Using Terminal to program and test java.

See my notes here:
http://www.cems.uwe.ac.uk/~lrlang/javasoundmusic/index.html#worksheets

These worksheets will take you through the process of using Xcode to create Java programs.

The comment on not using a JDK is nonsensical. You MUST use a JDK to create a Java program! It probably means to say that you should not use an IDE. If so, that's also nonsense.

Bob

David Bixler wrote:
I bought a book on java and it says I should not use a JDK when first learning java.

I think they mean IDE, considering that Java is the JDK. And I agree with that idea, not just for Java, but for any language.

How do you go about setting up the computer to use terminal to write and compile a java program?

There isn't anything to setup. Just run Terminal and type "vi hello.java" or "nano hello.java". To compile, type "javac hello.java".

I know that’s pretty big question. I just need a link to some info on how to get started using terminal and java.

That is not necessarily a big question, just fundamental. Try Google. It becomes second nature after a couple of decades so I don't really know where to tell you to look. People do tend to have a big list of links, hopefully they can contribute some.

If I use a text editor how do I set up a path to it using javac?

It should already be in your path.

Where can I find or link to this kind of info?

Try Google. People like it. You should find many pages similar to this.

Running java is easy -

[dranta:~/tests] dir% javac testcpu.java
[dranta:~/tests] dir% java testcpu


will compile and run your simple programs.


[dranta:~/tests] dir% which javac
/usr/bin/javac
[dranta:~/tests] dir% which java
/usr/bin/java


shows links to javac and java in /usr/bin


[dranta:~/tests] dir% ls -l /usr/bin/javac
lrwxr-xr-x 1 root wheel 78 Mar 5 2007 /usr/bin/javac -> /System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK/Commands/javac

Before you do too much work, maybe create a new thread and explain what you did. It may be easy to fix. If you know what you're doing, you can change your short name pretty easily.

All your stuff is still there. Go into the /Users directory and rename the folder with your old name to be "old.broken". Then, rename the folder with your new name to be the same as your old name. Log out and log back in. With any luck, you will be back in business. Delete that "old.broken" folder when everything is working properly.