Adding jar to classpath when running from command line

classpath, java

Solution

Your problem is min separator you are using. Separator `;` is for windows. On Unix systems you should use `:` instead:

java -classpath "bin:mysql-connector-java-5.1.19-bin.jar" MyProgram

Problem

Ok I know this question has been asked many many many times before, but I've googled it and looked at examples and looked at questions on SO for the past month, and I seriously cannot get this to work. I think the problem is that I want to be able to run the program from both Eclipse and the command line. I'm also using OSX and I think a lot of the examples I'm reading are for Windows/Linux. If I have a simple program compiled in Eclipse that I want to run from the command line I do this: ``` java -cp bin MyProgram ``` I have another program I compile and run in Eclipse, and this references the MySQL JDBC connector (mysql-connector-java-5.1.19-bin.jar) which is stored in the same directory. This works fine from Eclipse, but I can't run it from the command line. I've tried all combinations of things... ``` java -classpath "bin;mysql-connector-java-5.1.19-bin.jar" MyProgram java -cp bin\;mysql-connector-java-5.1.19-bin.jar MyProgram ``` and get all sorts of class not found errors... ``` Exception in thread "main" java.lang.NoClassDefFoundError: MyProgram Caused by: java.lang.ClassNotFoundException: MyProgram at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) ```

Original source