计算器设计java版的源代码.doc

这是用java编写的计算器的源代码,界面粗糙,在elipse中运行通过,就两个类:
第一个类frame ,代码如下
package jisuanqi;
import ;
import ;
import ;
import ;
import ;
import ;
import ;
import ;
public class frame {
static double aa=0;//寄存器
static int bb=0;//判断是否为连续输入运算符
static =0;
static char dd='d';//记录前一次运算符的值
public static void main(String args[]){
JFrame fm=new JFrame("计算器");
(220,180);
//(null);
(new Point(200,100));
();

Container container=();
GridBagLayout layout=new GridBagLayout();
(layout);
GridBagConstraints gg=new GridBagConstraints();
JTextField txt=new JTextField("0");
();
(false);
();
=0;
=0;
=;
=1;
=15;
(txt,gg);
=;
=1;
=2;
JButton btn7=new JButton("7");
Mylistener mylistener7 =new Mylistener((),txt);
(mylistener7);
(btn7,gg);
JButton btn8=new JButton("8");
Mylistener mylistener8 =new Myli