Running Java Class under Linux terminal

Question

I'm trying to run a JAVA Class under Linux Mint from the Terminal.

My Java class runs nice within any IDE, so I know it's not a code problem, but actually need to run it from the Command Line this time. However, I'm having issues at this point.

I used the following command:

java -cp . Interface

But it happens that it gives me an java.lang.NoClassDefFoundError Exception:

Exception in thread "main" java.lang.NoClassDefFoundError: Interface (wrong name: client/Interface)
    at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:788)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:447)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:71)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
    at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:482)

I'm looking to understand all the components that could make it possible to solve this issue and to be able to overcome future problems on the topic.

Thank you for your time.

Post your code (though it's likely the answer below hit the answer on the head) — KevinDTimm
– KevinDTimm, Commented Nov 26, 2013 at 14:35

Holger · Accepted Answer · 2013-11-26 14:47:33Z

4

Your class resides within the package client so you have to change the current directory to the parent directory and run it with java -cp . client.Interface. ls should show you a directory named client.

<current directory>
└ client
  └ Interface.class

So using the information you gave in the comments to another answer, your current directory should be NetBeansProjects/ServerClient/build/classes/ when starting the application using the above command line.

edited Nov 26, 2013 at 14:47

answered Nov 26, 2013 at 14:30

Holger

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Comments

Maxim Shoustin · Accepted Answer · 2013-11-26 14:30:42Z

1

Provide package name as well:

java  -cp . client.Interface

Run this command from the Project root (aka at the same place where is your bin file)

answered Nov 26, 2013 at 14:30

Maxim Shoustin

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