Compile and export in java via Terminal

Question

I have a Java program in Eclipse on Mac currently, and I normally have to use multiple clicks just to export my code into a .jar file to test on my server. I would like to automate the process via terminal.

Basically, I compile my code usually by selecting the project

Export as Runnable JAR file
Select library handling: extract required libarires into generated JAR
Select export destination and hit done.

How can I do this via terminal? I assume this would first require me to compile the Java file, then to convert it to jar is a whole another step.

Help would be much appreciated.

AlexR · Accepted Answer · 2013-06-04 07:46:48Z

2

You can create shell script that does it. This technique is obsolete since ~1998. So, use one of popular build tools. If you are starting now take a look on Gradle. Although there are a lot of other tools: good old ant, maven, buildr, ivy etc.

answered Jun 4, 2013 at 7:46

AlexR

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Simon Curd · Accepted Answer · 2013-06-04 07:47:28Z

1

You can script all these activities using a build script. Several libraries exist for this, but Apache Ant is a good place to start. Ant build scripts can be run from command line or within eclipse, and will do all compilation, packaging and (some) deployment for you with a single command.

http://ant.apache.org/

answered Jun 4, 2013 at 7:47

Simon Curd

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anubhava · Accepted Answer · 2013-06-04 07:48:32Z

1

Create default entry point manifest file as in : http://docs.oracle.com/javase/tutorial/deployment/jar/appman.html
Open Terminal and create an executable jar file like this:

Sample Script:

#!/bin/bash

# set CLASSPATH if needed
cd workspace/src
javac -d . *.java
jar tf exported.jar .

edited Jun 4, 2013 at 7:48

answered Jun 4, 2013 at 7:44

anubhava

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11 Comments

Djon Over a year ago

Doesn't it need a Manifest?

raaj Over a year ago

What if i have .jar files that i rely on outside of the project folder?

anubhava Over a year ago

@Djon: Thanks, added that step as well.

Djon Over a year ago

@user1436508 You can set the Class-Path attribute in the Manifest.

anubhava Over a year ago

@user1436508: That's why I added that comment: # set CLASSPATH if needed

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