小型的计算器源代码
import java.awt.*;
import java.awt.event.*;
import javax.swing.JTextField;
@SuppressWarnings("serial")
public class testCalculator extends Frame {
GridLayout g1;
Button b0,b1,b2,b3,b4,b5,b6,b7,b8,b9,b10,b11,b12,b13,b14,b15;
Panel p1,p2;
Double x,y;
JTextField tf1 = new JTextField(27);
StringBuffer str =new StringBuffer();
int i;
