import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.util.Arrays;
public class Calculator_ implements ActionListener
{
//定义控件
private JButton a1,a2,a3,a4,a5,a6,a7,a8,a9,a0,a00;
private JButton b,b1,b2,b3,b4,b5,sin,cos,sqrt,sqr,cube,b03,b04,b05,c;
private JButton ex;
private JButton d,d1;
private Label l1,l2;
private JFrame fr;
private JPanel pa1,pa2,pa3;
String s,s1,s2,x,x1;
Double[] k;
//Frame窗体设置
Calculator_(){
s=new String();s1=new String();s2=new String();
.........
