请告诉给我做一个JAVA的计算器要和电脑上那个基本一样的

package jisuanqi;
import java.awt.*;
import java.awt.MenuBar;
import javax.swing.*;
import java.awt.event.*;
//主类
class jsq

extends Frame {
//声明
double op, pa1, pa2, pa3;
String op1, op2, ll, s;
boolean isResult = false;
//设置标题
Frame p=new Frame("计算器");
//创建按钮
Panel p0 = new Panel();
Panel p1 = new Panel();
Panel p2 = new Panel();
Panel p3 = new Panel();
Panel p4 = new Panel();
Panel p5 = new Panel();
Panel p6 = new Panel();
Panel p7 = new Panel();
// 创建文本框
JTextField t = new JTextField("0");
TextArea te = new TextArea();
//初始化按钮
Button b1 = new Button("Backspace");
Button b2 = new Button("CE");
Button b3 = new Button("sin");
Button b4 = new Button("MC");
Button b5 = new Button("7");
Button b6 = new Button("8");
Button b7 = new Button(