Develop Reference

I'm trying to run a code on netbeans but it kept saying Command execution failed

cd /Users/merhawihaile/NetBeansProjects/mavenproject2; JAVA_HOME=/Library/Java/JavaVirtualMachines/jdk-13.0.1.jdk/Contents/Home "/Applications/NetBeans/Apache NetBeans 11.2.app/Contents/Resources/NetBeans/netbeans/java/maven/bin/mvn" "-Dexec.args=-classpath %classpath javaapplication1.Main" -Dexec.executable=/Library/Java/JavaVirtualMachines/jdk-13.0.1.jdk/Contents/Home/bin/java process-classes org.codehaus.mojo:exec-maven-plugin:1.5.0:exec
Scanning for projects...
Building mavenproject2 1.0-SNAPSHOT
--- maven-resources-plugin:2.6:resources (default-resources) # mavenproject2 ---
Using 'UTF-8' encoding to copy filtered resources.
skip non existing resourceDirectory /Users/merhawihaile/NetBeansProjects/mavenproject2/src/main/resources
--- maven-compiler-plugin:3.1:compile (default-compile) # mavenproject2 ---
Nothing to compile - all classes are up to date
--- exec-maven-plugin:1.5.0:exec (default-cli) # mavenproject2 ---
File does not exist
Command execution failed.
org.apache.commons.exec.ExecuteException: Process exited with an error: 255 (Exit value: 255)
at org.apache.commons.exec.DefaultExecutor.executeInternal(DefaultExecutor.java:404)
at org.apache.commons.exec.DefaultExecutor.execute(DefaultExecutor.java:166)
at org.codehaus.mojo.exec.ExecMojo.executeCommandLine(ExecMojo.java:764)
at org.codehaus.mojo.exec.ExecMojo.executeCommandLine(ExecMojo.java:711)
at org.codehaus.mojo.exec.ExecMojo.execute(ExecMojo.java:289)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:207)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:863)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:288)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:199)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:567)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
BUILD FAILURE
Total time: 1.443 s
Finished at: 2020-02-19T19:58:04-05:00
Final Memory: 9M/40M
Failed to execute goal org.codehaus.mojo:exec-maven-plugin:1.5.0:exec (default-cli) on project mavenproject2: Command execution failed. Process exited with an error: 255 (Exit value: 255) -> [Help 1]
To see the full stack trace of the errors, re-run Maven with the -e switch.
Re-run Maven using the -X switch to enable full debug logging.
For more information about the errors and possible solutions, please read the following articles:
[Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

Failed to execute goal org.apache.maven.plugins:maven-dependency-plugin:2.10

I have this error when attempting to install the maven project:
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-dependency-plugin:2.10:analyze-only
(analyze-only) on project functional-tests: Dependency
problems found -> [Help 1]
It appears right after the integration tests, during the verify phase. I can hardly guess where to look as not much other information is provided by the logs. I tried to run maven with -X argument to have a deeper look but that's the only error that appears. The last thing I see before the error appears in the detailed log is this WARNING below (that I doubt has anything to do with the error):
[WARNING] Used undeclared dependencies found:
[WARNING] javax.activation:activation:jar:1.1:test
[WARNING] Unused declared dependencies found:
[WARNING] org.slf4j:slf4j-log4j12:jar:1.7.6:compile
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 27.090 s
[INFO] Finished at: 2017-06-28T10:58:54+08:00
[INFO] Final Memory: 60M/1042M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-dependency-plugin:2.10:analyze-only (analyze-only) on project functional-tests: Dependency problems found -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-dependency-plugin:2.10:analyze-only (analyze-only) on project functional-tests: Dependency problems found
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-dependency-plugin:2.10:analyze-only (analyze-only) on project functional-tests: Dependency problems found
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:216)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:116)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:80)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:307)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:193)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:106)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:862)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:286)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:197)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.apache.maven.plugin.MojoExecutionException: Dependency problems found
at org.apache.maven.plugin.dependency.analyze.AbstractAnalyzeMojo.execute(AbstractAnalyzeMojo.java:260)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
... 20 more
[ERROR]
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
What could be causing this issue?
UPDATE:
I have resolved the issues that caused the warnings above and it did help removing the error. Now I only wonder why having used undeclared dependencies or declared unused dependencies are causing the whole build to fail?
UPDATE2:
Changing the slf4j scope to runtime also solved the problem.

Apparently the used undeclared dependencies warning was the culprit of my problem. After adding the dependency explicitly to the pom file, the issue was resolved.

The reason of this is:
[WARNING] Used undeclared dependencies found:
[WARNING] javax.activation:activation:jar:1.1:test
[WARNING] Unused declared dependencies found:
[WARNING] org.slf4j:slf4j-log4j12:jar:1.7.6:compile
you should remove org.slf4j:slf4j-log4j12 dependency and add javax.activation:activation dependency.

Same here, got same problem (few times for last few months) and found that fixing all warnings with Used undeclared dependencies/Unused declared dependencies fixes the issue.

Maven+JDK9 modules: Failed to parse module-info

Using 9-ea+171, Maven 3.5.0
I am compiling a project with this module-info.java:
module org.project {
}
But it fails with a mysterious error:
[ERROR] Failed to parse module-info:
[ERROR] With qdox: null
(...)
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.6.1:testCompile (default-testCompile) on project rli-stubs: Execution default-testCompile of goal org.apache.maven.plugins:maven-compiler-plugin:3.6.1:testCompile failed: Failed to parse module-info -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.6.1:testCompile (default-testCompile) on project rli-stubs: Execution default-testCompile of goal org.apache.maven.plugins:maven-compiler-plugin:3.6.1:testCompile failed: Failed to parse module-info
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:213)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:154)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:146)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:117)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:81)
at org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build(SingleThreadedBuilder.java:51)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:128)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:309)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:194)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:107)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:993)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:345)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:191)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:563)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.apache.maven.plugin.PluginExecutionException: Execution default-testCompile of goal org.apache.maven.plugins:maven-compiler-plugin:3.6.1:testCompile failed: Failed to parse module-info
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:145)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
... 20 more
Caused by: java.lang.RuntimeException: Failed to parse module-info
at org.apache.maven.plugin.compiler.TestCompilerMojo.preparePaths(TestCompilerMojo.java:322)
at org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:742)
at org.apache.maven.plugin.compiler.TestCompilerMojo.execute(TestCompilerMojo.java:170)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:134)
... 21 more
I recreated the simplest form of the project here:
https://github.com/benji/jdk9-mvn5-withqdoxnull
It seems to have something to do with src/test/java/ . If I remove that folder then the build passes.

You need to put module-info.java to src/main/java. Now it is located in src/main/java/com/test which is wrong. module-info.java must be a top level file.

You need maven-compiler-plugin at least 3.7.0 to use module system according to the table: https://cwiki.apache.org/confluence/display/MAVEN/Java+9+-+Jigsaw

opennlp install - no suitable method found for train

Hello I am trying to install opennlp on ubuntu. I have installed java 7, svn and maven 3.0.4. I have checked out the opennlp-trunk project based on the instructions on http://opennlp.apache.org/source-code.html.
svn co https://svn.apache.org/repos/asf/opennlp/trunk/
Now I go into trunk/opennlp and run the install command
mvn clean install
and I get this error
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 4:17.074s
[INFO] Finished at: Wed Feb 05 16:46:08 EST 2014
[INFO] Final Memory: 34M/113M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile (default-compile) on project opennlp-uima: Compilation failure: Compilation failure:
[ERROR] /home/ssriparasa-nlp/trunk/opennlp-uima/src/main/java/opennlp/uima/chunker/ChunkerTrainer.java:[206,41] error: no suitable method found for train(String,ObjectStream<ChunkSample>,int,int)
[ERROR] /home/ssriparasa-nlp/trunk/opennlp-uima/src/main/java/opennlp/uima/sentdetect/SentenceDetectorTrainer.java:[170,43] error: cannot find symbol
[ERROR] -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile (default-compile) on project opennlp-uima: Compilation failure
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:213)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:320)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:156)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:537)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:196)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:141)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:290)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:230)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:409)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:352)
Caused by: org.apache.maven.plugin.CompilationFailureException: Compilation failure
at org.apache.maven.plugin.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:656)
at org.apache.maven.plugin.CompilerMojo.execute(CompilerMojo.java:128)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:101)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:209)
... 19 more

Yep, the trunk is currently officially broken. The Apache Jenkins confirms the build failure. The OpenNLP developers have been notified.
Disclosure: I am an Apache committer (not on OpenNLP though).

Build should be back to normal.
https://builds.apache.org/job/OpenNLP/454/console

AD authentication java class for Fitnesse

How can I create ldap-authentation-${version}.jar file described here?
https://github.com/timander/fitnesse-ldap-authenticator
I am so lost.
I am trying to enable Active Directory authentication for Fitnesse test.
Any help is appreciated.
Thanks,
Ali
Ok Tim I attempted it and now I am running in some issues. First build failure issue was solved after changing the version in pom.xml from 20100303 to 20131110. Now the second build is failing because of this:
"
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.0.2:compile (default-compile) on project fitnesse-ldap-authenticator: Compilation failure: Compilation failure:
[ERROR] c:\Users\araza\Documents\GitHub\fitnesse-ldap-authenticator\src\main\java\fitnesse\authentication\LDAPAuthenticator.java:[26,16] error: isAuthenticated(String,String) in LDAPAuthenticator cannot override isAuthenticated(String,String) in Authenticator
[ERROR]
[ERROR] could not parse error message: overridden method does not throw Exception
[ERROR] c:\Users\araza\Documents\GitHub\fitnesse-ldap-authenticator\src\main\java\fitnesse\authentication\LDAPAuthenticator.java:3: warning: LdapCtxFactory is internal proprietary API and may be removed in a future release
[ERROR] import javax.naming.AuthenticationException;
[ERROR] ^
[ERROR]
[ERROR] c:\Users\araza\Documents\GitHub\fitnesse-ldap-authenticator\src\main\java\fitnesse\authentication\LdapContextFactory.java:[12,26] LdapCtxFactory is internal proprietary API and may be removed in a future release"
Ok, I made some progress and this is what I am getting now:
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project fitnesse-ldap-authenticator: Compilation failure
[ERROR] /c:/Users/araza/Documents/GitHub/fitnesse-ldap-authenticator/src/main/java/fitnesse/authentication/LDAPAuthenticator.java:[26,24] isAuthenticated(java.lang.String,java.lang.String) in fitnesse.authentication.LDAPAuthenticator cannot override isAuthenticated(java.lang.String,java.lang.String) in fitnesse.authentication.Authenticator
[ERROR] overridden method does not throw java.lang.Exception
[ERROR] -> [Help 1]
org.apache.maven.lifecycle.LifecycleExecutionException: Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.1:compile (default-compile) on project fitnesse-ldap-authenticator: Compilation failure
c:/Users/araza/Documents/GitHub/fitnesse-ldap-authenticator/src/main/java/fitnesse/authentication/LDAPAuthenticator.java:[26,24] isAuthenticated(java.lang.String,java.lang.String) in fitnesse.authentication.LDAPAuthenticator cannot override isAuthenticated(java.lang.String,java.lang.String) in fitnesse.authentication.Authenticator
overridden method does not throw java.lang.Exception
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:212)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:153)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:145)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:84)
at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject(LifecycleModuleBuilder.java:59)
at org.apache.maven.lifecycle.internal.LifecycleStarter.singleThreadedBuild(LifecycleStarter.java:183)
at org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:161)
at org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:317)
at org.apache.maven.DefaultMaven.execute(DefaultMaven.java:152)
at org.apache.maven.cli.MavenCli.execute(MavenCli.java:555)
at org.apache.maven.cli.MavenCli.doMain(MavenCli.java:214)
at org.apache.maven.cli.MavenCli.main(MavenCli.java:158)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)
at org.codehaus.plexus.classworlds.launcher.Launcher.launch(Launcher.java:229)
at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)
at org.codehaus.plexus.classworlds.launcher.Launcher.main(Launcher.java:356)
Caused by: org.apache.maven.plugin.compiler.CompilationFailureException: Compilation failure
-
c:/Users/araza/Documents/GitHub/fitnesse-ldap-authenticator/src/main/java/fitnesse/authentication/LDAPAuthenticator.java:[26,24] isAuthenticated(java.lang.String,java.lang.String) in fitnesse.authentication.LDAPAuthenticator cannot override isAuthenticated(java.lang.String,java.lang.String) in fitnesse.authentication.Authenticator
overridden method does not throw java.lang.Exception
at org.apache.maven.plugin.compiler.AbstractCompilerMojo.execute(AbstractCompilerMojo.java:858)
at org.apache.maven.plugin.compiler.CompilerMojo.execute(CompilerMojo.java:129)
at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo(DefaultBuildPluginManager.java:106)
at org.apache.maven.lifecycle.internal.MojoExecutor.execute(MojoExecutor.java:208)
... 19 more

I assumed knowledge of Git and Maven when I created the FitNesse LDAP Authenticator. To build a jar file:
Use Git to check out the code
Run Maven to create a jar file (mvn package)
The jar will be in the target directory where you checked out the code