sloution to ANT build error "error during FTP transfer: j ava.net.ConnectException: Connection refused: connect"

This is my personal experience, when I am tying to  access the Unix server through FTP, I got the below error:

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

C:\ant_scripting\apache-ant-1.8.2\build.xml:20: Could not create type ftp due to java.lang.NoClassDefFoundError: org/apache/commons/net/ftp/FTPClientConfig at org.apache.tools.ant.taskdefs.optional.net.FTP$LanguageCode.getValidLanguageCodes(FTP.java:2693)

        at org.apache.tools.ant.taskdefs.optional.net.FTP$LanguageCode.(FTP.java:2689)

        at org.apache.tools.ant.taskdefs.optional.net.FTP.(FTP.java:135)

        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)

        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)

        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27)

        at java.lang.reflect.Constructor.newInstance(Constructor.java:274)

        at org.apache.tools.ant.AntTypeDefinition.innerCreateAndSet(AntTypeDefinition.java:328)

        at org.apache.tools.ant.AntTypeDefinition.createAndSet(AntTypeDefinition.java:274)

        at org.apache.tools.ant.AntTypeDefinition.icreate(AntTypeDefinition.java:219)

        at org.apache.tools.ant.AntTypeDefinition.create(AntTypeDefinition.java:206)

        at org.apache.tools.ant.ComponentHelper.createComponent(ComponentHelper.java:286)

        at org.apache.tools.ant.ComponentHelper.createComponent(ComponentHelper.java:264)

        at org.apache.tools.ant.UnknownElement.makeObject(UnknownElement.java:417)

        at org.apache.tools.ant.UnknownElement.maybeConfigure(UnknownElement.java:163)

        at org.apache.tools.ant.Task.perform(Task.java:347)

        at org.apache.tools.ant.Target.execute(Target.java:390)

        at org.apache.tools.ant.Target.performTasks(Target.java:411)

        at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399)

        at org.apache.tools.ant.Project.executeTarget(Project.java:1368)

        at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)

        at org.apache.tools.ant.Project.executeTargets(Project.java:1251)

        at org.apache.tools.ant.Main.runBuild(Main.java:809)

        at org.apache.tools.ant.Main.startAnt(Main.java:217)

        at org.apache.tools.ant.launch.Launcher.run(Launcher.java:280)

        at org.apache.tools.ant.launch.Launcher.main(Launcher.java:109)

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solution which I have find to avoid this error was given below:

1. To run FTP command  by using ant script, you must have to down load the commons-net-1.4.1.jar file.

  click here to down load the file, please make sure to download the jar file according to your JAVA version,

Find more details on the Apache  link.

2. please make sure to put the jar file in the class path. and run the script, oops you won't get any error now.

please put your comment in case of any issues.