Java how to import a jar file from command line

Question

I m trying to call a class  main method  from command line  Windows  with Java  The class imports other classes  other jars    I always get  class not found exception  from a class that my main program imports   Here s what I tried    Add a CLASSPATH env  var with the path where the referenced lib resides  not working  I tried with all these different parameters when calling  java -jar myjar jar  from command line    -classpath lib     -classpath   lib     -classpath lib    -cp lib      -cp lib       -classpath lib referenced-class jar    -classpath   lib referenced-class jar   lib is where the referenced jar resides  I tried packaging all the referenced jar inside my jar where my main class resides    And with all that  I also tried to specify the classes inside the Manifest file with  Class-path referenced-jar jar and I also tried Class-path lib referenced-jar jar

User · Answer

you can try to export as  Runnable jar  in eclipse  I have also problems  when i export as  jar   but i have never problems when i export as  Runnable jar

User · Answer

If you re running a jar file with java -jar  the -classpath argument is ignored  You need to set the classpath in the manifest file of your jar  like so      Class-Path  jar1-name jar2-name directory-name jar3-name   See the Java tutorials  Adding Classes to the JAR File s Classpath   Edit  I see you already tried setting the class path in the manifest  but are you sure you used the correct syntax  If you skip the     after  Class-Path  like you showed  it would not work

User · Answer

try  java -cp  your jar jar lib referenced jar jar  com your main Main   If you are on windows  you should use   instead of

User · Answer

You could run it without the -jar command line argument if you happen to know the name of the main class you wish to run   java -classpath   myjar jar lib referenced-class jar my package MainClass   If perchance you are using linux  you should use     instead of     in the classpath

[java] Java: how to import a jar file from command line

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