关于用java程序编写一个简单的计算器答:import java.awt.*;import java.awt.event.*;import java.util.EventObject;public class CalculatorGUI{ private Frame f;private Panel p1,p2;private Button b0,b1,b2,b3,b4,b5,b6,b7,b8,b9;private Button bPoint,bAdd,bDec,bMul,bDiv,bCal;private TextField tf;private String s,op;priv...