Getting started: compiling helloworld

Sterrenkijker · July 6, 2009, 11:40am

Probably a very stupid question, but all the tutorials here seem to skip this very simple but essential step. I've copied a very very simple helloworld program, and I want to get it compiled and running.

import com.jme.app.SimpleGame; import com.jme.math.Vector3f; import com.jme.scene.shape.Box; /** * Started Date: Jul 20, 2004<br><br> * Simple HelloWorld program for jME * * @author Jack Lindamood */ public class HelloWorld extends SimpleGame{ public static void main(String[] args) { HelloWorld app=new HelloWorld(); // Create Object app.setConfigShowMode(ConfigShowMode.AlwaysShow); // Signal to show properties dialog app.start(); // Start the program } protected void simpleInitGame() { Box b=new Box("My box",new Vector3f(0,0,0),new Vector3f(1,1,1)); // Make a box rootNode.attachChild(b); // Put it in the scene graph } }

I'm working in Linux, doing everything in a text editor and the command line. I've put the file jME_2.0.jar in the same folder. Now I'm trying to compile and run the program:

corien@Ubuntu-Corien:~/Bureaublad/towerdefence$ ls HelloWorld.java jME_2.0.jar run_jME.sh corien@Ubuntu-Corien:~/Bureaublad/towerdefence$ javac -classpath ./:jME_2.0.jar HelloWorld.java corien@Ubuntu-Corien:~/Bureaublad/towerdefence$ java -classpath ./:jME_2.0.jar HelloWorld 6-jul-2009 13:37:32 com.jme.app.BaseGame start INFO: Application started. 6-jul-2009 13:37:32 com.jme.system.PropertiesGameSettings <init> INFO: PropertiesGameSettings created 6-jul-2009 13:37:32 com.jme.system.PropertiesGameSettings load WARNING: Could not load properties. Creating a new one. Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: [Lorg/lwjgl/opengl/DisplayMode; at java.lang.Class.getDeclaredMethods0(Native Method) at java.lang.Class.privateGetDeclaredMethods(Class.java:2427) at java.lang.Class.getDeclaredMethod(Class.java:1935) at java.awt.Component.isCoalesceEventsOverriden(Component.java:5726) at java.awt.Component.access$100(Component.java:162) at java.awt.Component$2.run(Component.java:5680) at java.awt.Component$2.run(Component.java:5678) at java.security.AccessController.doPrivileged(Native Method) at java.awt.Component.checkCoalescing(Component.java:5677) at java.awt.Component.<init>(Component.java:5646) at java.awt.Container.<init>(Container.java:245) at java.awt.Window.<init>(Window.java:320) at java.awt.Window.<init>(Window.java:466) at java.awt.Dialog.<init>(Dialog.java:654) at java.awt.Dialog.<init>(Dialog.java:398) at javax.swing.JDialog.<init>(JDialog.java:259) at javax.swing.JDialog.<init>(JDialog.java:193) at javax.swing.JDialog.<init>(JDialog.java:141) at com.jme.system.lwjgl.LWJGLPropertiesDialog.<init>(LWJGLPropertiesDialog.java:184) at com.jme.app.AbstractGame$1.run(AbstractGame.java:236) at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209) at java.awt.EventQueue.dispatchEvent(EventQueue.java:597) at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273) at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183) at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168) at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160) at java.awt.EventDispatchThread.run(EventDispatchThread.java:121) Caused by: java.lang.ClassNotFoundException: org.lwjgl.opengl.DisplayMode at java.net.URLClassLoader$1.run(URLClassLoader.java:200) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:188) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276) at java.lang.ClassLoader.loadClass(ClassLoader.java:251) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319) ... 28 more

What am I doing wrong? How do I get my helloworld running?

ttrocha · July 6, 2009, 12:05pm

In the particular case the compiler complains because it needs the lwjgl.jar as well. Have a look in

the lib-directory (I assume you downloaded the jme20_complete directory).

you have to add to your class-path this libs:

lib/lwjgl.jar lib/lwjgl_util.jar lib/lwjgl_util_applet.jar

lib/jogl.jar lib/gluegen-rt.jar lib/jinput.jar lib/jorbis-0.0.17.jar

lib/swt.jar

and additional the nativelibs-directory.

try something like this:

java -Djava.library.path=./lib/natives -classpath lib/lwjgl.jar:lib/lwjgl_util.jar:lib/lwjgl_util_applet.jar:lib/jogl.jar:lib/gluegen-rt.jar:lib/jinput.jar:lib/jorbis-0.0.17.jar:lib/swt.jar:jME_2.0.jar HelloWorld

And if you ask why that libs don't have to be specified in the batch-file. That is because of the manifest-file inside the jar that is pointing out explicitly what libaries to choose for TestChooser.class

Hope I could help and keep on rocking,
ToM

PS: Actually calling this manually is no fun! :D Why not use eclipse or Netbeans? For that have a look here:
http://www.jmonkeyengine.com/wiki/doku.php?id=setting_up_eclipse_to_build_jme_2

Sterrenkijker · July 6, 2009, 12:18pm

Thanks a lot, this was very helpfull! I finally got something up and running :).

urza_rouge · August 1, 2009, 3:16pm

Hello !

First, excuse my crap level in english and java

I reply here, cause my problem is similar to Sterren : I want to compile this helloworld, with command line and emacs.

Before go throught more detailed question, these are my questions :

> What organisation of folders and files is Sterren working on ?

I have 2 possibles options.

1 -) The organisation obtained by fallowing all the steps @

http://www.jmonkeyengine.com/wiki/doku.php?id=chapter_1_-_getting_started

2 -) The simple precompiled .jar files. obtained @

> Can you explain in detail the command : javac -classpath ./:jME_2.0.jar HelloWorld.java

javac : pointless to explain …

-classpath : i supposed its to tell to the compiler " Hey dude, find the JME_2.0.jar to compile plz "

HelloWorld.java : pointless to explain …

Thanks for reading

urza_rouge · August 2, 2009, 3:58pm

Hey ! Please considerer this double-post like an up }:-@

I maybe was confuse last post, so i show you my problem in details, hoping it's not too stupid !

Here : http://www.jmonkeyengine.com/wiki/doku.php?id=simplegame

I can find a class named TestSphere.java.

I simply try to put this class in the src folder, and try to compile it with ( i think XD ) a crap command. I have no idea how to solve this.

Here are the errors ( note that i removed all the " cannot find symbol )

lenhof@lenhof-desktop:~/jme/src$ ls com HelloWorld.java jmetest TestSphere.java lenhof@lenhof-desktop:~/jme/src$ javac TestSphere.java TestSphere.java:12: cannot find symbol symbol : class AlphaState location: package com.jme.scene.state import com.jme.scene.state.AlphaState; ^ ./com/jme/system/DisplaySystem.java:41: warning: sun.misc.Service is Sun proprietary API and may be removed in a future release import sun.misc.Service; ^ ./com/jme/system/DisplaySystem.java:42: warning: sun.misc.ServiceConfigurationError is Sun proprietary API and may be removed in a future release import sun.misc.ServiceConfigurationError; ^ ./com/jme/system/DisplaySystem.java:192: warning: sun.misc.ServiceConfigurationError is Sun proprietary API and may be removed in a future release throws ServiceConfigurationError { ^ ./com/jme/system/lwjgl/LWJGLPropertiesDialog.java:65: package org.lwjgl does not exist import org.lwjgl.LWJGLException; ^ ./com/jme/system/lwjgl/LWJGLPropertiesDialog.java:66: package org.lwjgl.opengl does not exist import org.lwjgl.opengl.Display; ^ ./com/jme/system/lwjgl/LWJGLPropertiesDialog.java:67: package org.lwjgl.opengl does not exist import org.lwjgl.opengl.DisplayMode; ^ ^ ./com/jme/input/lwjgl/LWJGLKeyInput.java:39: package org.lwjgl.input does not exist import org.lwjgl.input.Keyboard; ^ ./com/jme/input/lwjgl/LWJGLKeyInput.java:40: package org.lwjgl.opengl does not exist import org.lwjgl.opengl.Display; ^ ./com/jme/input/lwjgl/LWJGLMouseInput.java:45: package org.lwjgl does not exist import org.lwjgl.LWJGLException; ^ ./com/jme/input/lwjgl/LWJGLMouseInput.java:46: package org.lwjgl.input does not exist import org.lwjgl.input.Cursor; ^ ./com/jme/input/lwjgl/LWJGLMouseInput.java:47: package org.lwjgl.input does not exist import org.lwjgl.input.Mouse; ^ ./com/jme/input/lwjgl/LWJGLMouseInput.java:48: package org.lwjgl.opengl does not exist import org.lwjgl.opengl.Display; ^ ./com/jme/input/joystick/lwjgl/LWJGLJoystickInput.java:37: package org.lwjgl does not exist import org.lwjgl.LWJGLException; ^ ./com/jme/input/joystick/lwjgl/LWJGLJoystickInput.java:38: package org.lwjgl.input does not exist import org.lwjgl.input.Controllers; ^ ./com/jme/input/joystick/lwjgl/LWJGLJoystick.java:39: package net.java.games.input does not exist import net.java.games.input.Rumbler; ^ ./com/jme/input/joystick/lwjgl/LWJGLJoystick.java:41: package org.lwjgl.input does not exist import org.lwjgl.input.Controller; ^ ./com/jme/input/joystick/lwjgl/LWJGLJoystick.java:55: cannot find symbol symbol : class Controller location: class com.jme.input.joystick.lwjgl.LWJGLJoystick LWJGLJoystick( Controller controller ) { ^ ./com/jmex/audio/openal/OpenALSystem.java:45: package org.lwjgl.openal does not exist import org.lwjgl.openal.AL; ^ ./com/jmex/audio/openal/OpenALSystem.java:46: package org.lwjgl.openal does not exist import org.lwjgl.openal.AL10; ^ ./com/jmex/audio/openal/OpenALSystem.java:47: package org.lwjgl.openal does not exist import org.lwjgl.openal.OpenALException; ^ ./com/jmex/audio/openal/OpenALEar.java:37: package org.lwjgl.openal does not exist import org.lwjgl.openal.AL10; ^ ./com/jmex/audio/openal/OpenALSource.java:35: package org.lwjgl.openal does not exist import org.lwjgl.openal.AL10; ^ ./com/jmex/audio/openal/OpenALAudioBuffer.java:38: package org.lwjgl.openal does not exist import org.lwjgl.openal.AL10; ^ ./com/jmex/audio/openal/OpenALAudioTrack.java:40: warning: sun.audio.AudioStream is Sun proprietary API and may be removed in a future release import sun.audio.AudioStream; ^ ./com/jme/util/lwjgl/LWJGLTimer.java:39: package org.lwjgl does not exist import org.lwjgl.Sys; ^ ./com/jme/system/lwjgl/LWJGLStandardCursor.java:39: package org.lwjgl.input does not exist import org.lwjgl.input.Cursor; ^ ^ ./com/jmex/audio/util/AudioLoader.java:47: package com.jcraft.jorbis does not exist import com.jcraft.jorbis.JOrbisException; ^ ./com/jmex/audio/util/AudioLoader.java:48: package com.jcraft.jorbis does not exist import com.jcraft.jorbis.VorbisFile; ^ ./com/jmex/audio/openal/OpenALStreamedAudioPlayer.java:42: package org.lwjgl.openal does not exist import org.lwjgl.openal.AL10; ^ ./com/jmex/audio/stream/OggInputStream.java:43: package com.jcraft.jogg does not exist import com.jcraft.jogg.Packet; ^ ./com/jmex/audio/stream/OggInputStream.java:44: package com.jcraft.jogg does not exist import com.jcraft.jogg.Page; ^ ./com/jmex/audio/stream/OggInputStream.java:45: package com.jcraft.jogg does not exist import com.jcraft.jogg.StreamState; ^ ./com/jmex/audio/stream/OggInputStream.java:46: package com.jcraft.jogg does not exist import com.jcraft.jogg.SyncState; ^ ./com/jmex/audio/stream/OggInputStream.java:47: package com.jcraft.jorbis does not exist import com.jcraft.jorbis.Block; ^ ./com/jmex/audio/stream/OggInputStream.java:48: package com.jcraft.jorbis does not exist import com.jcraft.jorbis.Comment; ^ ./com/jmex/audio/stream/OggInputStream.java:49: package com.jcraft.jorbis does not exist import com.jcraft.jorbis.DspState; ^ ./com/jmex/audio/stream/OggInputStream.java:50: package com.jcraft.jorbis does not exist import com.jcraft.jorbis.Info; ^ ./com/jme/system/DisplaySystem.java:195: warning: sun.misc.Service is Sun proprietary API and may be removed in a future release Iterator<SystemProvider> displayProviders = Service.providers(SystemProvider.class); ^ ./com/jme/system/jogl/JOGLDisplaySystem.java:55: package javax.media.opengl does not exist import javax.media.opengl.DebugGL; ^ ./com/jme/system/jogl/JOGLDisplaySystem.java:56: package javax.media.opengl does not exist import javax.media.opengl.GL; ^ ./com/jme/system/jogl/JOGLDisplaySystem.java:57: package javax.media.opengl does not exist import javax.media.opengl.GLAutoDrawable; ^ ./com/jme/system/jogl/JOGLDisplaySystem.java:58: package javax.media.opengl does not exist import javax.media.opengl.GLCanvas; ^ ./com/jme/system/jogl/JOGLDisplaySystem.java:59: package javax.media.opengl does not exist import javax.media.opengl.GLCapabilities; ^ ./com/jme/system/jogl/JOGLDisplaySystem.java:60: package javax.media.opengl does not exist import javax.media.opengl.GLContext; ^ ./com/jme/system/jogl/JOGLDisplaySystem.java:61: package javax.media.opengl does not exist import javax.media.opengl.GLException; ^ ./com/jme/system/jogl/JOGLDisplaySystem.java:62: package javax.media.opengl does not exist import javax.media.opengl.Threading; ^ ./com/jme/system/jogl/JOGLDisplaySystem.java:63: package javax.media.opengl.glu does not exist import javax.media.opengl.glu.GLU; ^ ./com/jme/renderer/jogl/JOGLRenderer.java:47: package javax.media.opengl does not exist import javax.media.opengl.GL; ^ ./com/jme/renderer/jogl/JOGLRenderer.java:48: package javax.media.opengl does not exist import javax.media.opengl.GLContext; ^ ./com/jme/renderer/jogl/JOGLRenderer.java:49: package javax.media.opengl does not exist import javax.media.opengl.GLException; ^ ./com/jme/renderer/jogl/JOGLRenderer.java:50: package javax.media.opengl.glu does not exist import javax.media.opengl.glu.GLU; ^ ./com/jmex/awt/jogl/JOGLAWTCanvas.java:40: package javax.media.opengl does not exist import javax.media.opengl.GLAutoDrawable; ^ ./com/jmex/awt/jogl/JOGLAWTCanvas.java:41: package javax.media.opengl does not exist import javax.media.opengl.GLCanvas; ^ ./com/jmex/awt/jogl/JOGLAWTCanvas.java:42: package javax.media.opengl does not exist import javax.media.opengl.GLCapabilities; ^ ./com/jmex/awt/jogl/JOGLAWTCanvas.java:43: package javax.media.opengl does not exist import javax.media.opengl.GLEventListener; ^ ./com/jme/renderer/jogl/JOGLFont.java:37: package javax.media.opengl does not exist import javax.media.opengl.GL; ^ ./com/jme/renderer/jogl/JOGLFont.java:38: package javax.media.opengl.glu does not exist import javax.media.opengl.glu.GLU; ^ ./com/jme/renderer/jogl/JOGLContextCapabilities.java:38: package javax.media.opengl does not exist import javax.media.opengl.GL; ^ ./com/jme/renderer/jogl/JOGLContextCapabilities.java:39: package javax.media.opengl does not exist import javax.media.opengl.GLAutoDrawable; ^ Note: ./com/jme/scene/shape/Box.java uses or overrides a deprecated API. Note: Recompile with -Xlint:deprecation for details. Note: Some input files use unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details. 100 errors 5 warnings

I spend so many time to just understand WHY i can't compile. I think i have to tell to the compiler where the openGL .jar files must be found.

I apologyze again for my crap english and understandment of my environment; thanks for reading and maybe helping me! :)

NB ; Should i give more details ?

JOC · August 2, 2009, 5:49pm

The example you are trying to build was for JME1.0 - that is why you cant find com.jme.scene.state.AlphaState; it doesn’t exist any more. See the wiki for changes from JME1 to JME2 at

http://www.jmonkeyengine.com/wiki/doku.php?id=jme_to_jme2_changes

urza_rouge · August 2, 2009, 7:36pm

Arf

Well, i tried to build the HelloWorld from the first post, but i still have the same errors :,(