I could not install the jenkins, below is the step by step that realized:
1) Downloaded the jenkins.war file that is in the folder C:\Users\Rafael\Downloads
2) Entered at the command prompt, and accessed the folder in which it is and then ran the command java-jar jenkins.war
3) It was extracted successfully. All files are created.
4) When I access the address localhost: 8080 or meu_ip: 8080 does not work.
What am I doing wrong?
Note: the same process above, I did on wamp www folder also, but also did not work.