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    <p>For memory leaks in java you might look into packratting. I haven't found a great solution for processing other than running </p> <blockquote> <p>top -s 5</p> </blockquote> <p>(on unix systems) and watching the memory usage until it hangs. I recently worked on a datavis project where I was creating potentially thousands of blitts (in my case images of text to use in opengl) in an ArrayList. Originally I was recreating these arrays on the fly everytime I would load data and it was contributing to a "memory leak".</p> <p>In my case I tried nulling out the object references and calling the garbage collector specifically. I think it may have to do with the fact that processing is calling your void draw() method potentially 60+ times per second, but it seems that it never seemed to let go of the references.</p> <p>What I did to correct the issue was to load all the images / create the blits only once in the setup method() and only to append new items to the ArrayList when there was new data. </p> <p>Prior to this I would just recreate the entire ArrayList on the fly, because it seemed fast enough, but when running for a long time had this horrible memory leak issue. </p> <p>Now I was just assigned the blit to this reference, rather than creating a new object and ArrayList each time. It was much more efficient and didn't suffer from the same memory issue.</p> <p>For example something like this (run thousands of times in a loop):</p> <pre><code>tempImage = imageArrayList.get(i); // just assigns a reference, does not create a new object </code></pre> <p>instead of something like this:</p> <pre><code>tempImage = loadImage("image.jpg"); // this creates a new object every time it is called </code></pre>
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    1. POmt4j and Processing library : clean image resources
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    1. USJAMESSTONEco
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    1. COI was thinking of creating an image manager, and assign an ID to every images I could need, so I would be sure that theses images are not loaded multiple times. I think it's quite close to your solution, isn't it ?
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      1. USJérémy Dutheil
    2. COI just wrote an edit with my class, can you have a look at it please ?
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      1. USJérémy Dutheil
    3. COLooks like you resolved your issue. The code above looks good to me. The problem I ran into had to do with instantiating objects into ArrayLists and losing the reference to the previous object(s).
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