Problems in java

i have asked in newbies , because im new i have problems in java i havent seen any answer for almost a week so i need to know which version of java do i use for csound i have beeen able tu use blue but i want to use csound and i cant

C:\PROGRA~1\csound\bin>java csnd6.jar
Error: no se ha encontrado o cargado la clase principal csnd6.jar
Causado por: java.lang.ClassNotFoundException: csnd6.jar
i use windows 11 64 bits 8gb ram

The csnd6.jar isn’t meant to be called for execution but rather be used a library for development. What are you trying to do with Csound and Java?