Can't read image through ImageIO.read(file) after glfwCreateWindow()

[GriffinBabe]

Hello,

When I try to load a texture my program blocks at the ImageIO.read(file) method, placed in my Texture class constructor, the program blocks. There is no crash and no printStackTrace. It's like if I am locked in a while loop.

I tried to construct the texture in different places in my code, and it seems to not work only after I create a window with glfwCreateWindow(sizeX,sizeY,"name",0,0).
I'm on mac os Sierra, if that can help...

This clearly isn't a file access problem, if you wonder.

public Window(int sizeX, int sizeY,Game game) {
		this.game = game;
		this.frame = 0;
		
		if (!glfwInit()) {
			throw new IllegalStateException("GLFW failed to initialize.");
		}
		Texture texture1 = new Texture("brick.png"); //Here it works
		window = glfwCreateWindow(sizeX,sizeY,"Game3Graphics",0,0);
		
		if (window == 0) {
			throw new IllegalStateException("Failed to create window.");
		}

		glfwShowWindow(window);
		
		glfwMakeContextCurrent(window);
		
		GL.createCapabilities();
		
		glEnable(GL_TEXTURE_2D);
		
		Texture texture2 = new Texture("brick.png"); //Here it locks you in ImageIO.read()
	}

My texture class

public Texture(String fileName) {
		BufferedImage bi;
		
		try {
			bi = ImageIO.read(new File(fileName));

			width = bi.getWidth();
			height = bi.getHeight();
			
			int[] pixelsRaw = new int[width * height];
			
			pixelsRaw = bi.getRGB(0, 0, width, height, null, 0, width);
	
			ByteBuffer pixels = BufferUtils.createByteBuffer(width * height * 4);
	
			for (int i = 0; i < width; i++) {
				for (int j = 0; j < height; j++) {
					int pixel = pixelsRaw[i * width + j];
					pixels.put((byte) ((pixel >> 16) & 0xFF));// RED
					pixels.put((byte) ((pixel >> 8) & 0xFF));// GREEN
					pixels.put((byte) ((pixel) & 0xFF));// BLUE
					pixels.put((byte) ((pixel >> 24) & 0xFF));// ALPHA
				}
			}
			
			pixels.flip();

			tex_id = glGenTextures();
			
			//We put parameters.
			glBindTexture(GL_TEXTURE_2D,tex_id);
			glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
			glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);

			glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width,height, 0,GL_RGBA,GL_UNSIGNED_BYTE,pixels);
			
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

Thank you

[spasi]

ImageIO initializes AWT. The problem is that the GLFW and AWT event loops cannot run at the same time in the main/first thread on macOS. See this thread for more information. The simplest solution is to replace ImageIO with STBImage.