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下面Applet程序的功能是统计在平面坐标系第一象限中，半径大于9，小于10的圆环中坐标值为整数的点有多少并且给出其坐标值。请改正程序中的错误(有下画线的语句)，使程序执行后，能得到预期的结果。 import java.awt.； import java.applet.； /* ＜applet code=Di9Ti width=200 height=100＞＜/applet＞ / public class Di9Ti extends Applet { public void paint(Graphics g) { int x,y,r1=5,r2=4； int count=0； for(x=1；x＜y；x++) { for(y=1；y＜r1；y) { if(xx+yy＜=r2r2||xx+yy＞=r1r1) break； g.drawStdng("x="+x+"y="+y，20+count80,20)； count++； } } g.drawString("count="+count,20,40)； } } ex11_3.html：＜html＞＜head＞＜title＞A Simple Program＜/title＞＜/head＞＜body＞＜applet code="Di9Ti.class"width=800 height=400＞＜/applet＞＜／body＞＜／html＞

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