Compile Java Files And External Lib Linux

Question

I've a Java project in IntelliJ which builds and executes successfully. Now I would like to package the code (i.e. package it so it can be executed in a linux environment).

The directory structure is:

../parser/src/com/test1/java
bash-4.2$ ls -R
external  Jparser  Main.java

./external:
java-json.jar

./Jparser:
JsonParser.class  JsonParser.java

So far I've executed javac -cp ../external/java-json.jar Parser.java

What is the next step? Is it class path of Parser.java to main?

Edit: I'm specifically interested to learn how to to the above in command line for better understanding of Java. I love gradle, maven, IDEs, but they all have sorts of black box magic which is often convenient but leaves the beginner user thinking they know Java builds....

Did you try https://stackoverflow.com/questions/1082580/how-to-build-jars-from-intellij-properly to build a jar (with dependencies, if you have ones)? — Roman Puchkovskiy, Jul 31 '17 at 18:55
@RomanPuchkovskiy thank you for the reference. I'd like to learn how to build it on linux CLi (as a learning experience), and thus remove the black magic of Jet Brains (although I love it). — Simply_me, Jul 31 '17 at 19:00
You can also create a runnable .jar with [Maven](https://stackoverflow.com/questions/574594/how-can-i-create-an-executable-jar-with-dependencies-using-maven?rq=1) or Gradle — Ivan Pronin, Jul 31 '17 at 19:10
Please refer to https://stackoverflow.com/questions/5194926/compiling-java-files-in-all-subfolders — James Jithin, Jul 31 '17 at 19:20

score 0 · Accepted Answer · answered Jul 31 '17 at 19:26

It is not clear whether Jparser is a package inside your main module, or it is a sub-module directory.

If this is a package inside your only module, then

javac -cp ../external/java-json.jar Main.java Jparser/JsonParser.java

jar cvf my.jar Main.class JsonParser

If this is a module, then I'd copy Main.java and JsonParser.java to another directory and then

javac -cp ../external/java-json.jar *.java

jar cvf my.jar *.class

Then to run it: java -cp my.jar:../external/java-json.jar Main

A better approach to organize the build would be to use Maven https://maven.apache.org/ or Ant http://ant.apache.org/ IDEA can generate Ant builds using Build->Generate Ant Build.

thank you for the answer. `Jparser` is a class I wrote executed by `Main` — Simply_me, Jul 31 '17 at 19:27
`./Jparser:` from this it can be seen that `Jparser` is a directory, so it cannot be a class, but it can be a package containing classes. — Roman Puchkovskiy, Aug 01 '17 at 08:59

Compile Java Files And External Lib Linux

1 Answers1