Multitexuring Using ARB - Java-Gaming.org

Hey everyone, i am trying to use multitexture in JOGL and keep getting a compilation error. For some reason the program doesnt not understand what GL.GL_MAX_TEXTURE_UNITS_ARB and what GL.GL_TEXTURE0_ARB are. I have had no other issues with my program except these. I have the following imports and my code is also below. I really appreciate the help and what to thank everyone in advance.

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import javax.media.opengl.GL;
import javax.vecmath.Point3f;

   public void draw (GL gl)
   {
      gl.glClear(gl.GL_COLOR_BUFFER_BIT | gl.GL_DEPTH_BUFFER_BIT);
      
      for(int i = 0; i < getNumFaces(); i++)
       {
          LevelFace face = getLevelFace(i);
          
          if(face.getType() != 1) 
             continue;

          gl.glActiveTextureARB(GL.GL_TEXTURE0_ARB);
           gl.glEnable(gl.GL_TEXTURE_2D);
         gl.glBindTexture(gl.GL_TEXTURE_2D, m_textures[pFace->texID].ID);
          
          gl.glPolygonMode(gl.GL_FRONT_AND_BACK, gl.GL_LINE);
          
           gl.glBegin(gl.GL_TRIANGLE_FAN);

           for(int j = face.getStartVertexIndex(); j < face.getStartVertexIndex() + face.getTotalVertices(); j++)
           {
              Point3f vertex = getVertex(j);
                  
              gl.glVertex3f(vertex.x, vertex.y, vertex.z);
           }// for

           gl.glEnd();
           
           gl.glPolygonMode(gl.GL_FRONT_AND_BACK, gl.GL_FILL);
       
       }// for
      
   }// draw

The other file

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import java.awt.*;
import java.awt.event.*;

import javax.media.opengl.*;
import javax.media.opengl.glu.GLU;

import Level.*;
import LevelLoader.LevelLoader;

import com.sun.opengl.util.*;

   public static void main(String[] args) {
    
      Frame frame = new Frame("Counter Strike");
       GLCanvas canvas = new GLCanvas();
       
       canvas.addGLEventListener(new WarthogStrike());
       frame.add(canvas);
       frame.setSize(800, 600);
      
       // Creates a thread that calls the display function for that drawable object
       final Animator animator = new Animator(canvas);

...
}

     public void init(GLAutoDrawable drawable) {
       // Use debug pipeline
       // drawable.setGL(new DebugGL(drawable.getGL()));
        
      fpsDisplay = new DisplayFPS (drawable);
      
       GL gl = drawable.getGL();       
       
       String extensions = gl.glGetString(GL.GL_EXTENSIONS);
       boolean bMultiTexturing = (extensions.indexOf("GL_ARB_multitexture") !=-1);
       
       if (!bMultiTexturing)
          System.err.println("MultiTexturing Disabled");
       
       int[] maxTextureUnits = new int[1];
   
       gl.glGetIntegerv(gl.GL_MAX_TEXTURE_UNITS_ARB, maxTextureUnits);
       
       int nbTextureUnits = maxTextureUnits[0];
       
       System.out.println("Texture Units available = " + nbTextureUnits);

       
       System.err.println("INIT GL IS: " + gl.getClass().getName());
   
       System.err.println("Chosen GLCapabilities: " + drawable.getChosenGLCapabilities());
   
       gl.setSwapInterval(1);

       gl.glEnable(GL.GL_DEPTH_TEST);               
                   
       drawable.addMouseListener(mouseEvents);
       drawable.addMouseMotionListener(mouseEvents);
       drawable.addKeyListener(keyEvents);
       
       LevelLoader loader = new LevelLoader();
       
       loader.loadLevel("src/LevelFiles/level2.bsp");
       currentLevel = loader.getLevel();
       
       camera = new Camera();
       
       camera.setCamera(0, 800, -150, 0, 150, -149, 0, 1, 0);
     }