有谁知道那里有java编的计算器小程序的源代码下载？

Question

http://bbs.sohu.com/pop_elite.php3?article_id=2152636&pagenum=1

Answer 1

http://bbs.sohu.com/pop_listelite.php3?bbs_id=5507

Answer 2

你还可以看另外一个帖子！
//这是我帮一个网友修改之后的代码！
//file name:  JSQ2.javaimport java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class JSQ2 extends JFrame implements ActionListener
{
private String  name[] =
{"0","1", "2","+","3","4","5","-","6","7","8","*","9",".","=","/"};
private String  extend[] =
{"x^2","ln","back","sin","cos","tan","√￣","off","cls"};
String s="";
int flag=0;
    double x;
final double pi = 3.14159265358979323846;
private JButton button[] = new JButton[name.length];
private JButton button1[] = new JButton[extend.length];
JLabel dis_show = new JLabel("结果:");
JTextField window = new JTextField(12);
public JSQ2()
{
super("woodfire小小计算机");
setSize(200,290);
Container c = getContentPane();
c.setLayout(new GridLayout(2,1,0,0));
JPanel result = new JPanel();
result.add(dis_show);
result.add(window);
for(int i= 0;i<extend.length;i++)
{
button1[i] = new JButton(extend[i]);
            result.add(button1[i]);
}
JPanel border = new JPanel();
for(int i= 0;i<name.length;i++)
{
button[i] = new JButton(name[i]);
            border.add(button[i]);
}
c.add(result);
c.add(border);
for(int i= 0;i<name.length;i++)
{
           button[i].addActionListener(this);
}
for(int i= 0;i<extend.length;i++)
{
          button1[i].addActionListener(this);
}
show();
}
public void actionPerformed(ActionEvent e)
{
 if (e.getSource()==button[3])
    {
 x=Double.parseDouble(s);     flag=1;
    window.setText("");
    s="";
}
else if (e.getSource()==button[7])
{
  x=Double.parseDouble(s);
          flag=2;
      window.setText("");
      s="";
}
else if (e.getSource()==button[11])
{
  x=Double.parseDouble(s);
                  flag=3;
          window.setText("");
          s="";
}
else if (e.getSource()==button[15])
{
  x=Double.parseDouble(s);
      flag=4;
      window.setText("");
      s="";
}
else if (e.getSource()==button[14])
{
  switch(flag)
      {
    case 1:
        {
 x=x+Double.parseDouble(s);
 String s=String.valueOf(x);
     window.setText(s);
     break;
     }
       case 2:
        {
     x=x-Double.parseDouble(s);
     String s=String.valueOf(x);
     window.setText(s);
     break;
     }
      case 3:
        {
     x=x*Double.parseDouble(s);
     String s=Double.toString(x);
     window.setText(s);
     break;
   }
      case 4:
        {
      if(Double.parseDouble(s)==0)
        {
  window.setText("除数不能为0");
  break;
}
        x=x/Double.parseDouble(s);
        String s=String.valueOf(x);
        window.setText(s);
        break;
    }
  }
}
else if(e.getSource()==button1[2])
{
          StringBuffer str = new StringBuffer(window.getText());
  int n=str.length();
  int m=n-1;
  s = String.valueOf(str.delete(m,n));
  window.setText(s);
}
else if(e.getSource()==button1[8])
{
          window.setText("");
      s="";
      flag=0;
}
else if(e.getSource()==button1[0])
{
             x=Double.parseDouble(s);
 x=x*x;
      String s=String.valueOf(x);
        window.setText(s);
}
else if(e.getSource()==button1[1])
{
             x=Math.log(Double.parseDouble(s));
        String s=String.valueOf(x);
        window.setText(s);
}
else if(e.getSource()==button1[3])
{
             x=Math.sin(Double.parseDouble(s)*pi/180);
        String s=String.valueOf(x);
        window.setText(s);
}
else if(e.getSource()==button1[6])
{
             x=Math.sqrt(Double.parseDouble(s));
        String s=String.valueOf(x);
        window.setText(s);
}
else if(e.getSource()==button1[4])
{
             x=Math.cos(Double.parseDouble(s)*pi/180);
        String s=String.valueOf(x);
        window.setText(s);
}
else if(e.getSource()==button1[5])
{
             x=Math.tan(Double.parseDouble(s)*pi/180);
        String s=String.valueOf(x);
        window.setText(s);
}
else if(e.getSource()==button1[7])
{
            System.exit(0);
}
      else
         {
           s=s+e.getActionCommand();
           window.setText(s);
  }
}
public static void main(String[] args)
{
JSQ2 bun = new JSQ2();
bun.addWindowListener(new WindowAdapter()
{
public void windowListener(WindowEvent e)
{
System.exit(0);
}
});
}
}