Set folder for classpath

Question

From the command line  how do I set the Java CLASSPATH option to point to one or more directories containing multiple jar file  Are there wildcards for recursive directory and sub-directory support    My JAR files are sorted in several sub-directories

User · Accepted Answer

If you are using Java 6 or higher you can use wildcards of this form:

java -classpath ".;c:\mylibs\*;c:\extlibs\*" MyApp

If you would like to add all subdirectories: lib\a\, lib\b\, lib\c\, there is no mechanism for this in except:

java -classpath ".;c:\lib\a\*;c:\lib\b\*;c:\lib\c\*" MyApp

There is nothing like lib\*\* or lib\** wildcard for the kind of job you want to be done.

User · Answer

Use the command as  java -classpath    C  MyLibs a   D  MyLibs b     lt your-class-name gt    The above command will set the mentioned paths to classpath only once for executing the class named TestClass   If you want to execute more then one classes  then you can follow this  set classpath    C  MyLibs a   D  MyLibs b      After this you can execute as many classes as you want just by simply typing  java  lt your-class-name gt    The above command will work till you close the command prompt  But after closing the command prompt  if you will reopen the command prompt and try to execute some classes  then you have to again set the classpath with the help of any of the above two mentioned methods  First method for executing one class and second one for executing more classes   If you want to set the classpth only once so that it could work for everytime  then do as follows  1  Right click on  My Computer  icon 2  Go to the  properties  3  Go to the  Advanced System Settings  or  Advance Settings  4  Go to the  Environment Variable  5  Create a new variable at the user variable by giving the information as below     a   Variable Name-     classpath     b   Variable Value-      C  program files jdk 1 6 0 bin C  MyLibs a   C  MyLibs b   6 Apply this and you are done    Remember this will work every time  You don t need to explicitly set the classpath again and again   NOTE  If you want to add some other libs after some day  then don t forget to add a semi-colon at the end of the  variable-value  of the  Environment Variable  and then type the path of your new libs after the semi-colon  Because semi-colon separates the paths of different directories   Hope this will help you

[java] Set folder for classpath

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