My JOGL program refuses to run what is wrong? - jogl

Question

here is my code
public class SimpleJoglApp extends JFrame {
public static void main(String[] args) {
final SimpleJoglApp app = new SimpleJoglApp();
// show what we've done
SwingUtilities.invokeLater(new Runnable() {
public void run() {
app.setVisible(true);
}
});
}
public SimpleJoglApp() {
// set the JFrame title
super("Test App");
// kill the process when the JFrame is closed
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// only two JOGL lines of code ... and here they are
GLCanvas glcanvas = new GLCanvas();
glcanvas.addGLEventListener(new SecondGLEventListener());
// add the GLCanvas just like we would any Component
getContentPane().add("Center", glcanvas);
setSize(500, 300);
}
public void centerWindow(Component frame) {
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
Dimension frameSize = frame.getSize();
if (frameSize.width > screenSize.width) {
frameSize.width = screenSize.width;
}
if (frameSize.height > screenSize.height) {
frameSize.height = screenSize.height;
}
frame.setLocation((screenSize.width - frameSize.width) >> 1, (screenSize.height - frameSize.height) >> 1);
}
public class SecondGLEventListener implements GLEventListener {
/**
* Interface to the GLU library.
*/
private GLU glu;
public void init(GLAutoDrawable drawable) {
GL gl = drawable.getGL();
glu = new GLU();
gl.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
gl.glViewport(0, 0, 500, 300);
gl.glMatrixMode(GL.GL_PROJECTION);
gl.glLoadIdentity();
glu.gluOrtho2D(0.0, 500.0, 0.0, 300.0);
}
/**
* Take care of drawing here.
*/
public void display(GLAutoDrawable drawable) {
float red = 0.0f;
float green = 0.0f;
float blue = 0.0f;
GL gl = drawable.getGL();
gl.glClear(GL.GL_COLOR_BUFFER_BIT);
gl.glPointSize(20.0f);
for (int i = 0; i < 10; i++) {
red -= .09f;
green -= .12f;
blue -= .15f;
if (red < 0.50) {
red = 0.5f;
}
if (green < 0.15) {
green = 0.5f;
}
if (blue < 0.15) {
blue = 0.5f;
}
gl.glPushMatrix();
gl.glColor3f(red, green, blue);
gl.glTranslatef(10.0f, 500.0f, 0.0f); // Move left 1.5 units, up 1.5 units, and back 8 units
gl.glBegin(GL.GL_QUADS); // Begin drawing quads
gl.glVertex3f((10f * i) + 10, 20.0f, 0.0f); // Top left vertex
gl.glVertex3f((40f * i) + 10, 20f, 0.0f); // Top right vertex
gl.glVertex3f((40f * i) + 10, -20f, 0.0f); // Bottom right vertex
gl.glVertex3f((10f * i) + 10, -20.0f, 0.0f); // Bottom left vertex
gl.glEnd();
gl.glPopMatrix();
}
}
public void reshape(GLAutoDrawable drawable, int x, int y, int width, int height) {}
public void displayChanged(GLAutoDrawable drawable, boolean modeChanged, boolean deviceChanged) {}
}
}
`
//~ Formatted by Jindent --- http://www.jindent.com
the code always produces the following error
Error: Could not find or load main class org.yourorghere.SimpleJoglApp
Java Result: 1
What am i doing wrong?

Answer 1

You never set the jframe.setvisible(true);
Also: Error: Could not find or load main class org.yourorghere.SimpleJoglApp Java Result: 1
has nothing to do with java. Just fix your classes set up.