Annotation processing got disabled, since it requires a 1.6 compliant JVM

Can anyone help me with this error?

“Annotation processing got disabled, since it requires a 1.6 compliant JVM”

I am running a sketch in Processing 2.2.1 on a Pi 3B+ and I get this error no matter what sketch I try to run.

Thanks in advance.

Possibly related – it mentions the same “Annotation processing got disabled” error:

so on the actual RASPBIAN i see

java -version
java version "1.8.0_65"
Java(TM) SE Runtime Environment (build 1.8.0_65-b17)
Java HotSpot(TM) Client VM (build 25.65-b01, mixed mode)


apt-cache search openjdk
find only

and also not want to check how to install a older version…
but here
have a list of old systems,
just need to find out what java they use (when).
also see:

in my own BLOG i see Nov 2013
a test

#________________________try upgrade to new version
tar -xvzf processing-2.1-linux32.tgz
cd /home/pi/processing-2.1/
rm -rf java
ln -s /usr/lib/jvm/java-6-openjdk-armhf java

failed and i changed back

change back to processing version 2.0.3

tar -xvzf processing-2.0.3-linux32.tgz
cd /home/pi/processing-2.0.3/
rm -rf java
ln -s /usr/lib/jvm/java-6-openjdk-armhf java

mv modes/java/libraries/serial/library/linux32/ 


mv modes/java/libraries/serial/library/RXTXcomm.jar 

cp /usr/share/java/RXTXcomm.jar modes/java/libraries/serial/library/

sorry not sure but i think it was still on
NOOBS v1.3

info from 2014

pls. give us a few words why you are on that museums trip
do you have the situation that you have some old code
what not work under processing IDE 3.4?
and would it be worth to down / back-grade OS/JAVA(not hardfloat)/processing?
for about 5 years back?

1 Like

Thanks to the both of you for you replies and sorry for the delay.

I am new to processing and I have seen both of the posts that you mention in my research prior to posting my question but as I am new to processing I did not think that they applied. As I write this I am still confused and do not know if there is a solution for my issue.


I am trying to build up an Adalight setup and I have gotten it running on a Windows 7 machine as well as a Linux Mint machine however when I go to transfer it over to it’s final home, the Pi 3B+ I get the above error.

According to the Adafruit Adalight documentation there are know issues with running the processing sketch on Processing 3 so this is why I am trying to run Processing 2.2.1 on the Pi. Again I have managed to get Processing 2.2.1 working on both the Windows 7 & Mint builds. Because of this I am hopeful that there is something simple that I am missing with the Pi.

When I try and run Processing 3.4 on the Pi I get an error where it tells me that it cannot determine the size of the sketch and that I need to determine a numeric value for the size of the sketch rather than the equation that the Sketch currently uses to calculate the size. Is the better solution to fix the code/sketch so that it can run on Processing 3.4?

// "Adalight" is a do-it-yourself facsimile of the Philips Ambilight concept
// for desktop computers and home theater PCs.  This is the host PC-side code
// written in Processing, intended for use with a USB-connected Arduino
// microcontroller running the accompanying LED streaming code.  Requires one
// or more strands of Digital RGB LED Pixels (Adafruit product ID #322,
// specifically the newer WS2801-based type, strand of 25) and a 5 Volt power
// supply (such as Adafruit #276).  You may need to adapt the code and the
// hardware arrangement for your specific display configuration.
// Screen capture adapted from code by Cedrik Kiefer ( forum)

// --------------------------------------------------------------------
//   This file is part of Adalight.

//   Adalight is free software: you can redistribute it and/or modify
//   it under the terms of the GNU Lesser General Public License as
//   published by the Free Software Foundation, either version 3 of
//   the License, or (at your option) any later version.

//   Adalight is distributed in the hope that it will be useful,
//   but WITHOUT ANY WARRANTY; without even the implied warranty of
//   GNU Lesser General Public License for more details.

//   You should have received a copy of the GNU Lesser General Public
//   License along with Adalight.  If not, see
//   <>.
// --------------------------------------------------------------------

import java.awt.*;
import java.awt.image.*;
import processing.serial.*;

// CONFIGURABLE PROGRAM CONSTANTS --------------------------------------------

// Minimum LED brightness; some users prefer a small amount of backlighting
// at all times, regardless of screen content.  Higher values are brighter,
// or set to 0 to disable this feature.

static final short minBrightness = 120;

// LED transition speed; it's sometimes distracting if LEDs instantaneously
// track screen contents (such as during bright flashing sequences), so this
// feature enables a gradual fade to each new LED state.  Higher numbers yield
// slower transitions (max of 255), or set to 0 to disable this feature
// (immediate transition of all LEDs).

static final short fade = 75;

// Pixel size for the live preview image.

static final int pixelSize = 20;

// Depending on many factors, it may be faster either to capture full
// screens and process only the pixels needed, or to capture multiple
// smaller sub-blocks bounding each region to be processed.  Try both,
// look at the reported frame rates in the Processing output console,
// and run with whichever works best for you.

static final boolean useFullScreenCaps = true;

// Serial device timeout (in milliseconds), for locating Arduino device
// running the corresponding LEDstream code.  See notes later in the code...
// in some situations you may want to entirely comment out that block.

static final int timeout = 5000; // 5 seconds

// PER-DISPLAY INFORMATION ---------------------------------------------------

// This array contains details for each display that the software will
// process.  If you have screen(s) attached that are not among those being
// "Adalighted," they should not be in this list.  Each triplet in this
// array represents one display.  The first number is the system screen
// number...typically the "primary" display on most systems is identified
// as screen #1, but since arrays are indexed from zero, use 0 to indicate
// the first screen, 1 to indicate the second screen, and so forth.  This
// is the ONLY place system screen numbers are used...ANY subsequent
// references to displays are an index into this list, NOT necessarily the
// same as the system screen number.  For example, if you have a three-
// screen setup and are illuminating only the third display, use '2' for
// the screen number here...and then, in subsequent section, '0' will be
// used to refer to the first/only display in this list.
// The second and third numbers of each triplet represent the width and
// height of a grid of LED pixels attached to the perimeter of this display.
// For example, '9,6' = 9 LEDs across, 6 LEDs down.

static final int displays[][] = new int[][] {
//   {0,9,6} // Screen 0, 9 LEDs across, 6 LEDs down
   {0,19,10} // Screen 0, 19 LEDs across, 10 LEDs down
//,{1,9,6} // Screen 1, also 9 LEDs across and 6 LEDs down

// PER-LED INFORMATION -------------------------------------------------------

// This array contains the 2D coordinates corresponding to each pixel in the
// LED strand, in the order that they're connected (i.e. the first element
// here belongs to the first LED in the strand, second element is the second
// LED, and so forth).  Each triplet in this array consists of a display
// number (an index into the display array above, NOT necessarily the same as
// the system screen number) and an X and Y coordinate specified in the grid
// units given for that display.  {0,0,0} is the top-left corner of the first
// display in the array.
// For our example purposes, the coordinate list below forms a ring around
// the perimeter of a single screen, with a one pixel gap at the bottom to
// accommodate a monitor stand.  Modify this to match your own setup:

static final int leds[][] = new int[][] {
  {0,3,9}, {0,2,9}, {0,1,9}, {0,0,9}, // Bottom edge, left half
           {0,7,9}, {0,6,9}, {0,5,9}, {0,4,9}, 
  {0,0,4}, {0,0,3}, {0,0,2}, {0,0,1}, // Left edge
           {0,0,8}, {0,0,7}, {0,0,6}, {0,0,5}, // Left edge
  {0,0,0}, {0,1,0}, {0,2,0}, {0,3,0}, {0,4,0}, // Top edge
           {0,5,0}, {0,6,0}, {0,7,0}, {0,8,0}, // More top edge
           {0,9,0}, {0,10,0}, {0,11,0}, {0,12,0},
           {0,13,0}, {0,14,0}, {0,15,0}, {0,16,0},
           {0,17,0}, {0,18,0},
  {0,18,1}, {0,18,2}, {0,18,3}, {0,18,4}, // Right edge
            {0,18,5}, {0,18,6}, {0,18,7}, {0,18,8},
  {0,14,9}, {0,13,9}, {0,12,9}, {0,11,9},  // Bottom edge, right half
            {0,18,9}, {0,17,9}, {0,16,9}, {0,15,9}

/* Hypothetical second display has the same arrangement as the first.
   But you might not want both displays completely ringed with LEDs;
   the screens might be positioned where they share an edge in common.
 ,{1,3,5}, {1,2,5}, {1,1,5}, {1,0,5}, // Bottom edge, left half
  {1,0,4}, {1,0,3}, {1,0,2}, {1,0,1}, // Left edge
  {1,0,0}, {1,1,0}, {1,2,0}, {1,3,0}, {1,4,0}, // Top edge
           {1,5,0}, {1,6,0}, {1,7,0}, {1,8,0}, // More top edge
  {1,8,1}, {1,8,2}, {1,8,3}, {1,8,4}, // Right edge
  {1,8,5}, {1,7,5}, {1,6,5}, {1,5,5}  // Bottom edge, right half

// GLOBAL VARIABLES ---- You probably won't need to modify any of this -------

byte[]           serialData  = new byte[6 + leds.length * 3];
short[][]        ledColor    = new short[leds.length][3],
                 prevColor   = new short[leds.length][3];
byte[][]         gamma       = new byte[256][3];
int              nDisplays   = displays.length;
Robot[]          bot         = new Robot[displays.length];
Rectangle[]      dispBounds  = new Rectangle[displays.length],
                 ledBounds;  // Alloc'd only if per-LED captures
int[][]          pixelOffset = new int[leds.length][256],
                 screenData; // Alloc'd only if full-screen captures
PImage[]         preview     = new PImage[displays.length];
Serial           port;
DisposeHandler   dh; // For disabling LEDs on exit

// INITIALIZATION ------------------------------------------------------------

void setup() {
  GraphicsEnvironment     ge;
  GraphicsConfiguration[] gc;
  GraphicsDevice[]        gd;
  int                     d, i, totalWidth, maxHeight, row, col, rowOffset;
  int[]                   x = new int[16], y = new int[16];
  float                   f, range, step, start;

  dh = new DisposeHandler(this); // Init DisposeHandler ASAP


  // Open serial port.  As written here, this assumes the Arduino is the
  // first/only serial device on the system.  If that's not the case,
  // change "Serial.list()[0]" to the name of the port to be used:
//  port = new Serial(this, Serial.list()[1], 115200);
  // Alternately, in certain situations the following line can be used
  // to detect the Arduino automatically.  But this works ONLY with SOME
  // Arduino boards and versions of Processing!  This is so convoluted
  // to explain, it's easier just to test it yourself and see whether
  // it works...if not, leave it commented out and use the prior port-
  // opening technique.
port = openPort();
  // And finally, to test the software alone without an Arduino connected,
  // don't open a port...just comment out the serial lines above.

  // Initialize screen capture code for each display's dimensions.
  dispBounds = new Rectangle[displays.length];
  if(useFullScreenCaps == true) {
    screenData = new int[displays.length][];
    // ledBounds[] not used
  } else {
    ledBounds  = new Rectangle[leds.length];
    // screenData[][] not used
  ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
  gd = ge.getScreenDevices();
  if(nDisplays > gd.length) nDisplays = gd.length;
  totalWidth = maxHeight = 0;
  for(d=0; d<nDisplays; d++) { // For each display...
    try {
      bot[d] = new Robot(gd[displays[d][0]]);
    catch(AWTException e) {
      System.out.println("new Robot() failed");
    gc              = gd[displays[d][0]].getConfigurations();
    dispBounds[d]   = gc[0].getBounds();
    dispBounds[d].x = dispBounds[d].y = 0;
    preview[d]      = createImage(displays[d][1], displays[d][2], RGB);
    totalWidth     += displays[d][1];
    if(d > 0) totalWidth++;
    if(displays[d][2] > maxHeight) maxHeight = displays[d][2];

  // Precompute locations of every pixel to read when downsampling.
  // Saves a bunch of math on each frame, at the expense of a chunk
  // of RAM.  Number of samples is now fixed at 256; this allows for
  // some crazy optimizations in the downsampling code.
  for(i=0; i<leds.length; i++) { // For each LED...
    d = leds[i][0]; // Corresponding display index

    // Precompute columns, rows of each sampled point for this LED
    range = (float)dispBounds[d].width / (float)displays[d][1];
    step  = range / 16.0;
    start = range * (float)leds[i][1] + step * 0.5;
    for(col=0; col<16; col++) x[col] = (int)(start + step * (float)col);
    range = (float)dispBounds[d].height / (float)displays[d][2];
    step  = range / 16.0;
    start = range * (float)leds[i][2] + step * 0.5;
    for(row=0; row<16; row++) y[row] = (int)(start + step * (float)row);

    if(useFullScreenCaps == true) {
      // Get offset to each pixel within full screen capture
      for(row=0; row<16; row++) {
        for(col=0; col<16; col++) {
          pixelOffset[i][row * 16 + col] =
            y[row] * dispBounds[d].width + x[col];
    } else {
      // Calc min bounding rect for LED, get offset to each pixel within
      ledBounds[i] = new Rectangle(x[0], y[0], x[15]-x[0]+1, y[15]-y[0]+1);
      for(row=0; row<16; row++) {
        for(col=0; col<16; col++) {
          pixelOffset[i][row * 16 + col] =
            (y[row] - y[0]) * ledBounds[i].width + x[col] - x[0];

  for(i=0; i<prevColor.length; i++) {
    prevColor[i][0] = prevColor[i][1] = prevColor[i][2] =
      minBrightness / 3;

  // Preview window shows all screens side-by-side
  size(totalWidth * pixelSize, maxHeight * pixelSize, JAVA2D);

  // A special header / magic word is expected by the corresponding LED
  // streaming code running on the Arduino.  This only needs to be initialized
  // once (not in draw() loop) because the number of LEDs remains constant:
  serialData[0] = 'A';                              // Magic word
  serialData[1] = 'd';
  serialData[2] = 'a';
  serialData[3] = (byte)((leds.length - 1) >> 8);   // LED count high byte
  serialData[4] = (byte)((leds.length - 1) & 0xff); // LED count low byte
  serialData[5] = (byte)(serialData[3] ^ serialData[4] ^ 0x55); // Checksum

  // Pre-compute gamma correction table for LED brightness levels:
  for(i=0; i<256; i++) {
    f           = pow((float)i / 255.0, 2.8);
    gamma[i][0] = (byte)(f * 255.0);
    gamma[i][1] = (byte)(f * 240.0);
    gamma[i][2] = (byte)(f * 220.0);

// Open and return serial connection to Arduino running LEDstream code.  This
// attempts to open and read from each serial device on the system, until the
// matching "Ada\n" acknowledgement string is found.  Due to the serial
// timeout, if you have multiple serial devices/ports and the Arduino is late
// in the list, this can take seemingly if you KNOW the Arduino
// will always be on a specific port (e.g. "COM6"), you might want to comment
// out most of this to bypass the checks and instead just open that port
// directly!  (Modify last line in this method with the serial port name.)

Serial openPort() {
  String[] ports;
  String   ack;
  int      i, start;
  Serial   s;

  ports = Serial.list(); // List of all serial ports/devices on system.

  for(i=0; i<ports.length; i++) { // For each serial port...
    System.out.format("Trying serial port %s\n",ports[i]);
    try {
      s = new Serial(this, ports[i], 115200);
    catch(Exception e) {
      // Can't open port, probably in use by other software.
    // Port for acknowledgement string...
    start = millis();
    while((millis() - start) < timeout) {
      if((s.available() >= 4) &&
        ((ack = s.readString()) != null) &&
        ack.contains("Ada\n")) {
          return s; // Got it!
    // Connection timed out.  Close port and move on to the next.

  // Didn't locate a device returning the acknowledgment string.
  // Maybe it's out there but running the old LEDstream code, which
  // didn't have the ACK.  Can't say for sure, so we'll take our
  // changes with the first/only serial device out there...
  return new Serial(this, ports[0], 115200);

// PER_FRAME PROCESSING ------------------------------------------------------

void draw () {
  BufferedImage img;
  int           d, i, j, o, c, weight, rb, g, sum, deficit, s2;
  int[]         pxls, offs;

  if(useFullScreenCaps == true ) {
    // Capture each screen in the displays array.
    for(d=0; d<nDisplays; d++) {
      img = bot[d].createScreenCapture(dispBounds[d]);
      // Get location of source pixel data
      screenData[d] =

  weight = 257 - fade; // 'Weighting factor' for new frame vs. old
  j      = 6;          // Serial led data follows header / magic word

  // This computes a single pixel value filtered down from a rectangular
  // section of the screen.  While it would seem tempting to use the native
  // image scaling in Processing/Java, in practice this didn't look very
  // good -- either too pixelated or too blurry, no happy medium.  So
  // instead, a "manual" downsampling is done here.  In the interest of
  // speed, it doesn't actually sample every pixel within a block, just
  // a selection of 256 pixels spaced within the block...the results still
  // look reasonably smooth and are handled quickly enough for video.

  for(i=0; i<leds.length; i++) {  // For each LED...
    d = leds[i][0]; // Corresponding display index
    if(useFullScreenCaps == true) {
      // Get location of source data from prior full-screen capture:
      pxls = screenData[d];
    } else {
      // Capture section of screen (LED bounds rect) and locate data::
      img  = bot[d].createScreenCapture(ledBounds[i]);
      pxls = ((DataBufferInt)img.getRaster().getDataBuffer()).getData();
    offs = pixelOffset[i];
    rb = g = 0;
    for(o=0; o<256; o++) {
      c   = pxls[offs[o]];
      rb += c & 0x00ff00ff; // Bit trickery: R+B can accumulate in one var
      g  += c & 0x0000ff00;

    // Blend new pixel value with the value from the prior frame
    ledColor[i][0]  = (short)((((rb >> 24) & 0xff) * weight +
                               prevColor[i][0]     * fade) >> 8);
    ledColor[i][1]  = (short)(((( g >> 16) & 0xff) * weight +
                               prevColor[i][1]     * fade) >> 8);
    ledColor[i][2]  = (short)((((rb >>  8) & 0xff) * weight +
                               prevColor[i][2]     * fade) >> 8);

    // Boost pixels that fall below the minimum brightness
    sum = ledColor[i][0] + ledColor[i][1] + ledColor[i][2];
    if(sum < minBrightness) {
      if(sum == 0) { // To avoid divide-by-zero
        deficit = minBrightness / 3; // Spread equally to R,G,B
        ledColor[i][0] += deficit;
        ledColor[i][1] += deficit;
        ledColor[i][2] += deficit;
      } else {
        deficit = minBrightness - sum;
        s2      = sum * 2;
        // Spread the "brightness deficit" back into R,G,B in proportion to
        // their individual contribition to that deficit.  Rather than simply
        // boosting all pixels at the low end, this allows deep (but saturated)
        // colors to stay saturated...they don't "pink out."
        ledColor[i][0] += deficit * (sum - ledColor[i][0]) / s2;
        ledColor[i][1] += deficit * (sum - ledColor[i][1]) / s2;
        ledColor[i][2] += deficit * (sum - ledColor[i][2]) / s2;

    // Apply gamma curve and place in serial output buffer
    serialData[j++] = gamma[ledColor[i][0]][0];
    serialData[j++] = gamma[ledColor[i][1]][1];
    serialData[j++] = gamma[ledColor[i][2]][2];
    // Update pixels in preview image
    preview[d].pixels[leds[i][2] * displays[d][1] + leds[i][1]] =
     (ledColor[i][0] << 16) | (ledColor[i][1] << 8) | ledColor[i][2];

  if(port != null) port.write(serialData); // Issue data to Arduino

  // Show live preview image(s)
  for(i=d=0; d<nDisplays; d++) {
    image(preview[d], i, 0);
    i += displays[d][1] + 1;

  println(frameRate); // How are we doing?

  // Copy LED color data to prior frame array for next pass
  arraycopy(ledColor, 0, prevColor, 0, ledColor.length);

// CLEANUP -------------------------------------------------------------------

// The DisposeHandler is called on program exit (but before the Serial library
// is shutdown), in order to turn off the LEDs (reportedly more reliable than
// stop()).  Seems to work for the window close box and escape key exit, but
// not the 'Quit' menu option.  Thanks to phi.lho in the Processing forums.

public class DisposeHandler {
  DisposeHandler(PApplet pa) {
  public void dispose() {
    // Fill serialData (after header) with 0's, and issue to Arduino...
//    Arrays.fill(serialData, 6, serialData.length, (byte)0);
    java.util.Arrays.fill(serialData, 6, serialData.length, (byte)0);
    if(port != null) port.write(serialData);
1 Like

Unfortunately I’m not able to test on that Pi right now and not familiar with Adalight specifically.

However, it sounds like this is ambilight-related – you might possibly be interested in this related project, and / or contacting the author to see if they have any ideas:

i found already 2 small things about the code
running here

DEBIAN stretch
Linux version 4.14.79-v7+
Raspberry Pi 3 Model B Plus Rev 1.3

but only with
sudo raspi-config G3 legacy GL
and just now no arduino connected

testing in Processing 3.4

-a- for setup
size try:

  // Preview window shows all screens side-by-side              
//  size(totalWidth * pixelSize, maxHeight * pixelSize, JAVA2D);
  //_________________________________________________________________________________________________ KLL
  println("totalWidth "+totalWidth);  // totalWidth 19
  println("pixelSize "+pixelSize);    // pixelSize 20
  println("maxHeight "+maxHeight);    // maxHeight 10
  println("pixelSize "+pixelSize);    // pixelSize 20
  size(380, 200, JAVA2D);  

-b- and at the end i needed:

public class DisposeHandler {
  DisposeHandler(PApplet pa) {
  //_________________________________________________________________________________________________ KLL
//    pa.registerDispose(this);

i hope that gives you a start

i would love to follow your project ( but not get the neo pixel /smart RGB LED here in town )
still when you post here pls. try to give more info
list and link required hardware , libraries, documentation

what is the concept?
arduino and 5V WS… LED strip could work alone,
Raspberry USB Arduino is also the right way to avoid 3v3 || 5v conflicts

but what would be the Raspberry’s job?

Raspberry processing could anyway not talk to the LED’s
as there is no library ( but there is one for python at Adafruit ))

1 Like

Thanks kll,

I’ll give this a try and see. I will let you know how I make out.

  • Z

Thanks again kll. Made the changes and it work with 3.4 the first time out. I lost a week trying to make 2.2.1 work.

Two more questions for you is there something I’m missing when it comes to exporting an application. I created the file on the Raspberry Pi itself and it ran once but it has never worked again. It either doesn’t open when launched or it opens to this a blank window.

Also I want to write a script so that this launches the export application every time I launch Kodi. Do I write the Processing script for Kodi or LibreELEC?

  • Z
1 Like

What does it say when you run it through the terminal?

sorry no idea about KODI
but for a autostart at boot see

note: many startups fail if you are not in that directory,
so a bash first makes a cd to that path for the app,
and then starts it.

and a .desktop starts the bash script, not the app

and i like to use the user autostart path, but there are many ways…