Posted by s3a on Dec 24, 2011; 5:27am
URL: https://forum.jogamp.org/Code-seems-to-be-okay-according-to-netbeans-prior-to-run-attempt-but-fails-to-run-tp3610062.html

I'm planning to use JOGL 2.x and I'm getting issues with the migration. If it matters, I am using OpenJDK 7 and Netbeans 7.0.1.

The error says:
Exception in thread "main" java.lang.NoClassDefFoundError: com/jogamp/common/os/Platform
        at javax.media.opengl.GLProfile.<clinit>(GLProfile.java:1155)
        at SimpleScene.main(SimpleScene.java:15)
Caused by: java.lang.ClassNotFoundException: com.jogamp.common.os.Platform
        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)
        ... 2 more
Java Result: 1

The code I copied (I changed one line - what that line used to be is left as a commented line):
import java.awt.Frame;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.media.opengl.*;
import javax.media.opengl.awt.GLCanvas;
import com.jogamp.opengl.util.*;

public class SimpleScene implements GLEventListener {

    private double theta = 0;
    private double s = 0;
    private double c = 0;

    public static void main(String[] args) {
        GLProfile glp = GLProfile.get(GLProfile.GL2);
        GLCapabilities caps = new GLCapabilities(glp);
//        GLCanvas canvas = new GLCanvas(caps);
        GLCanvas canvas = new GLCanvas();

        Frame frame = new Frame("AWT Window Test");
        frame.setSize(300, 300);
        frame.add(canvas);
        frame.setVisible(true);

        frame.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });

        canvas.addGLEventListener(new SimpleScene());

        FPSAnimator animator = new FPSAnimator(canvas, 60);
        animator.add(canvas);
        animator.start();
    }

    @Override
    public void display(GLAutoDrawable drawable) {
        update();
        render(drawable);
    }

    @Override
    public void dispose(GLAutoDrawable drawable) {
    }

    @Override
    public void init(GLAutoDrawable drawable) {
    }

    @Override
    public void reshape(GLAutoDrawable drawable, int x, int y, int w, int h) {
    }

    private void update() {
        theta += 0.01;
        s = Math.sin(theta);
        c = Math.cos(theta);
    }

    private void render(GLAutoDrawable drawable) {
        GL2 gl = drawable.getGL().getGL2();

        gl.glClear(GL.GL_COLOR_BUFFER_BIT);

        // draw a triangle filling the window
        gl.glBegin(GL.GL_TRIANGLES);
        gl.glColor3f(1, 0, 0);
        gl.glVertex2d(-c, -c);
        gl.glColor3f(0, 1, 0);
        gl.glVertex2d(0, c);
        gl.glColor3f(0, 0, 1);
        gl.glVertex2d(s, -s);
        gl.glEnd();
    }
}

Any input would be greatly appreciated!
Thanks in advance!