java计算机小程序百度网盘,如何编写JAVA计算器小程序

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import java.awt.*;

import java.awt.event.*;

import javax.swing.*;

public class Calculator implements ActionListener{

private double data1=0.0,data2=0.0;

private String t_content;

boolean number = false;

short key=-1;

short pkey=-1;

Frame frame=new Frame("Calculator");

TextField textfield=new TextField(30);

Button backspace=new Button("Backspace");

Button ce=new Button("CE");

Button c0=new Button("C");

Panel p1=new Panel();

Panel p2=new Panel();

String names[]={"7","8","9","/","sqrt","4","5","6","*","%","1","2","3","-","1/x","0","+/-",".","+","="};

Button bb[]=new Button[names.length];

public static void main(String[] args) {

// TODO Auto-generated method stub

Calculator cal=new Calculator();

cal.go();

}

public void go()

{

frame.setSize(300,200);

frame.setLayout(new BorderLayout());

Font fonts=new Font("楷体_GB2312",Font.PLAIN,12);

p1.setFont(fonts);

p1.setLayout(new GridLayout(2,1,5,10));

textfield.setFont(fonts);

p1.add(textfield,null);

backspace.addActionListener(this);

ce.addActionListener(this);

c0.addActionListener(this);

p1.add(backspace,null);

p1.add(ce,null);

p1.add(c0,null);

p2.setLayout(new GridLayout(4,5,5,5));

for(int i=0;i