell you need ampersign (&) at the beginneng especially if they are rapped in (double) qoutes

& 'c:\java\bin\javac.exe' '-d' 'c:\' therestofcommand