Stand-alone Java code formatter/beautifier/pretty printer?

Answer 1

JIndent (Commercial) does what you want want:

http://www.jindent.com/

I've also used Jalopy in the past to do this, it's open source:

http://jalopy.sourceforge.net/

EDIT: I will note that Jalopy is fairly old and there doesn't seem to be any recent updates to it. I'm not quite sure how it will work with Java 5/6. You might want to look at Jacobe instead:

http://www.tiobe.com/index.php/content/products/jacobe/Jacobe.html

There's also a more complete list of formatters here on Roedy Green's site:

http://mindprod.com/jgloss/beautifier.html

Answer 2

Jalopy may be of interest. It will plug into Ant and thus is independent of your IDE.

Astyle may also be useful. It's open source (like Jalopy) but written in C++. It's geared towards formatting Java/C/C++ and can be batch-driven (via shell scripts or similar)

Answer 3

I use Dr. Java to code in and with a quick ctrl+A + tab it formats it all nicely with syntax highlighting. Ive used it on a Mac and Windows, dont know if they support linux. And it's open source, stand alone, and free.

Answer 4

I also used a lot the PrettyPrinter embedded inside JRefactory (http://jrefactory.sourceforge.net/). I discovered it through its plugin for JEdit. I appreciated it as it had the better javadoc coverage I ever saw.

Unfortunately it seems dead (no evolution since 2004) and actually it does not support Java5.

By the way I confirm that Triemax is a commercial suite based on dead open-source Jalopy.

Answer 5

You can also run Eclipse reformatter from command line. Check out this blog entry

Answer 6

Try "Jacobe Code Beautifier":

http://www.tiobe.com/index.php/content/products/jacobe/Jacobe.html

The personal edition is free.

Answer 7

UPDATE: Per my new understanding based on an incorrect bug report I filed: https://bugs.eclipse.org/bugs/show_bug.cgi?id=325289 The OpenMRSFormatter.xml file actually has to be a preferences file and not an XML file.

You can find such a file here: https://bugs.eclipse.org/bugs/attachment.cgi?id=178874

or convert any XML exported formatter file with: cat formatter.xml | grep setting | sed 's/@@' > formatter.asprefs

Thank you Misha

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Here is something that I made using Eclipse 3.6 jars. It is Java-only, command line, and should be cross platform compatible:

http://www.sendspace.com/file/nm4ptt

There is a shell script that uses a bundled OpenMRSCodeFormatter.xml file. The sample output:

misha@misha-d630:~/openmrs-code-formatter$ cat ../Test.java
public class Test {



public a() {
System.out.println("! I did not format this right!");
}



}misha@misha-d630:~/openmrs-code-formatter$ ./format.sh ../Test.java
Configuration Name: OpenMRSFormatter.xml
Starting format job ...
Done.
cat ../misha@misha-d630:~/openmrs-code-formatter$ cat ../Test.java
public class Test {

        public a() {
                System.out.println("! I did not format this right!");
        }

}misha@misha-d630:~/openmrs-code-formatter$ 

This is based on the post here: http://www.peterfriese.de/formatting-your-code-using-the-eclipse-code-formatter/

As I do not know how long the link will stay up, I will describe the contents below.

This is based on Eclipse 3.6 Helios distribution. I used the one for Linux x86, but it should work for any version, as I did not use any (to my knowledge) platform specific JAR files.

The contents of the tar archive are:

misha@misha-d630:~$ tar tvjf openmrs-code-formatter.tar.bz2  | sort 
tar: Record size = 8 blocks
drwxr-xr-x misha/misha       0 2010-09-11 19:32 openmrs-code-formatter/plugins/
drwxr-xr-x misha/misha       0 2010-09-11 19:33 openmrs-code-formatter/configuration/org.eclipse.equinox.simpleconfigurator/
drwxr-xr-x misha/misha       0 2010-09-11 19:38 openmrs-code-formatter/configuration/
-rw-r--r-- misha/misha  101957 2010-09-11 19:03 openmrs-code-formatter/plugins/org.eclipse.equinox.common_3.6.0.v20100503.jar
-rw-r--r-- misha/misha  107210 2010-09-11 19:32 openmrs-code-formatter/plugins/org.eclipse.core.commands_3.6.0.I20100512-1500.jar
-rw-r--r-- misha/misha  111098 2010-09-11 19:06 openmrs-code-formatter/plugins/org.eclipse.equinox.preferences_3.3.0.v20100503.jar
-rw-r--r-- misha/misha 1147220 2010-09-11 18:45 openmrs-code-formatter/plugins/org.eclipse.osgi_3.6.0.v20100517.jar
-rw-r--r-- misha/misha    1812 2010-09-11 19:33 openmrs-code-formatter/configuration/org.eclipse.equinox.simpleconfigurator/bundles.info
-rw-r--r-- misha/misha  182596 2010-09-11 19:05 openmrs-code-formatter/plugins/org.eclipse.equinox.registry_3.5.0.v20100503.jar
-rw-r--r-- misha/misha  248071 2010-09-11 19:29 openmrs-code-formatter/plugins/org.eclipse.text_3.5.0.v20100601-1300.jar
-rw-r--r-- misha/misha     265 2010-09-11 19:21 openmrs-code-formatter/configuration/config.ini
-rw-r--r-- misha/misha   28554 2010-09-11 19:34 openmrs-code-formatter/OpenMRSFormatter.xml
-rw-r--r-- misha/misha   39331 2010-09-11 19:17 openmrs-code-formatter/plugins/org.eclipse.equinox.simpleconfigurator_1.0.200.v20100503.jar
-rw-r--r-- misha/misha 4504121 2010-09-11 19:27 openmrs-code-formatter/plugins/org.eclipse.jdt.core_3.6.0.v_A58.jar
-rw-r--r-- misha/misha   47023 2010-09-11 18:42 openmrs-code-formatter/plugins/org.eclipse.equinox.launcher_1.1.0.v20100507.jar
-rw-r--r-- misha/misha   52710 2010-09-11 19:29 openmrs-code-formatter/plugins/org.eclipse.core.filesystem_1.3.0.v20100526-0737.jar
-rw-r--r-- misha/misha 6451211 2010-09-11 19:32 openmrs-code-formatter/plugins/com.ibm.icu_4.2.1.v20100412.jar
-rw-r--r-- misha/misha   70928 2010-09-11 19:01 openmrs-code-formatter/plugins/org.eclipse.core.runtime_3.6.0.v20100505.jar
-rw-r--r-- misha/misha  769898 2010-09-11 19:29 openmrs-code-formatter/plugins/org.eclipse.core.resources_3.6.0.v20100526-0737.jar
-rw-r--r-- misha/misha   83817 2010-09-11 19:07 openmrs-code-formatter/plugins/org.eclipse.equinox.app_1.3.0.v20100512.jar
-rw-r--r-- misha/misha   86986 2010-09-11 19:31 openmrs-code-formatter/plugins/org.eclipse.core.expressions_3.4.200.v20100505.jar
-rw-r--r-- misha/misha   90837 2010-09-11 19:05 openmrs-code-formatter/plugins/org.eclipse.core.jobs_3.5.0.v20100515.jar
-rw-r--r-- misha/misha   91928 2010-09-11 19:06 openmrs-code-formatter/plugins/org.eclipse.core.contenttype_3.4.100.v20100505-1235.jar
-rwxr-xr-x misha/misha     111 2010-09-11 19:39 openmrs-code-formatter/format.sh

Relevant jars in plugins directory are taken directly from Eclipse 3.6 plugins directory.

The contents of config.ini are:

misha@misha-d630:~$ more openmrs-code-formatter/configuration/config.ini 
osgi.bundles=reference\:file\:org.eclipse.equinox.simpleconfigurator_1.0.200.v20100503.jar@1\:start
org.eclipse.equinox.simpleconfigurator.configUrl=file\:org.eclipse.equinox.simpleconfigurator/bundles.info
eclipse.application=org.eclipse.jdt.core.JavaCodeFormatter

format.sh is:

misha@misha-d630:~$ more openmrs-code-formatter/format.sh 
#!/bin/bash
java -jar plugins/org.eclipse.equinox.launcher_1.1.0.v20100507.jar -config OpenMRSFormatter.xml $*

and OpenMRSFormatter.xml is available here: http://wiki.openmrs.org/download/attachments/3346087/OpenMRSFormatter.xml?version=1&modificationDate=1282168038000

I believe that should be sufficient to reproduce.

An interesting project based on the same concept is found here: http://code.google.com/p/maven-java-formatter-plugin/

Thank you Misha