使用createBufferStrategy（）的正确方法是什么？

创建的方式

BufferStrategy

BufferStrategy

您使用它的方式令人怀疑。使用a的主要原因

BufferStrategy

但是，您似乎试图同时做这两个事情，这就是为什么它会引起您的问题。相反，您应该有一个“主”循环，该循环负责决定缓冲区应绘制的内容和时间，例如…

import java.awt.Canvas;import java.awt.Color;import java.awt.Dimension;import java.awt.EventQueue;import java.awt.Graphics2D;import java.awt.Rectangle;import java.awt.event.MouseAdapter;import java.awt.event.MouseEvent;import java.awt.image.BufferStrategy;import java.util.concurrent.atomic.AtomicBoolean;import java.util.logging.Level;import java.util.logging.Logger;import javax.swing.Jframe;import javax.swing.UIManager;import javax.swing.UnsupportedLookAndFeelException;public class Test {    public static void main(String[] args) {        new Test();    }    public Test() {        EventQueue.invokeLater(new Runnable() { @Override public void run() {     try {         UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());     } catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {         ex.printStackTrace();     }     TestPane testPane = new TestPane();     Jframe frame = new Jframe("Testing");     frame.setDefaultCloseOperation(Jframe.EXIT_ON_CLOSE);     frame.add(testPane);     frame.pack();     frame.setLocationRelativeTo(null);     frame.setVisible(true);     // The component needs to be attached to displayed window before     // the buffer can be created     testPane.startPainting(); }        });    }    public class TestPane extends Canvas {        private AtomicBoolean painting = new AtomicBoolean(true);        private PaintCycle paintCycle;        private Rectangle clickBounds;        public TestPane() { addMouseListener(new MouseAdapter() {     @Override     public void mouseClicked(MouseEvent e) {         if (clickBounds != null && clickBounds.contains(e.getPoint())) {  painting.set(false);         }     } });        }        public void startPainting() { if (paintCycle == null) {     createBufferStrategy(2);     painting.set(true);     paintCycle = new PaintCycle();     Thread t = new Thread(paintCycle);     t.setDaemon(true);     t.start(); }        }        public void stopPainting() { if (paintCycle != null) {     painting.set(false); }        }        @Override        public Dimension getPreferredSize() { return new Dimension(200, 200);        }        public class PaintCycle implements Runnable { private BufferStrategy strategy; private int xDelta = 2; private int yDelta = 2; @Override public void run() {     System.out.println("Painting has started");     int x = (int) (Math.random() * (getWidth() - 40));     int y = (int) (Math.random() * (getHeight() - 40));     do {         xDelta = (int) (Math.random() * 8) - 4;     } while (xDelta == 0);     do {         yDelta = (int) (Math.random() * 8) - 4;     } while (yDelta == 0);     clickBounds = new Rectangle(x, y, 40, 40);     strategy = getBufferStrategy();     while (painting.get()) {         // Update the state of the model...         update();         // Paint the state of the model...         paint();         try {  // What ever calculations you want to use to maintain the framerate...  Thread.sleep(40);         } catch (InterruptedException ex) {         }     }     System.out.println("Painting has stopped"); } protected void update() {     int x = clickBounds.x + xDelta;     int y = clickBounds.y + yDelta;     if (x + 40 > getWidth()) {         x = getWidth() - 40;         xDelta *= -1;     } else if (x < 0) {         x = 0;         xDelta *= -1;     }     if (y + 40 > getHeight()) {         y = getHeight() - 40;         yDelta *= -1;     } else if (y < 0) {         y = 0;         yDelta *= -1;     }     clickBounds.setLocation(x, y); } protected void paint() {     // Render single frame     do {         // The following loop ensures that the contents of the drawing buffer         // are consistent in case the underlying surface was recreated         do {  // Get a new graphics context every time through the loop  // to make sure the strategy is validated  Graphics2D graphics = (Graphics2D) strategy.getDrawGraphics();  // Render to graphics  // ...  graphics.setColor(Color.BLUE);  graphics.fillRect(0, 0, getWidth(), getHeight());  graphics.setColor(Color.RED);  graphics.fill(clickBounds);  // Dispose the graphics  graphics.dispose();  // Repeat the rendering if the drawing buffer contents  // were restored         } while (strategy.contentsRestored());         // Display the buffer         strategy.show();         // Repeat the rendering if the drawing buffer was lost     } while (strategy.contentsLost()); }        }    }}

您还应该记住，Swing从大约1.4（或者可能是1.5）开始就一直使用DirectX或OpenGL管道。使用的主要原因

BufferStrategy