如果您使用plain Graphics，则强制转换为Graphics2Dfirst：
Graphics2D g2d = (Graphics2D)g;
旋转整个Graphics2D：
g2d.rotate(Math.toradians(degrees));
//draw shape/image (will be rotated)
要重置旋转（因此您只旋转一件事）：
AffineTransform old = g2d.getTransform();
g2d.rotate(Math.toradians(degrees));
//draw shape/image (will be rotated)
g2d.setTransform(old);
//things you draw after here will not be rotated
例：
class MyPanel extends JPanel {
@Override
public void paintComponent(Graphics g) {
super.paintComponent(g);
Graphics2D g2d = (Graphics2D)g;
AffineTransform old = g2d.getTransform();
g2d.rotate(Math.toradians(degrees));
//draw shape/image (will be rotated)
g2d.setTransform(old);
//things you draw after here will not be rotated
}
}
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