Sure you can! Some antivirus providers even provide firewall with them. If you want a stand-alone firewall, then I recommend going for COMODO Personal Firewall.
Insert the install disk, click install and follow the instructions. OR Download the program, save it somewhere you can find it, click the .exe file and follow the instructions.
Antivirus software is very important. Everywhere throughout the Internet, there are viruses, malware, spyware, adware and other very harmful things, and a good antivirus acts as a wall against these....
Depends on the kind of java you want to use. But most java applications require you to have a JVM. If it java programing developer then you will need java JDK e.g if you want to use net beans as...