CODEWITHSUNDEEP
javaclasspathapache-commons
darkace
darkace

Reputation: 878

How to run Java from CMD, with Apache Commons libraries

I've made a program which uses the Apache Commons io and lang3 libraries.

It runs fine in eclipse but I can't get it to run from cmd and it comes up with the following error:

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/la ng3/StringUtils 
    at mainActivity.main(mainActivity.java:37) 
Caused by: java.lang.ClassNotFoundException: org.apache.commons.lang3.StringUtils 
    at java.net.URLClassLoader$1.run(Unknown Source) 
    at java.net.URLClassLoader$1.run(Unknown Source) 
    at java.security.AccessController.doPrivileged(Native Method) 
    at java.net.URLClassLoader.findClass(Unknown Source) 
    at java.lang.ClassLoader.loadClass(Unknown Source) 
    at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source) 
    at java.lang.ClassLoader.loadClass(Unknown Source) 
    ... 1 more

How do I get it to run from cmd (so that it works in a batch file)

** I'm relatively new and am on Win 8 (I am not using Maven) **

Upvotes: 0

Views: 4473

Answers (7)

sevensevens
sevensevens

Reputation: 1750

You'll need to manually add each jar file in the CMD window. You can do this using -cp

For example

java -cp /path/to/file;/path/to/anotherfile ...

Also, please remember to use the right path seperator - ; for windows, and : for linux

Upvotes: 0

Makky
Makky

Reputation: 17461

If you are using Maven then

<dependency>
    <groupId>commons-lang</groupId>
    <artifactId>commons-lang</artifactId>
    <version>2.3</version>
</dependency>

Upvotes: -2

Santosh
Santosh

Reputation: 17903

When you run the program from eclipse, the jar files are added by Eclipse in the classpath. But when you run the same form command prompt, the jars files are needed to be in classpath explicitly.

There are two ways

  • Run your program with classpath as follows

java -classpath ".;c:\yourLib*" YourApp

where yourLib is the folder containing the apache-commons jars.

  • set a CLASSPATH environment variable with value to absolute paths of jars seperated by ;

set CLASSPATH=D:\yourLib\

then run your program without classpath option. Runtime will pick the required classpath from environment variable defined earlier.

java YourApp

Note: I am assuming windows platform.

Upvotes: 1

Brian
Brian

Reputation: 17309

Add the necessary jars to your classpath. Windows:

> java -classpath yourjar.jar;lib\*.jar com.example.Main

Unix:

$ java -classpath yourjar.jar:lib/*.jar com.example.Main

The only differences are the directory separator (//\) and path separator (:/;). This assumes your Apache jar(s) is in a lib directory in your project.

Upvotes: 1

Bimalesh Jha
Bimalesh Jha

Reputation: 1504

Your classpath has problems. Eclipse is able to use the project settings for resolving runtime library dependencies in the classpath. Add commons-lang*.jar and commons-io*.jar files in the classpath of java. You can use -cp or -classpath option to set classpath on command line.

Upvotes: 0

ajay.patel
ajay.patel

Reputation: 1967

Update the classpath with apache-coomons libraries.

Upvotes: 0

sheidaei
sheidaei

Reputation: 10332

You have to make your JAVA aware of libraries you are using. Java doesn't know where to look for those libraries.

Upvotes: 0

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