我得到这个错误。

线程“主”中的异常java.lang.Error：未解决的编译问题：rgb2无法解析为变量

它总是导致错误的rgb2数组。 如何解决这个问题呢？

BufferedImage img1 = ImageIO.read(file1);

BufferedImage img2 = ImageIO.read(file2);

int w = img1.getWidth();

int h = img1.getHeight();

long diff = 0;

for (int y = 0; y < h; y++) {

for (int x = 0; x < w; x++) {

int rgb1[] = img1.getRGB(x, y, w, h, rgb1, 0, w);

int rgb2[]= img2.getRGB(x, y, w, h, rgb2, 0, w);

int index = y * w + x;

int r1 = (rgb1[index] >> 16) & 0xff;

int g1 = (rgb1[index] >> 8) & 0xff;

int b1 = (rgb1[index] ) & 0xff;

int r2 = (rgb2[index] >> 16) & 0xff;

int g2 = (rgb2[index]>> 8) & 0xff;

int b2 = (rgb2[index] ) & 0xff;

r2 += Math.abs(r2 - r1);

g2 += Math.abs(g2 - g1);

b2 += Math.abs(b2 - b1);

rgb2[index] = (((r2 & 0xff) << 16) + ((g2 & 0xff) << 8) +(b2 & 0xff));

rgb2[index] = (rgb2[index]*17);

}

}

int i = 0;

for (int y = 0; y < h; y++) {

int red = (y * 255) / (h - 1);

for (int x = 0; x < w; x++) {

int green = (x * 255) / (w - 1);

int blue = 128;

rgb2[i++] = (red << 16) | (green << 8) | blue;//the problem is at this line

}

}

BufferedImage image = new BufferedImage(w, h, BufferedImage.TYPE_INT_RGB);

image.setRGB(0, 0, w, h, rgb2, 0, w);

Graphics g = image.createGraphics();

g.drawImage(image, 0, 0, null);

g.dispose();

File imageFile = new File("saved.jpeg");

ImageIO.write(image, "jpg", imageFile);

}

在循环外声明后，出现此错误。 线程“主”中的异常java.lang.Error：未解决的编译问题：本地变量rgb1可能尚未初始化

int w = img1.getWidth();

int h = img1.getHeight();

int scale = w * h * 3;

int rgb1[] = img1.getRGB(0, 0, w, h, rgb1, 0, w);

int rgb2[] = img2.getRGB(0, 0, w, h, rgb2, 0, w);