Applet绘制四个不同颜色的环

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import java.awt.*;import java.applet.*;public class CircleAppletTwo extends Applet {        public void paint(Graphics g){                this.setSize(980,350);                final int x=15;                final int range=20;                final int size=280;                final int scale=220;                g.setColor(Color.red);                for(int i=0;i<=range;i++){                        g.setColor(Color.red);                        g.drawOval(x-i/2, x-i/2, size+i, size+i);                }                for(int i=0;i<=range;i++){                        g.setColor(Color.blue);                        g.drawOval(scale+x-i/2, x-i/2, size+i, size+i);                }                for(int i=0;i<=range;i++){                        g.setColor(Color.green);                        g.drawOval(scale*2+x-i/2, x-i/2, size+i, size+i);                }                for(int i=0;i<=range;i++){                        g.setColor(Color.yellow);                        g.drawOval(scale*3+x-i/2, x-i/2, size+i, size+i);                }               g.setColor(Color.black);               g.setFont(new Font("楷体",Font.BOLD,20));               g.drawString("图：颜色不同的四个环",400,330);        }}