I want to download c++ and Java environment where to go ?
what web site what link , thank you.
if you are using Windows go to www.codeblocks.org and download codeblocks for C++
and for java download the Java JDK and install it and add it to you environment variables so that you can use it directly from the cmd
if you are using linux
install g++ using terminal sudo apt install g++ and use any text editor to write your code example VScode or gedit etc etc there are a lot
for java similarly install the Java JDK in linux also you can download the .deb file for debian based distro form oracle java website or just install using terminal.