Permission denied trying to access file via terminal

[Valentine Wiggins]

I'm trying to compile code in two different packages. It's super simple code - literally just packagea with ClassA, which does nothing, and packageb, which imports packagea.ClassA & is supposed to print a message. I'm getting this error message:

-bash: tmp/packagea/ClassA.java: Permission denied

No idea why. Any ideas?

[Valentine Wiggins]

Here's my specific code:

This is named ClassA.java and is in a folder named packagea.

package packagea;
public class ClassA {}

This is named ClassB.java and is in a folder named packageb.

package packageb;
import packagea.ClassA;
public class ClassB {
public static void main(String[] args){
classA a;
System.out.println("Got it");
}
}

Both packagea and packageb are in a folder named tmp.

[Knute Snortum]

I'm getting this error message:

Doing what?  Meaning, what did you execute and where?

-bash: tmp/packagea/ClassA.java: Permission denied  

This looks like a Bash shell error.  Are you trying to execute the .java file?  Because that won't work; you need to compile it with javac first.

[Valentine Wiggins]

Knute Snortum wrote:

I'm getting this error message:

Doing what?  Meaning, what did you execute and where?

Ok - I tried again and now I'm getting a different error. This is exactly what I typed in, and the code is what I posted above.

Valentines-MacBook-Air:Desktop Valentine$ javac tmp/packagea/ClassA.java tmp/packageb/ClassB.java;
tmp/packageb/ClassB.java:5: error: cannot find symbol
classA a;
^
 symbol:   class classA
 location: class ClassB
1 error

[Valentine Wiggins]

Noticed that I had  classA instead of ClassA. So now it compiles, but sends an error message saying it can't find the main for ClassB.

Valentines-MacBook-Air:Desktop Valentine$ javac tmp/packagea/ClassA.java tmp/packageb/ClassB.java;
Valentines-MacBook-Air:Desktop Valentine$ java tmp/packageb.ClassB;
Error: Could not find or load main class tmp.packageb.ClassB

[Jeanne Boyarsky]

Why not cd into the "tmp" directory so you don't have to deal with the slashes?

IN any case, you need to specify the classpath when you run ClassB so Java knows where to look for ClassA. For example:

javac -cp "." packagea/ClassA.java javac -cp "." packageb/ClassB.java java -cp "." packageb/ClassB