速度求JAVA编写的计算器代码

你自己看一下吧?应该可以看的懂的.
import java.awt.*;
import java.awt.event.*;
import java.util.Date;
public class CalcV1_0 implements ActionListener {
MenuBar mb;
Menu help;
MenuItem help_1,help_2;
Frame win=new Frame("CalcV1_0");
Label label=new Label();
Date date=new Date();
Panel num=new Panel();
Panel meth=new Panel();
TextArea display=new TextArea();
Button add1,sub,mul,div;
Button hex,ox;
int no1,no2,no4;
float no3;
String ch,ch3;
Button res=new Button("=");
Button canc=new Button("CE");
Button but7=new Button("7");
Button but8=new Button("8");
Button but9=new Button("9");
Button but4=new Button("4");
Button but5=new Button("5");
Button but6=new Button("6");
Button but1=new Button("1");
Button but2=new Button("2");