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Siu KWAN Yuen
Courses Plus Student 2,898 Points"Javac" <- command not found
I tried the code with my own bash, and it failed to compile the document
5 Answers
Steve Hunter
57,712 PointsIf you can compile in the IDE you must have the JDK installed.
The javac command isn't automatically usable at every command prompt or PowerShell. You need to add it to your environment variables and the path. Google that - it's easy to do.
Also, you can navigate to the folder location of javac.exe. Go to C:\Program Files\Java\jdk<version>\bin and run javac using a bash call like ./javac - that'll give you all its available options. You can add a path to the source file to compile it directly.
I hope that helps,
Steve.
Siu KWAN Yuen
Courses Plus Student 2,898 PointsI already used "javac" and it is still not working. It returns: bash: javac: command not found
Steve Hunter
57,712 PointsWhat OS are you using and have you installed the JDK?
Siu KWAN Yuen
Courses Plus Student 2,898 PointsWindon 10. I am not sure if I have installed JDK, but I have IDE on my computer.
Steve Hunter
57,712 PointsOK - which IDE?
Steve Hunter
57,712 PointsAs well as what IDE are you using, in PowerShell - what happens if you type java -version?
Siu KWAN Yuen
Courses Plus Student 2,898 PointsI think it's NetBeans IDE 8.2. I can compile files using IDE, but I am just curious about how he did it via the prompt stuff. I feel not confident if I cannot remake what I have been learned
Bartosz Piechaczek
1,876 PointsJava is a case-sensitive language. Use "javac" instead of "Javac".
Steve Hunter
57,712 PointsSadly, I tested this - Javac works just fine, as did javAC. I'm not sure that this is anything to do with Java being case sensitive, or otherwise, rather than the environment managing the terminal being ambivalent as to case.
Siu KWAN Yuen
Courses Plus Student 2,898 PointsWouldn't it slow your computer down? I had installed a virtual machine once but at that time I knew it would consume my computer resources, so I hesitated and decided not to use it.
Steve Hunter
57,712 PointsA VM will use a lot of resources - I use VMs for various reasons; they are very useful if a little resource hungry. Having a triple booted machine doesn't slow anything down, no. It only boots into one OS at a time. So, I use Windows for general use and Office applications and the familiarity! I use Fedora Core for development work and Kali Linux for penetration testing/ethical hacking. Only one OS is in use at once, although I have a Kali VM available in Fedora for instance when I want to run attacks against an Apache server running on Linux. The only resource the multiple booting takes up is disk space, so my 1TB drive is divided into 3 with a partition for each operating system.
Siu KWAN Yuen
Courses Plus Student 2,898 PointsIt is great having a super-computer to do everything we need. I feel like having a desktop as opposed to a notebook. It seems like notebooks commonly have smaller disk space and a higher price.
Steve Hunter
57,712 PointsI've got three machines. The desktop tower, as described and two laptops. One is a Macbook running OSX and Kali in a VM. It also dual boots into Kali Linux, quite effectively - that hard drive is large enough to cope. Macbook is not cheap, though. The third machine is a Windows laptop that I use to test vulnerability attacks against Windows.
The tower represents good value for money. If you get one without an OS and rely on Linux for free, that's very good value indeed.
Siu KWAN Yuen
Courses Plus Student 2,898 PointsSiu KWAN Yuen
Courses Plus Student 2,898 PointsThank you Steve. I guess it is the PATH or bin kind of problem, isn't it? I may as well just let it go; the problem seems too complicated.
Steve Hunter
57,712 PointsSteve Hunter
57,712 PointsYes, amending your
pathwill enable your to usejavacat any command prompt. But it is all a bit of a chore! You can probably use the java console inside Netbeans too? Or just stick to Workspaces!Siu KWAN Yuen
Courses Plus Student 2,898 PointsSiu KWAN Yuen
Courses Plus Student 2,898 PointsYou 're right. Sticking to workspaces is probably a good idea. I feel much solid knowing that the knowledge I learned is "reproducible", despite the fact that the linux things always stress me out. I once thought of buying a new computer and installing linux given that my computer isn't fast anymore.
Steve Hunter
57,712 PointsSteve Hunter
57,712 PointsWorkspaces will definitely do what you want it to as it is pre-loaded with everything you need.
This machine I use triple boots; one to Windows 10, one to Fedora Core Linux and another option to Kali Linux. It is useful to get proficient in Linux terminal but not essential. You will come across it at some point, though, especially if you want to manage web servers as many use Apache on Linux.