Compiling java source code on linux

Question

I'm trying to compile my source code which divided into different packages. i wrote a sources text and list inside it all the paths of the java files. i also made a makefile and wrote the following lines:

compile: bin
    javac -d bin -cp biuoop-1.4.jar @sources.txt
run:
    java -cp biuoop-1.4.jar:bin Ass5Game 2 4
bin:
    mkdir bin

the biupoop is a built jar file i'm using.

after i use the make commend the computer says:

javac -d bin -cp biuoop-1.4.jar @sources.txt
javac: file not found: animations\Animation.java
Usage: javac <options> <source files>
use -help for a list of possible options
make: *** [compile] Error 2.

how do i compile the files in packages?

What is the current directory you issue the call from and where are the sources relative to that location? — hotzst
– hotzst, Commented May 24, 2016 at 9:15
Why are you using makefiles for java? It works I guess but there are build tools such as maven and gradle (more github.com/tkruse/build-bench ) that make building java projects far simpler. — zapl
– zapl, Commented May 24, 2016 at 9:18
i'm in the user directory, and i have a "src" file which inside it there are couple of packages. for example one of the paths is "animations\Animation.java". — yairabr
– yairabr, Commented May 24, 2016 at 9:20
That \ seems a little strange to me as on Linux the path separator is /. — Tobias Brösamle
– Tobias Brösamle, Commented May 24, 2016 at 9:21

T.J. Crowder · Accepted Answer · 2016-05-24 09:24:36Z

5

The key is in this error message:

javac: file not found: animations\Animation.java

Note the backslash. On *nix, paths are separated with slash (/), not backslash (\). If you change the \ in your sources.txt to / instead, it will work (assuming you're running this in the directory that animation is a subdirectory of).

Example run:

$ cat animation/Animation.java 
package animation;

public class Animation {
    public static final void main(String[] args) {
        System.out.println("Success");
    }
}
$ cat sources.txt 
animation/Animation.java
$ javac -d bin @sources.txt
$ java -cp bin animation.Animation
Success

edited May 24, 2016 at 9:24

answered May 24, 2016 at 9:18

T.J. Crowder

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2 Comments

yairabr Over a year ago

the problem was that i needed to add the following line:find src -name "*.java" > sources.txt on the makfile

T.J. Crowder Over a year ago

@yairabr: Yup. That will, indirectly, do what I said above.

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