java实现计算器，import java.awt.*

import java.awt.event.*

import javax.swing.*

public class JiSuanQi

{

　　Frame f

　　Label lab

　　Button[] bt=new Button[29]

　　JTextField t

　　StringBuffer str //显示屏所显示的字符串

double x,y //x和y都是运算数

int z //Z表示单击了那一个运算符.0表示"+",1表示"-",2表示"*",3表示"/"

static double m //记忆的数字

　　JiSuanQi()

　　{-java implementation calculator, import java.awt.*　import java.awt.event.*　import javax.swing.*　public class JiSuanQi {Frame f　Label lab　Button [] bt = new Button [29]　JTextField t　StringBuffer str　//display character string displayed double x, y　//x and y are the operands int z　//Z represents an operator clicks that 0 means " +" , 1 indicates " -" , 2 is " *" , 3 is " /"　static double m　//number in memory JiSuanQi () {