用JAVA写数字时钟答:import java.awt.event.ActionEvent;import java.awt.*;import java.util.Calendar;import java.util.GregorianCalendar;class Clock extends JFrame implements ActionListener{ int x,y,x0,y0,r,h,olds_x,olds_y,oldm_x,oldm_y,oldh_x,oldh_y,ss,mm,hh,old_m,old_h,ang;final double RAD...