exception in launching java application usinfg web start : request of jre < j2se

hello

when I try to launch my java application using web start since my web site I got an exception :
the application need a JRE platform version (version<J2se) which is not installed and java web start can't download it automatically so do it manually

how can i do it ?

hi
I fixed the problem I used a wrong jnlp file (with wrong code)
I just change the file