No compiler after installation ?

I had installed "j2sdk-1_4_2-beta-windows-i586" and after installation I had noticed that there is no javac.exe file. I could not type the javac command in dos shell due to this. am i missing something here ? I had last programmed in java more than a year back and now I am confused why there is no javac. someone please tell me what i am missing here. I am using a windows xp machine .

[400 byte] By [ncdevelopera] at [2007-12-18]