Packages

[adamtdisplay]

i am trying to import a package at the start of my program, before I import any classes. It is:-

package org.lwjgl.test.openal;

my question is, as the program is not finding the package nor it's classes, is where/how do i place the package on my system for it to be found? Do i have to set a classpath?

The error message is :

run:
Default device: Generic Software
Available devices:
0: Generic Software
Error setting up demonstration:
java.lang.NullPointerException
        at org.lwjgl.test.openal.PositionTest.setup(PositionTest.java:199)
        at org.lwjgl.test.openal.PositionTest.execute(PositionTest.java:128)
        at org.lwjgl.test.openal.PositionTest.main(PositionTest.java:485)
Java Result: -1
BUILD SUCCESSFUL (total time: 5 seconds)

Thanks

A

[Matzon]

looks like a missing resource - probably need to add it to the class path.

[adamtdisplay]

I opened the PositionTest class which is within the org.lwjgl.test.openal package and noticed on:-

import static org.lwjgl.openal.AL10.*;

it says :-

static import declarations are not supported in -source 1.4
  (use -source 5 or higher to enable static import declarations)

however i am using the latest LWJGL

Any ideas?

[avm1979]

Looks like you're compiling it for 1.4, and the code is using features that are supported in 1.5 and above.

I suggest reading up on javac and trying to learn the process a java program goes through from code to execution.  That'll help you figure out where the errors are occurring.

[adamtdisplay]

I am using jdk1.6.0_21 so it shouldn't be a problem.
Any other ideas?

Thanks

[Mickelukas]

The target of 1.4 doesn't have anything to do with your version of JDK What are you coding in? Eclipse? Netbeans? If you let us know we can tell you how to change your target

Mike

[adamtdisplay]

Hi Mike,

I am using Netbeans

[jediTofu]

Hi Mike,

I am using Netbeans

Tools->Java Platforms shows the list of JDK's you have set up.  Should be straight forward to add a new one.

In your project, go to project properties and the libraries category on left, and then you can select the java platform from a drop down menu at the top.

Unfortunately, there is no way to set which one is the default java platform through the GUI that I know of (so every time you create a new project, you'll have to change project properties).  You either have to edit your "netbeans.conf" file (just search for it) at the line with "netbeans_jdkhome" (haven't tested this) or you have to reinstall netbeans (this will pick up the latest JDK version; also, your settings should be saved, as it won't erase things in the home directory/user files, but to be safe you can go to Tools->Options and click export at bottom).

[adamtdisplay]

The default is already JDK 1.6.

Any other ideas as to the problem. For some reason everytime i write package........ at the start of my program , none are imported the red dot appears in the margin to the left. However if i were to write import........[specific class] which was within this previously unavailable package it would import and be avalable.

Not sure what i'm doing wrong.

All i want to do is import a few .wav files from my computer directory and not URL however I can't even get the example PositionTest from:
http://www.lwjgl.org/demos.php


ps. it's not the sound card

[jediTofu]

The default is already JDK 1.6.

Any other ideas as to the problem. For some reason everytime i write package........ at the start of my program , none are imported the red dot appears in the margin to the left. However if i were to write import........[specific class] which was within this previously unavailable package it would import and be avalable.

Not sure what i'm doing wrong.

All i want to do is import a few .wav files from my computer directory and not URL however I can't even get the example PositionTest from:
http://www.lwjgl.org/demos.php


ps. it's not the sound card

Well if this error you posted is still your problem:

"static import declarations are not supported in -source 1.4
  (use -source 5 or higher to enable static import declarations)"

Then the project is not set up to use 1.6 and is using 1.4.

[avm1979]

It seems you might be confused about what the package declaration does, too.  It says what package your class is in, rather than import everything from said package.

[CodeBunny]

Maybe you should post your code so we can see how you're trying to import?

[adamtdisplay]

Here's the code:

package org.lwjgl.test.openal;

import org.lwjgl.test.openal.PositionTest.*;


import java.nio.FloatBuffer;
import java.nio.IntBuffer;

import org.lwjgl.BufferUtils;
import org.lwjgl.LWJGLUtil;
import org.lwjgl.input.Keyboard;
import org.lwjgl.input.Mouse;
import org.lwjgl.openal.AL;
import org.lwjgl.openal.AL10;
import org.lwjgl.opengl.Display;
import org.lwjgl.opengl.GL11;
import org.lwjgl.util.glu.GLU;
import org.lwjgl.util.WaveData;

/**
 * <br>
 * This test demonstrates OpenAL positioning Based on the example by Chad Armstrong
 * (http://www.edenwaith.com/products/pige/tutorials/openal.php)
 *
 * @author Brian Matzon <brian@matzon.dk>
 * @version $Revision: 2983 $
 * $Id: PositionTest.java 2983 2008-04-07 18:36:09Z matzon $
 */
public class PositionTest extends BasicTest {

  /** *Small* glut implementation :) */
  private GLUT glut;

  /** Width of window */
  public static final int WINDOW_WIDTH = 640;

  /** Height of window */
  public static final int WINDOW_HEIGHT = 480;

  /** LEFT enumeration */
  public static final int LEFT = 0;

  /** CENTER enumeration */
  public static final int CENTER = 1;

  /** RIGHT enumeration */
  public static final int RIGHT = 2;

  /** Whether the demo is done */
  private boolean finished = false;

  /** Whether in pause mode */
  private boolean pauseMode = false;

  // OpenAL stuff
  // ===================================================

  /** OpenAL buffers */
  private IntBuffer soundBuffers = BufferUtils.createIntBuffer(3);

  /** OpenAL sources */
  private IntBuffer soundSources = BufferUtils.createIntBuffer(3);

  /** Position of listener */
  private FloatBuffer listenerPosition = createFloatBuffer(new float[] { 0.0f, 0.0f, 0.0f });

  /** Velocity of listener */
  private FloatBuffer listenerVelocity = createFloatBuffer(new float[] { 0.0f, 0.0f, 0.0f });

  /** Orientation of listener */
  private FloatBuffer listenerOrientation =
    createFloatBuffer(new float[] { 0.0f, 0.0f, 0.0f, 0.0f, 0.0f, 1.0f });

  /** Position of left sound */
  private FloatBuffer leftPosition = createFloatBuffer(new float[] { -2.0f, 0.0f, 0.0f });

  /** Velocity of left sound */
  private FloatBuffer leftVelocity = createFloatBuffer(new float[] { 0.0f, 0.0f, 0.0f });

  /** Position of center sound */
  private FloatBuffer centerPosition = createFloatBuffer(new float[] { 0.0f, 0.0f, -4.0f });

  /** Velocity of center sound */
  private FloatBuffer centerVelocity = createFloatBuffer(new float[] { 0.0f, 0.0f, 0.0f });

  /** Position of right sound */
  private FloatBuffer rightPosition = createFloatBuffer(new float[] { 2.0f, 0.0f, 0.0f });

  /** Velocity of right sound */
  private FloatBuffer rightVelocity = createFloatBuffer(new float[] { 0.0f, 0.0f, 0.0f });
  // ---------------------------------------------------

  /**
   * Runs the actual test, using supplied arguments
   */
  protected void execute(String[] args) {
    // Setup needed stuff
    try {
      setup();
    } catch (Exception e) {
      System.out.println("Error setting up demonstration: ");
      e.printStackTrace();
      System.exit(-1);
    }

    // run the actual demonstration
    run();

    // shutdown
    shutdown();
  }

  /**
   * Performs setup of demonstration
   */
  private void setup() throws Exception {

    // Setup Window
    // =====================================================
    LWJGLUtil.log("Setting up window");

    // calc center
    int centerX = (Display.getDisplayMode().getWidth() - WINDOW_WIDTH) / 2;
    int centerY = (Display.getDisplayMode().getHeight() - WINDOW_HEIGHT) / 2;

    // setup window
    setDisplayMode();
    Display.create();
    // -----------------------------------------------------

    // Setup OpenGL
    // =====================================================
    LWJGLUtil.log("Setting up OpenGL");

    GL11.glViewport(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
    GL11.glMatrixMode(GL11.GL_PROJECTION);
    GL11.glLoadIdentity();
    GLU.gluPerspective(50.0f, (float) WINDOW_WIDTH / WINDOW_HEIGHT, 0.0f, 50.0f);
    GL11.glMatrixMode(GL11.GL_MODELVIEW);
    GL11.glLoadIdentity();
    GL11.glTranslatef(0.0f, 0.0f, -6.6f);
    GL11.glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
    glut = this.new GLUT();

    Display.setVSyncEnabled(true);
    // -----------------------------------------------------

    // Setup OpenAL
    // =====================================================
    LWJGLUtil.log("C:/Program Files/Java/jdk1.6.0_21/ding.wav");

    AL10.alListener(AL10.AL_POSITION, listenerPosition);
    AL10.alListener(AL10.AL_VELOCITY, listenerVelocity);
    AL10.alListener(AL10.AL_ORIENTATION, listenerOrientation);

    // creating buffers
    LWJGLUtil.log("C:/Program Files/Java/jdk1.6.0_21/ding.wav");
    AL10.alGenBuffers(soundBuffers);
    soundBuffers.rewind();

    // creating sources
    AL10.alGenSources(soundSources);
    soundSources.rewind();

    // load sound files (left, center, right).wav
    LWJGLUtil.log("C:/Program Files/Java/jdk1.6.0_21/ding.wav");

    LWJGLUtil.log("C:/Program Files/Java/jdk1.6.0_21/ding.wav");
    WaveData left = WaveData.create("C:/Program Files/Java/jdk1.6.0_21/ding.wav");
    AL10.alBufferData(soundBuffers.get(LEFT), left.format, left.data, left.samplerate);
    AL10.alSourcef(soundSources.get(LEFT), AL10.AL_PITCH, 1.0f);
    AL10.alSourcef(soundSources.get(LEFT), AL10.AL_GAIN, 1.0f);
    AL10.alSource(soundSources.get(LEFT), AL10.AL_POSITION, leftPosition);
    AL10.alSource(soundSources.get(LEFT), AL10.AL_VELOCITY, leftVelocity);
    AL10.alSourcei(soundSources.get(LEFT), AL10.AL_BUFFER, soundBuffers.get(LEFT));
    AL10.alSourcei(soundSources.get(LEFT), AL10.AL_LOOPING, AL10.AL_TRUE);

    LWJGLUtil.log("C:/Program Files/Java/jdk1.6.0_21/ding.wav");
    WaveData center = WaveData.create("C:/Program Files/Java/jdk1.6.0_21/ding.wav");
    AL10.alBufferData(soundBuffers.get(CENTER), center.format, center.data, center.samplerate);
    AL10.alSourcef(soundSources.get(CENTER), AL10.AL_PITCH, 1.0f);
    AL10.alSourcef(soundSources.get(CENTER), AL10.AL_GAIN, 1.0f);
    AL10.alSource(soundSources.get(CENTER), AL10.AL_POSITION, centerPosition);
    AL10.alSource(soundSources.get(CENTER), AL10.AL_VELOCITY, centerVelocity);
    AL10.alSourcei(soundSources.get(CENTER), AL10.AL_BUFFER, soundBuffers.get(CENTER));
    AL10.alSourcei(soundSources.get(CENTER), AL10.AL_LOOPING, AL10.AL_TRUE);

    LWJGLUtil.log("C:/Program Files/Java/jdk1.6.0_21/ding.wav");
    WaveData right = WaveData.create("C:/Program Files/Java/jdk1.6.0_21/ding.wav");
    AL10.alBufferData(soundBuffers.get(RIGHT), right.format, right.data, right.samplerate);
    AL10.alSourcef(soundSources.get(RIGHT), AL10.AL_PITCH, 1.0f);
    AL10.alSourcef(soundSources.get(RIGHT), AL10.AL_GAIN, 1.0f);
    AL10.alSource(soundSources.get(RIGHT), AL10.AL_POSITION, rightPosition);
    AL10.alSource(soundSources.get(RIGHT), AL10.AL_VELOCITY, rightVelocity);
    AL10.alSourcei(soundSources.get(RIGHT), AL10.AL_BUFFER, soundBuffers.get(RIGHT));
    AL10.alSourcei(soundSources.get(RIGHT), AL10.AL_LOOPING, AL10.AL_TRUE);

    LWJGLUtil.log("C:/Program Files/Java/jdk1.6.0_21/ding.wav");
    // -----------------------------------------------------

    Mouse.setGrabbed(true);
  }

  /**
   * Runs the actual demonstration
   */
  private void run() {
    boolean firstRun = true;

    System.out.println("Press 1/4 (left), 2/5 (center) or 3/6 (right) to toggle sound");
    System.out.println("Press LEFT/RIGHT to move along x axis");
    System.out.println("Press SHIFT and either UP/DOWN to move along y axis");
    System.out.println("Press UP/DOWN to move along z axis");
    System.out.println("Move along the x and y axis with the mouse");
    System.out.println("Press LEFT or RIGHT mouse button to move along z axis");
    System.out.println("Press ESC to exit demo");

    LWJGLUtil.log(
      "Listener position: "
        + listenerPosition.get(0)
        + ", "
        + listenerPosition.get(1)
        + ", "
        + listenerPosition.get(2));
    LWJGLUtil.log("Left position: " + leftPosition.get(0) + ", " + leftPosition.get(1) + ", " + leftPosition.get(2));
    LWJGLUtil.log("Center position: " + centerPosition.get(0) + ", " + centerPosition.get(1) + ", " + centerPosition.get(2));
    LWJGLUtil.log("Right position: " + rightPosition.get(0) + ", " + rightPosition.get(1) + ", " + rightPosition.get(2));

    while (!finished) {
      // handle any input
      handleInput();

      // allow window to process internal messages
      Display.update();

      // render and paint if !minimized and not dirty
      if(Display.isVisible()) {
        render();
      } else {
        // sleeeeeep
        pause(100);
      }

      // act on pause mode
      paused(!(Display.isVisible() || Display.isActive()));

      // start sound after first paint, since we don't want
      // the delay before something is painted on the screen
      if (firstRun && !pauseMode) {
        firstRun = false;

        // start sounds with delays
        startSounds();
      }
    }
  }

  /**
   * Starts playing the sounds at different times
   */
  private void startSounds() {
    AL10.alSourcePlay(soundSources.get(LEFT));
    pause(300);
    AL10.alSourcePlay(soundSources.get(CENTER));
    pause(500);
    AL10.alSourcePlay(soundSources.get(RIGHT));
  }

  /**
   * Handles any changes in pause mode
   *
   * @param paused Which pause mode to enter
   */
  private void paused(boolean paused) {
    // if requesting pause, and not paused - pause and stop sound
    if(paused && !pauseMode) {
      pauseMode = true;
      AL10.alSourcePause(soundSources);
      System.out.println("pauseMode = true");
    }

    // else go out of pause mode and start sounds
    else if(!paused && pauseMode) {
      pauseMode = false;
      startSounds();
      System.out.println("pauseMode = false");
    }
  }

  /**
   * Handles any input
   */
  private void handleInput() {
    // User wants to exit?
    finished = Display.isCloseRequested() || Keyboard.isKeyDown(Keyboard.KEY_ESCAPE);
    if (finished) {
      return;
    }

    boolean shift = Keyboard.isKeyDown(Keyboard.KEY_LSHIFT) || Keyboard.isKeyDown(Keyboard.KEY_RSHIFT);

    // Test for play
    // ============================================
    if (Keyboard.isKeyDown(Keyboard.KEY_1)) {
      AL10.alSourcePlay(soundSources.get(LEFT));
      LWJGLUtil.log("C:/Program Files/Java/jdk1.6.0_21/ding.wav");
    }

    if (Keyboard.isKeyDown(Keyboard.KEY_2)) {
      AL10.alSourcePlay(soundSources.get(CENTER));
      LWJGLUtil.log("C:/Program Files/Java/jdk1.6.0_21/ding.wav");
    }

    if (Keyboard.isKeyDown(Keyboard.KEY_3)) {
      AL10.alSourcePlay(soundSources.get(RIGHT));
      LWJGLUtil.log("C:/Program Files/Java/jdk1.6.0_21/ding.wav");
    }
    // --------------------------------------------

    // Test for stop
    // ============================================
    if (Keyboard.isKeyDown(Keyboard.KEY_4)) {
      AL10.alSourceStop(soundSources.get(LEFT));
      LWJGLUtil.log("C:/Program Files/Java/jdk1.6.0_21/ding.wav");
    }

    if (Keyboard.isKeyDown(Keyboard.KEY_5)) {
      AL10.alSourceStop(soundSources.get(CENTER));
      LWJGLUtil.log("C:/Program Files/Java/jdk1.6.0_21/ding.wav");
    }

    if (Keyboard.isKeyDown(Keyboard.KEY_6)) {
      AL10.alSourceStop(soundSources.get(RIGHT));
      LWJGLUtil.log("C:/Program Files/Java/jdk1.6.0_21/ding.wav");
    }
    // --------------------------------------------

    // Test for movement with keyboard
    // ============================================
    if (Keyboard.isKeyDown(Keyboard.KEY_LEFT)) {
      listenerPosition.put(0, listenerPosition.get(0) - 0.1f);
      AL10.alListener(AL10.AL_POSITION, listenerPosition);
    }

    if (Keyboard.isKeyDown(Keyboard.KEY_RIGHT)) {
      listenerPosition.put(0, listenerPosition.get(0) + 0.1f);
      AL10.alListener(AL10.AL_POSITION, listenerPosition);
    }

    if (Keyboard.isKeyDown(Keyboard.KEY_UP)) {
      if (shift) {
        listenerPosition.put(1, listenerPosition.get(1) + 0.1f);
      } else {
        listenerPosition.put(2, listenerPosition.get(2) - 0.1f);
      }
      AL10.alListener(AL10.AL_POSITION, listenerPosition);
    }

    if (Keyboard.isKeyDown(Keyboard.KEY_DOWN)) {
      if (shift) {
        listenerPosition.put(1, listenerPosition.get(1) - 0.1f);
      } else {
        listenerPosition.put(2, listenerPosition.get(2) + 0.1f);
      }
      AL10.alListener(AL10.AL_POSITION, listenerPosition);
    }
    // --------------------------------------------

    // Test for movement with Mouse
    // ============================================
    listenerPosition.put(0, listenerPosition.get(0) + (0.01f * Mouse.getDX()));
    listenerPosition.put(1, listenerPosition.get(1) + (0.01f * Mouse.getDY()));
    if (Mouse.isButtonDown(0)) {
      listenerPosition.put(2, listenerPosition.get(2) - 0.1f);
    }
    if (Mouse.isButtonDown(1)) {
      listenerPosition.put(2, listenerPosition.get(2) + 0.1f);
    }

    AL10.alListener(AL10.AL_POSITION, listenerPosition);

    // empty mouse buffer
    while(Mouse.next());
  }

  /**
   * Render the scene
   */
  private void render() {
    GL11.glClear(GL11.GL_COLOR_BUFFER_BIT | GL11.GL_DEPTH_BUFFER_BIT);
    GL11.glPushMatrix();
    {
      GL11.glRotatef(20.0f, 1.0f, 1.0f, 0.0f);

      // left
      GL11.glPushMatrix();
      {
        GL11.glTranslatef(leftPosition.get(0), leftPosition.get(1), leftPosition.get(2));
        GL11.glColor3f(1.0f, 0.0f, 0.0f);
        glut.glutWireCube(0.5f);
      }
      GL11.glPopMatrix();

      // center
      GL11.glPushMatrix();
      {
        GL11.glTranslatef(centerPosition.get(0), centerPosition.get(1), centerPosition.get(2));
        GL11.glColor3f(0.0f, 0.0f, 1.0f);
        glut.glutWireCube(0.5f);
      }
      GL11.glPopMatrix();

      // right
      GL11.glPushMatrix();
      {
        GL11.glTranslatef(rightPosition.get(0), rightPosition.get(1), rightPosition.get(2));
        GL11.glColor3f(0.0f, 1.0f, 0.0f);
        glut.glutWireCube(0.5f);
      }
      GL11.glPopMatrix();

      // listener
      GL11.glPushMatrix();
      {
        GL11.glTranslatef(listenerPosition.get(0), listenerPosition.get(1), listenerPosition.get(2));
        GL11.glColor3f(1.0f, 1.0f, 1.0f);
        glut.glutSolidCube(0.5f);
      }
      GL11.glPopMatrix();
    }
    GL11.glPopMatrix();
  }

  /**
   * Shutdown of demonstration
   */
  private void shutdown() {
    LWJGLUtil.log("Shutting down OpenAL");
    AL10.alSourceStop(soundSources);
    AL10.alDeleteSources(soundSources);
    AL10.alDeleteBuffers(soundBuffers);
    AL.destroy();

    LWJGLUtil.log("Shutting down Window");
    Display.destroy();
  }

  /**
   * main entry point
   *
   * @param args
   *          String array containing arguments
   */
  public static void main(String[] args) {
    PositionTest positionTest = new PositionTest();
    positionTest.execute(args);
    System.exit(0);
  }

  /**
   * Minute implementation of GLUT: <br>COPYRIGHT:
   *
   * The OpenGL Utility Toolkit distribution for Win32 (Windows NT & Windows
   * 95) contains source code modified from the original source code for GLUT
   * version 3.3 which was developed by Mark J. Kilgard. The original source
   * code for GLUT is Copyright 1997 by Mark J. Kilgard. GLUT for Win32 is
   * Copyright 1997 by Nate Robins and is not in the public domain, but it is
   * freely distributable without licensing fees. It is provided without
   * guarantee or warrantee expressed or implied. It was ported with the
   * permission of Mark J. Kilgard by Nate Robins.
   *
   * THIS SOURCE CODE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER
   * EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
   * OR MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
   */
  class GLUT {

    float n[][] = new float[][] { { -1.0f, 0.0f, 0.0f }, {
        0.0f, 1.0f, 0.0f }, {
        1.0f, 0.0f, 0.0f }, {
        0.0f, -1.0f, 0.0f }, {
        0.0f, 0.0f, 1.0f }, {
        0.0f, 0.0f, -1.0f }
    };

    int faces[][] = new int[][] { { 0, 1, 2, 3 }, {
        3, 2, 6, 7 }, {
        7, 6, 5, 4 }, {
        4, 5, 1, 0 }, {
        5, 6, 2, 1 }, {
        7, 4, 0, 3 }
    };
    float v[][] = new float[8][3];

    public void glutWireCube(float size) {
      drawBox(size, GL11.GL_LINE_LOOP);
    }

    public void glutSolidCube(float size) {
      drawBox(size, GL11.GL_QUADS);
    }

    private void drawBox(float size, int type) {

      v[0][0] = v[1][0] = v[2][0] = v[3][0] = -size / 2;
      v[4][0] = v[5][0] = v[6][0] = v[7][0] = size / 2;
      v[0][1] = v[1][1] = v[4][1] = v[5][1] = -size / 2;
      v[2][1] = v[3][1] = v[6][1] = v[7][1] = size / 2;
      v[0][2] = v[3][2] = v[4][2] = v[7][2] = -size / 2;
      v[1][2] = v[2][2] = v[5][2] = v[6][2] = size / 2;

      for (int i = 5; i >= 0; i--) {
        GL11.glBegin(type);
        GL11.glNormal3f(n[i][0], n[i][1], n[i][2]);
        GL11.glVertex3f(v[faces[i][0]][0], v[faces[i][0]][1], v[faces[i][0]][2]);
        GL11.glVertex3f(v[faces[i][1]][0], v[faces[i][1]][1], v[faces[i][1]][2]);
        GL11.glVertex3f(v[faces[i][2]][0], v[faces[i][2]][1], v[faces[i][2]][2]);
        GL11.glVertex3f(v[faces[i][3]][0], v[faces[i][3]][1], v[faces[i][3]][2]);
        GL11.glEnd();
      }

    }
  }
}



And here's the error report:

run:
Default device: Generic Software
Available devices: 
0: Generic Software
Error setting up demonstration: 
java.lang.NullPointerException
        at org.lwjgl.test.openal.PositionTest.setup(PositionTest.java:199)
        at org.lwjgl.test.openal.PositionTest.execute(PositionTest.java:128)
        at org.lwjgl.test.openal.PositionTest.main(PositionTest.java:485)
Java Result: -1
BUILD SUCCESSFUL (total time: 2 seconds)

Thanks in advance

A