java - 处理中:内存不足错误

我正在使用Processing。这是我的全部草图：

import guicomponents.*;

PImage backgroundImage;

void setup() {
  size(911, 715);
  backgroundImage = loadImage("Floorplan.png");
}
void draw() {
  background(backgroundImage);
  GImageButton[] buttons = {
    new GImageButton(this, null, "wm.png", 1, 10, 10),
    new GImageButton(this, null, "wm.png", 1, 10, 10),
    new GImageButton(this, null, "wm.png", 1, 10, 10),
    new GImageButton(this, null, "wm.png", 1, 10, 10),
    new GImageButton(this, null, "wm.png", 1, 10, 10),
    new GImageButton(this, null, "wm.png", 1, 10, 10),
    new GImageButton(this, null, "wm.png", 1, 10, 10),
    new GImageButton(this, null, "wm.png", 1, 10, 10),
    new GImageButton(this, null, "wm.png", 1, 10, 10),
    new GImageButton(this, null, "wm.png", 1, 10, 10),
    new GImageButton(this, null, "wm.png", 1, 10, 10),
    new GImageButton(this, null, "wm.png", 1, 10, 10),
    new GImageButton(this, null, "wm.png", 1, 10, 10)
  };
}

（这只是一个演示我所遇到的问题的演示。）如果运行了足够长时间，将生成一个OutOfMemoryError：

An OutOfMemoryError means that your code is either using up too much memory
because of a bug (e.g. creating an array that's too large, or unintentionally
loading thousands of images), or that your sketch may need more memory to run.
If your sketch uses a lot of memory (for instance if it loads a lot of data files)
you can increase the memory available to your sketch using the Preferences window.
Exception in thread "Image Fetcher 2" java.lang.OutOfMemoryError: Java heap space
An OutOfMemoryError means that your code is either using up too much memory
because of a bug (e.g. creating an array that's too large, or unintentionally
loading thousands of images), or that your sketch may need more memory to run.
If your sketch uses a lot of memory (for instance if it loads a lot of data files)
you can increase the memory available to your sketch using the Preferences window.
    at java.awt.image.DataBufferInt.<init>(DataBufferInt.java:41)
    at java.awt.image.Raster.createPackedRaster(Raster.java:458)
    at java.awt.image.DirectColorModel.createCompatibleWritableRaster(DirectColorModel.java:1015)
    at sun.awt.image.ImageRepresentation.createBufferedImage(ImageRepresentation.java:230)
    at sun.awt.image.ImageRepresentation.setPixels(ImageRepresentation.java:528)
    at sun.awt.image.ImageDecoder.setPixels(ImageDecoder.java:120)
    at sun.awt.image.PNGImageDecoder.sendPixels(PNGImageDecoder.java:531)
    at sun.awt.image.PNGImageDecoder.produceImage(PNGImageDecoder.java:452)
    at sun.awt.image.InputStreamImageSource.doFetch(InputStreamImageSource.java:246)
    at sun.awt.image.ImageFetcher.fetchloop(ImageFetcher.java:172)
    at sun.awt.image.ImageFetcher.run(ImageFetcher.java:136)
Exception in thread "Animation Thread" java.lang.OutOfMemoryError: Java heap space
    at processing.core.PImage.<init>(Unknown Source)
    at processing.core.PApplet.loadImageMT(Unknown Source)
    at processing.core.PApplet.loadImage(Unknown Source)
    at processing.core.PApplet.loadImage(Unknown Source)
    at guicomponents.GImageButton.getImages(GImageButton.java:136)
    at guicomponents.GImageButton.<init>(GImageButton.java:100)
    at gimage_demo.draw(gimage_demo.java:35)
    at processing.core.PApplet.handleDraw(Unknown Source)
    at processing.core.PApplet.run(Unknown Source)
    at java.lang.Thread.run(Thread.java:619)

为什么会这样呢？当数组在draw()的末尾超出范围时，内存不会被垃圾回收吗？

尝试使按钮抽动时遇到了这个问题。我找不到改变其位置的方法，所以我只是在想要的新位置创建了一个新的位置。有一个更好的方法吗？

最佳答案

为什么会这样呢？当数组在draw（）末尾超出作用域时，内存不会被垃圾回收吗？


唯一可以保证的是buttons数组超出范围时可以进行垃圾回收。对于GImageButton对象及其成员，取决于GImageButton构造函数的副作用。

确保构造函数不会在第一个参数（在您的情况下为this）上“注册”自身，并且没有进行缓存，或者确保GImageButton不会泄漏来自内部的this引用。构造函数等