import?java.awt.*;
import?java.awt.event.*;
import?javax.swing.*;
import?javax.swing.event.*;
import?javax.swing.border.*;
import?java.util.*;
import?java.text.DecimalFormat;?

class?Mypanel?extends?Panel?implements?ActionListener?
{??
???Label?a;
???Button?button1button2button3button4button5;???
???Color?backColor;?
???Processor?processor;
???About?about;
???sys?abc;
???dail?aa;
???Mypanel（）??
???{??
??????setLayout（new?GridLayout（81））;
??????a=new?Label（““）;
??????button1=new?Button（“??數據錄入??“）;
??????button2=new?Button（“??交通分布??“）;
??????button3=new?Button（“??交通分配??“）;
??????button4=new?Button（“??打印??“）;
??????button5=new?Button（“??關于??“）;
??????add（a）;
??????add（button1）;
??????add（button2）;
??????add（button3）;
??????add（button4）;
??????add（button5）;