A synthesis of the answers to this post, the answers to Consty’s, and my own research: What works: Use GraphicsConfiguration.createCompatibleImage to create images compatible with what you’re drawing on. This is absolutely essential! Use double-buffered drawing via Canvas.createBufferStrategy. Use -Dsun.java2d.opengl=True where available to speed up drawing. Avoid using transforms for scaling. Instead, cache scaled versions … Read more
According to the discussion here, it is always safe to cast from Graphics to Graphics2D. However I am not able to quickly find the official Sun statement on this. The reason it is valid to cast from Graphics to Graphics2D, is because Sun have said that all Graphics objects returned by the API in Java … Read more
I think I found a solution by researching and putting bits and pieces together from too many Google searches. Here it is, comments and all: private BufferedImage toCompatibleImage(BufferedImage image) { // obtain the current system graphical settings GraphicsConfiguration gfxConfig = GraphicsEnvironment. getLocalGraphicsEnvironment().getDefaultScreenDevice(). getDefaultConfiguration(); /* * if image is already compatible and optimized for current system … Read more
You said that the normal openJDK works the way you want him to work, correct? If true, Why don’t you change the JDK IntelliJ use? I believe it is platform SDK in preferences.
You should use setStroke to set a stroke of the Graphics2D object. The example at http://www.java2s.com gives you some code examples. The following code produces the image below: import java.awt.*; import java.awt.geom.Line2D; import javax.swing.*; public class FrameTest { public static void main(String[] args) { JFrame jf = new JFrame(“Demo”); Container cp = jf.getContentPane(); cp.add(new JComponent() … Read more