★★★★★计算器(java)源码火爆征集中★★★★★

Question

各位大哥大姐，给个面子，秀一下你们的计算器，
最好有个图片，呵呵～～
小弟想参考一下～～～
由于分数不多，请见谅～～

Answer 1

package mypackage;import java.awt.*;
import javax.swing.*;
import java.awt.event.*;public class JSQ
{
public static void main(String[] args)
{
JSQFrame frame=new JSQFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.show();
}
}class JSQFrame extends JFrame
{
public JSQFrame()
{
JPanel panel=new JPanel();
text1=new JTextField(35);
text1.setText("");
text1.setEditable(false);
panel.add(text1); JSQPanel jsqpanel=new JSQPanel(this);

Container contentPane=getContentPane();
contentPane.add(panel,BorderLayout.NORTH);
contentPane.add(jsqpanel); setSize(400,200);
setTitle("计算器");
setResizable(false);
}

JTextField text1;
}class JSQPanel extends JPanel implements ActionListener
{
public JSQPanel(JSQFrame frame)
{
this.frame=frame;
setLayout(new GridLayout(5,5,10,5)); buttonBackSpace=new JButton("BS");
buttonCE=new JButton("CE");
buttonC=new JButton("C"); add(buttonBackSpace);
add(new JLabel());
add(buttonCE);
add(new JLabel());
add(buttonC); for(int i=7;i<=9;i++)
add(button[i]=new JButton(""+i));
buttonCHU=new JButton("/");
buttonSQRT=new JButton("sqrt");
add(buttonCHU);
add(buttonSQRT); for(int i=4;i<=6;i++)
add(button[i]=new JButton(""+i));
buttonCHENG=new JButton("*");
buttonPERCENT=new JButton("%");
add(buttonCHENG);
add(buttonPERCENT); for(int i=1;i<=3;i++)
add(button[i]=new JButton(""+i));
buttonJIAN=new JButton("-");
buttonX=new JButton("1/x");
add(buttonJIAN);
add(buttonX); button[0]=new JButton("0");
buttonFU=new JButton("+/-");
buttonDIAN=new JButton(".");
buttonJIA=new JButton("+");
buttonDENG=new JButton("=");
add(button[0]);
add(buttonFU);
add(buttonDIAN);
add(buttonJIA);
add(buttonDENG); for(int i=0;i<=9;i++)
button[i].addActionListener(this);
buttonBackSpace.addActionListener(this);
buttonCE.addActionListener(this);
buttonC.addActionListener(this);
buttonCHU.addActionListener(this);
buttonSQRT.addActionListener(this);
buttonCHENG.addActionListener(this);
buttonPERCENT.addActionListener(this);
buttonJIAN.addActionListener(this);
buttonX.addActionListener(this);
buttonFU.addActionListener(this);
buttonDIAN.addActionListener(this);
buttonDENG.addActionListener(this);
buttonJIA.addActionListener(this);

String plaf="com.sun.java.swing.plaf.windows.WindowsLookAndFeel";
try
{
UIManager.setLookAndFeel(plaf);
SwingUtilities.updateComponentTreeUI(this);
}
catch(Exception e)
{
}

} public void actionPerformed(ActionEvent event)
{
for(int i=0;i<=9;i++)
if(event.getSource()==button[i])
{
frame.text1.setText(frame.text1.getText()+i);
} if(event.getSource()==buttonJIA)
{
if(!frame.text1.getText().equals(""))
{
DString="";
FUString="";
if(YSFString.equals("+"))
{
num1=num1+Double.parseDouble(frame.text1.getText());
frame.text1.setText("");
} if(YSFString.equals(""))
{
num1=Double.parseDouble(frame.text1.getText());
frame.text1.setText("");
YSFString="+";
}
}
} if(event.getSource()==buttonJIAN)
{
if(!frame.text1.getText().equals(""))
{
DString="";
FUString="";
if(YSFString.equals("-"))
{
num1=num1-Double.parseDouble(frame.text1.getText());
frame.text1.setText("");
} if(YSFString.equals(""))
{
num1=Double.parseDouble(frame.text1.getText());
frame.text1.setText("");
YSFString="-";
}
}
}
if(event.getSource()==buttonCHENG)
{
if(!frame.text1.getText().equals(""))
{
DString="";
FUString="";
if(YSFString.equals("*"))
{
num1=num1*Double.parseDouble(frame.text1.getText());
frame.text1.setText("");
} if(YSFString.equals(""))
{
num1=Double.parseDouble(frame.text1.getText());
frame.text1.setText("");
YSFString="*";
}
}
}
if(event.getSource()==buttonCHU)
{
if(!frame.text1.getText().equals(""))
{
DString="";
FUString="";
if(YSFString.equals("/"))
{
num1=num1/Double.parseDouble(frame.text1.getText());
frame.text1.setText("");
} if(YSFString.equals(""))
{
num1=Double.parseDouble(frame.text1.getText());
frame.text1.setText("");
YSFString="/";
}
}
}
if(event.getSource()==buttonDENG)
{
DString="";
FUString="";
num2=Double.parseDouble(frame.text1.getText()); if(YSFString.equals("+"))
result=num1+num2;
if(YSFString.equals("-"))
result=num1-num2;
if(YSFString.equals("*"))
result=num1*num2;
if(YSFString.equals("/"))
result=num1/num2; frame.text1.setText(""+result);
YSFString="";
}
if(event.getSource()==buttonC || event.getSource()==buttonCE)
frame.text1.setText("");
if(event.getSource()==buttonDIAN)
{ if(DString=="")
frame.text1.setText(frame.text1.getText()+".");
DString=".";
}
if(event.getSource()==buttonFU)
{
if(FUString=="")
frame.text1.setText(frame.text1.getText()+"-");
FUString="-";
}
if(event.getSource()==buttonSQRT)
{
double d=0;
if(!frame.text1.getText().equals(""))
d=Double.parseDouble(frame.text1.getText());
frame.text1.setText(""+Math.sqrt(d));
}
if(event.getSource()==buttonX)
{
double d=0;
if(!frame.text1.getText().equals(""))
{
d=Double.parseDouble(frame.text1.getText());
d=1/d;
frame.text1.setText(""+d);
}
}
if(event.getSource()==buttonPERCENT)
if(!frame.text1.getText().equals(""))
{
double d=0;
d=Double.parseDouble(frame.text1.getText())*100;
frame.text1.setText(""+d);
}
if(event.getSource()==buttonBackSpace)
if(!frame.text1.getText().equals(""))
{
int length=0;
String string="";
length=(frame.text1.getText()).length();
System.out.println(length);
string=frame.text1.getText();
String str=string.substring(0,length-1);

frame.text1.setText(str);
}





} JButton button[]={null,null,null,null,null,null,null,null,null,null};
JButton buttonBackSpace,buttonCE,buttonC,buttonCHU,buttonSQRT,buttonCHENG,
buttonPERCENT,buttonJIAN,buttonX,buttonFU,buttonDIAN,buttonDENG,buttonJIA;
JSQFrame frame;
double num1=0,num2=0,result=0;
String YSFString="",DString="",FUString="";
}前些天老师布置的作业！呵呵！