I want to create an Autoit script that can detect and install the java on pc

I want to create an Autoit script that can detect and install the java on pc
1) following the java, and do not install
it should automatically download the java (silent mode)
and install java (silent mode)
after installation of java and finish
I have to run mom xxx.jar

2) it has the Autoit scripts detect the java already installed on the PC
I have to run mom xxx.jar