Adding multiple jars to classpath on commandline

Question

I'm running Ubuntu and want to execute a Java file from terminal by including multiple jar files.

All my jars are included in tha jar folder.

I tried

javac -cp jar/A.jar: jar/B.jar: jar/C.jar: jar/D.jar MyFile.java

I get below error.

javac: invalid flag: jar/B.jar:
Usage: javac <options> <source files>
use -help for a list of possible option

Can anyone guide how to use multiple jars in classpath ?

Reimeus · Accepted Answer · 2014-03-03T19:22:28.983

14

Remove the spaces from the classpath and add the current path

javac -cp jar/A.jar:jar/B.jar:jar/C.jar:jar/D.jar:. MyFile.java

Since Java 6 you can use classpath wilcards

javac -cp jar/*:. MyFile.java

edited Mar 03 '14 at 19:22

answered Mar 03 '14 at 19:06

Reimeus

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and what about if I have to execute the classfile?? – user3044327 Mar 03 '14 at 19:23
The same classpath will work for the JVM – Reimeus Mar 03 '14 at 19:24
Thanks. Works like a magic. – user3044327 Mar 03 '14 at 19:27
What if I want to include a jar and another custom class in the same directory as my Main.java file? I tried `javac -classpath ./guava-18.0.jar:. Main.java ` but it does not find the custom class. – Vallerious Oct 20 '20 at 16:56
try `javac -classpath ./guava-18.0.jar:. *.java` – Reimeus Oct 20 '20 at 19:07

score -1 · Answer 2 · answered Jul 29 '14 at 06:27

-1

ClassPath set through command prompt will work only for current cmd window. Once you close it and open a new cmd window it will not work. Rather than setting classpath from command prompt, keep related paths to system properties:

For windows:

go to My Computer--> Properties--> Advance System Settings--> Environment Variables--> CLASSPATH--> put your path like this--> path1;path2;path3;. Don't forget to keep . (DOT) at the end.

answered Jul 29 '14 at 06:27

Shailesh Saxena

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Specifying application specific jars on system level is not a way to go. This is why startup scripts exist which are often a mess, but more flexible. – Peter Sep 21 '18 at 12:09

Adding multiple jars to classpath on commandline

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