Windows command line Error(SOLVED),but how to add LWJGL?

Newbie & Debugging Questions
#1

I am trying to create a runnable jar file. I am using multiple classes and packages.

Windows 7 32-bit. jdk1.7.0_17. jre7.

I am using windows prompt, because i guess there is no other way to create runnable jar file with multiple classes. Right now i am getting this:
C:\Users\Admin\LudumDareDone\bin>java -jar “ludum.jar”
Error: Could not find or load main class Main

i have this manifest:
Manifest-Version: 1.0
Created-By:
Main-Class: Main.java

i applied it with this command:
jar cfm ludum.jar manifest.mf

What i should do? Maybe there is other way to create runnable jar file with multiple classes? I searched answer in Google, but i cant find anything usefull, please give me direct links or answer.

#2

IDEs have the option to generate a runnable jar from Your project.
Your current issue is that You need to define a fully qualified class name: “com.my.package.Main”
Class is the the class object, the structure You are using within Your program, as such “Main.java” is not what is needed in that location.

#3

Sorry for stupid question, but i think i am doing something wrong here. What is fully qualified class name?
Currently, i have this:
MyJavaProject
----src
--------(default package)
------------Main.java

How fully qualified class name should look like?

EDIT:
i am using eclipse

#4

Hi

Rather put that into your manifest:

[quote]Main-Class: Main
[/quote]
Whatever your IDE is, try to understand what happens under the hood.

#5

Fully qualified class name consist of package name and class name. As in my previous post “com.my.package” is package name and “Main” is the class name.
Package translates 1:1 to the folder structure, so for the given package “com.my.package” the folder structure would be like this

Project
|_ src
|_ com
|_ my
|package
| Main.java

In Your example, You are not using package so Your fully qualified class name is the same as the simple form “Main”

Why package names ? It’s a form of namespace. Imagine using 7 different libraries, non using packages and everyone having a “Main” class. How would You tell Your program, which one to use ?
That’s why there are packages. All libraries and programs in java world are in packages. There are also other benefits
http://docs.oracle.com/javase/tutorial/java/package/index.html

#6

I just meant that “.java” has nothing to do in the manifest attribute “Main-Class”.

#7

try a manifest:

Manifest-Version: 1.0
Class-Path: .
Main-Class: Main

using the manifest name

MANIFEST.MF
in the folder META-INF

#8

Now i think i have another problem:

Exception in thread “main” java.lang.NoClassDefFoundError: org/lwjgl/LWJGLExcept
ion
at java.lang.Class.getDeclaredMethods0(Native Method)
at java.lang.Class.privateGetDeclaredMethods(Class.java:2451)
at java.lang.Class.getMethod0(Class.java:2694)
at java.lang.Class.getMethod(Class.java:1622)
at sun.launcher.LauncherHelper.getMainMethod(LauncherHelper.java:494)
at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:486)

Caused by: java.lang.ClassNotFoundException: org.lwjgl.LWJGLException
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
… 6 more

EDIT:
What i should do? Where is problem? Or maybe there is another way to create runnable jar file with multiple classes?

#9

I think i finaly done that, but i tried simple program with pure java. I want to add lwjgl. How i should do that?

#10

It’s explained here:
http://docs.oracle.com/javase/tutorial/deployment/jar/downman.html

[quote]Class-Path: MyUtils.jar
[/quote]
Edit.: Don’t forget to do something for the native libraries.

#11

Maybe you, or somebody else know other tutorial? I would like more examples and maybe something what i can try instant.