java课设——计算器

分别用Java和html+js写了两个计算器，虽然都有bug，先记录一下，怕丢了

JAVA

单行文本框（JTextField）+数字键输入（1、2、3、4、5、6、7、8、9、0、PI）+功能键运算（+、-、*、/、1/X、sin、cos……）

导入包

import java.awt.*;
import java.awt.event.*;
import java.math.*;
import javax.swing.*;
import java.awt.Color;
import bsh.Interpreter; 

整体布局

JFrame jf = new JFrame("徐天宇的哲学计算器");//对话框标题
Container pane=jf.getContentPane();//容器
pane.setLayout(new GridLayout(2,1));//网格总体布局二行一列
JPanel j1=new JPanel();//容器j1
j1.setLayout(new FlowLayout());
JPanel j2=new JPanel();
j2.setLayout(new GridLayout(4,8));//界面4*8按钮
final JTextField text = new JTextField(50);//文本域
text.setFont(new Font("楷体", Font.PLAIN, 30) );//文本域字体大小

将容器j1、j2加到容器pane

pane.add(j1);
pane.add(j2);

将文本框加到容器j1中

j1.add(text);//将文本域加到j1容器中

容器j2的按键

JButton button1 = new JButton("1");//添加按钮
		JButton button2 = new JButton("2");
		JButton button3 = new JButton("3");
		JButton button4 = new JButton("4");
		JButton button5 = new JButton("5");
		JButton button6 = new JButton("6");
		JButton button7 = new JButton("7");
		JButton button8 = new JButton("8");
		JButton button9 = new JButton("9");
		JButton button0 = new JButton("0");
		JButton buttonadd = new JButton("+");
		JButton buttonc = new JButton("C");
		JButton buttonsubtract = new JButton("-");
		JButton buttonmul = new JButton("×");
		JButton buttondelete = new JButton("delete");
		JButton buttondivide = new JButton("÷");
		JButton buttonequal = new JButton("=");
		JButton buttonnegation = new JButton("+/-");
		JButton buttonbackwards = new JButton("1/x");
		JButton buttondecimal = new JButton(".");
		JButton buttonsin = new JButton("sin(X)");
		JButton buttoncos = new JButton("cos(X)");
		JButton buttontan = new JButton("tan(X)");
		JButton buttoncsc = new JButton("csc(X)");
		JButton buttonsec = new JButton("sec(X)");
		JButton buttoncot = new JButton("cot(X)");
		JButton buttonpi = new JButton("π");	
		JButton buttonsqrt = new JButton("√X");
		JButton buttonpingfang = new JButton("X²");
		JButton buttonlifang = new JButton("X³");
		JButton buttonlifanggen = new JButton("³√X");
		JButton buttonnuaa = new JButton("nuaa.work");

将各个按键加入到容器j2中

j2.add(button1);
j2.add(button2);
j2.add(button3);
j2.add(buttonadd);
j2.add(buttonc);
j2.add(buttonsqrt);
j2.add(buttonsin);
j2.add(buttoncsc);
j2.add(button4);
j2.add(button5);
j2.add(button6);
j2.add(buttonsubtract);
j2.add(buttondelete);
j2.add(buttonpingfang);
j2.add(buttoncos);
j2.add(buttonsec);
j2.add(button7);
j2.add(button8);
j2.add(button9);
j2.add(buttonmul);
j2.add(buttonbackwards);
j2.add(buttonlifang);
j2.add(buttontan);
j2.add(buttoncot);
j2.add(buttonnegation);
j2.add(button0);
j2.add(buttondecimal);
j2.add(buttondivide);
j2.add(buttonpi);
j2.add(buttonlifanggen);
j2.add(buttonequal);
j2.add(buttonnuaa); 

设置文本框和按键的前、后景色

text.setBackground(Color.yellow);//设置按钮前景和背景色
button1.setForeground(Color.orange);
button1.setBackground(Color.gray);
button2.setForeground(Color.orange);
button2.setBackground(Color.gray);
button3.setForeground(Color.orange);
button3.setBackground(Color.gray);
button4.setForeground(Color.orange);
button4.setBackground(Color.gray);
button5.setForeground(Color.orange);
button5.setBackground(Color.gray);
button6.setForeground(Color.orange);
button6.setBackground(Color.gray);
button7.setForeground(Color.orange);
button7.setBackground(Color.gray);
button8.setForeground(Color.orange);
button8.setBackground(Color.gray);
button9.setForeground(Color.orange);
button9.setBackground(Color.gray);
button0.setForeground(Color.orange);
button0.setBackground(Color.gray);
buttonnegation.setForeground(Color.CYAN);
buttonnegation.setBackground(Color.DARK_GRAY);
buttondecimal.setForeground(Color.CYAN);
buttondecimal.setBackground(Color.DARK_GRAY);
buttonpi.setForeground(Color.black);
buttonpi.setBackground(Color.gray);
buttonadd.setForeground(Color.red);
buttonadd.setBackground(Color.gray);
buttonsubtract.setForeground(Color.red);
buttonsubtract.setBackground(Color.gray);
buttonmul.setForeground(Color.red);
buttonmul.setBackground(Color.gray);
buttondivide.setForeground(Color.red);
buttondivide.setBackground(Color.gray);
buttonc.setForeground(Color.blue);
buttonc.setBackground(Color.gray);
buttondelete.setForeground(Color.blue);
buttondelete.setBackground(Color.gray);
buttonbackwards.setForeground(Color.blue);
buttonbackwards.setBackground(Color.gray);
buttonpi.setForeground(Color.orange);
buttonpi.setBackground(Color.gray);
buttonsin.setForeground(Color.green);
buttonsin.setBackground(Color.gray);
buttoncos.setForeground(Color.green);
buttoncos.setBackground(Color.gray);
buttontan.setForeground(Color.green);
buttontan.setBackground(Color.gray);
buttoncsc.setForeground(Color.magenta);
buttoncsc.setBackground(Color.gray);
buttonsec.setForeground(Color.magenta);
buttonsec.setBackground(Color.gray);
buttoncot.setForeground(Color.magenta);
buttoncot.setBackground(Color.gray);
buttonnuaa.setForeground(Color.white);
buttonnuaa.setBackground(Color.gray);
buttonsqrt.setForeground(Color.pink);
buttonsqrt.setBackground(Color.gray);
buttonpingfang.setForeground(Color.pink);
buttonpingfang.setBackground(Color.gray);
buttonlifang.setForeground(Color.pink);
buttonlifang.setBackground(Color.gray);
buttonlifanggen.setForeground(Color.pink);
buttonlifanggen.setBackground(Color.gray);
buttonequal.setForeground(Color.red);
buttonequal.setBackground(Color.black);

按下数字按钮输入

button1.addActionListener(new ActionListener()//数字键输入
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+"1");
}
});
button2.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+"2");
}
});
button3.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+"3");
}
});
button4.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+"4");
}
});
button5.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+"5");
}
});
button6.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+"6");
}
});
button7.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+"7");
}
});
button8.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+"8");
}
});
button9.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+"9");
}
});
button0.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+"0");
}
});
buttonpi.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+"3.141592653589793238462643383279");
}
});
buttondecimal.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+".");
}
});

退位和清零

buttondelete.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText().substring(0,text.getText().length()-1));
}
});
/**/
buttonc.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText("0");

}
});

功能键进行运算

buttonadd.addActionListener(new ActionListener()//功能键输入
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+"+");
}
});
buttonequal.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
try
{
Interpreter a = new Interpreter();
Object obj = a.eval(text.getText());
text.setText(obj+"");
}catch(Exception e2)
{
e2.printStackTrace();
}

}
});
buttonsubtract.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+"-");
}
});
buttonmul.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{

text.setText(text.getText()+"*");
}
});
buttondivide.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{

text.setText(text.getText()+"/");
}
});
buttonbackwards.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
double s;
s = Double.parseDouble(text.getText());
text.setText(1/s+"");
}
});
buttonnegation.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
double s;
s = Double.parseDouble(text.getText());
text.setText(-s+"");
}
});

buttonsqrt.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
double s;
s = Double.parseDouble(text.getText());
text.setText(Math.sqrt(s)+"");
}
});
buttonpingfang.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
double s;
s = Double.parseDouble(text.getText());
text.setText(s*s+"");
}
});
buttonlifang.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
double s;
s = Double.parseDouble(text.getText());
text.setText(s*s*s+"");
}
});
buttonlifanggen.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
double s;
s = Double.parseDouble(text.getText());
text.setText(Math.pow(s, 1.0/3.0)+"");
}
});
buttonsin.addActionListener(new ActionListener()//求正弦值
{
public void actionPerformed(ActionEvent e)
{
double s;
s = Double.parseDouble(text.getText());
text.setText(Math.sin(Math.PI*s/180)+"");
}
});
buttoncos.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
double s;
s = Double.parseDouble(text.getText());
text.setText(Math.cos(Math.PI*s/180)+"");
}
});
buttontan.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
double s;
s = Double.parseDouble(text.getText());
text.setText(Math.tan(Math.PI*s/180)+"");
}
});
buttoncsc.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
double s;
s = Double.parseDouble(text.getText());
text.setText(1/(Math.sin(Math.PI*s/180))+"");
}
});
buttoncot.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
double s;
s = Double.parseDouble(text.getText());
text.setText(1/(Math.tan(Math.PI*s/180))+"");
}
});
buttonsec.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
double s;
s = Double.parseDouble(text.getText());
text.setText(1/(Math.cos(Math.PI*s/180))+"");
}
});
buttonnuaa.addActionListener(new ActionListener()
{
public void actionPerformed(final ActionEvent arg0) {
try {
Runtime.getRuntime().exec("cmd /c start http://nuaa.work");
} catch (Exception ex) {
System.out.println("error");
ex.printStackTrace();
}
}
});

设置窗口位置

jf.setSize(800,300);
jf.setVisible(true);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

JS计算器

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>JS计算器</title>
<style>
.position-child{
position:absolute;
top:50%;
left:50%;
transform:translate(-50%,-50%);
}
.footer{
clear: both;
display: block;
text-align: center;
margin: 0px auto;
position: absolute;
bottom: 100px;
width: 100%;
}
</style>
<meta name="viewport"content="width=device-width, initial-scale=1.0, minimum-scale=0.5, maximum-scale=2.0, user-scalable=yes"/>
<link rel="stylesheet" type="text/css" href="untitled.css">
</head>
<body>

<div class="position-child">
<center>
<div class="box">
<form action="" class="form1" name="form1">
<div class="header">
<center><input style=" width:220px;" type="text" id="text" name="text" class="text"/></center>
</div>
<table class="table">
<tr>
<td> <input id="CE" style="height:55px; width:120px;" type="button" value="CE" onClick="jisuan(this.id)"/></td>
<td> <input id="Backspace" style="height:55px; width:120px;" type="button" value="Backspace" onClick="jisuan(this.id)"/></td>
</tr>
</table>
<table class="table">
<tr>
<td>  <input id="1" style="height:55px; width:55px;" type="button" value="1" onClick="jisuan(this.id)"/> </td>
<td>  <input id="2" style="height:55px; width:55px;" type="button" value="2" onClick="jisuan(this.id)"/> </td>
<td>  <input id="3" style="height:55px; width:55px;" type="button" value="3" onClick="jisuan(this.id)"/> </td>
<td>  <input id="+" style="height:55px; width:55px;" type="button" value="+" onClick="jisuan(this.id)"/> </td>
</tr>
<tr>
<td>  <input id="4" style="height:55px; width:55px;" type="button" value="4" onClick="jisuan(this.id)"/> </td>
<td>  <input id="5" style="height:55px; width:55px;" type="button" value="5" onClick="jisuan(this.id)"/> </td>
<td>  <input id="6" style="height:55px; width:55px;" type="button" value="6" onClick="jisuan(this.id)"/> </td>
<td>  <input id="-" style="height:55px; width:55px;" type="button" value="-" onClick="jisuan(this.id)"/> </td>
</tr>
<tr>
<td>  <input id="7" style="height:55px; width:55px;" type="button" value="7" onClick="jisuan(this.id)"/> </td>
<td>  <input id="8" style="height:55px; width:55px;" type="button" value="8" onClick="jisuan(this.id)"/> </td>
<td>  <input id="9" style="height:55px; width:55px;" type="button" value="9" onClick="jisuan(this.id)"/> </td>
<td>  <input id="*" style="height:55px; width:55px;" type="button" value="*" onClick="jisuan(this.id)"/> </td>
</tr>
<tr>
<td>  <input id="/" style="height:55px; width:55px;" type="button" value="/" onClick="jisuan(this.id)"/> </td>
<td>  <input id="0" style="height:55px; width:55px;" type="button" value="0" onClick="jisuan(this.id)"/> </td>
<td>  <input id="." style="height:55px; width:55px;" type="button" value="." onClick="jisuan(this.id)"/></td>
<td>  <input id="=" style="height:55px; width:55px;" type="button" value="=" onClick="jisuan(this.id)"/> </td>
</tr>
</table>

</form>
</div>
</center>
<script type="text/javascript" src="https://cdn.bootcss.com/canvas-nest.js/1.0.1/canvas-nest.min.js"></script>
</div>
</body>
<script type="text/javascript">
var result="";
function jisuan(num)
{
if(num=="=")
{
document.form1.text.value=eval(result);
}
else if (num=="CE") // 用户按了"CE"键
{
result = "0";
document.form1.text.value=eval(result);
}else if (num=="Backspace")
{
var o = document.getElementById('text');
var v = o.value;
v.length > 0 && (o.value = v.substr(0, v.length - 1));
document.form1.text.value=eval(v.length - 1);
}
else{
result=result+num;
document.form1.text.value=result;
}
}
</script>
</html>

附上整体源代码

JAVA计算器

import java.awt.*;
import java.awt.event.*;
import java.math.*;
import javax.swing.*;
import java.awt.Color;
import bsh.Interpreter;
public class caculator2 extends JFrame {
public caculator2()
{
JFrame jf = new JFrame("徐天宇的哲学计算器");//对话框标题
Container pane=jf.getContentPane();//容器
pane.setLayout(new GridLayout(2,1));//网格总体布局二行一列
JPanel j1=new JPanel();//容器
j1.setLayout(new FlowLayout());
JPanel j2=new JPanel();
j2.setLayout(new GridLayout(4,8));//界面4*8按钮
final JTextField text = new JTextField(50);//文本域
text.setFont(new Font("楷体", Font.PLAIN, 30) );//文本域字体大小
JButton button1 = new JButton("1");//添加按钮
JButton button2 = new JButton("2");
JButton button3 = new JButton("3");
JButton button4 = new JButton("4");
JButton button5 = new JButton("5");
JButton button6 = new JButton("6");
JButton button7 = new JButton("7");
JButton button8 = new JButton("8");
JButton button9 = new JButton("9");
JButton button0 = new JButton("0");
JButton buttonadd = new JButton("+");
JButton buttonc = new JButton("C");
JButton buttonsubtract = new JButton("-");
JButton buttonmul = new JButton("×");
JButton buttondelete = new JButton("delete");
JButton buttondivide = new JButton("÷");
JButton buttonequal = new JButton("=");
JButton buttonnegation = new JButton("+/-");
JButton buttonbackwards = new JButton("1/x");
JButton buttondecimal = new JButton(".");
JButton buttonsin = new JButton("sin(X)");
JButton buttoncos = new JButton("cos(X)");
JButton buttontan = new JButton("tan(X)");
JButton buttoncsc = new JButton("csc(X)");
JButton buttonsec = new JButton("sec(X)");
JButton buttoncot = new JButton("cot(X)");
JButton buttonpi = new JButton("π");
JButton buttonsqrt = new JButton("√X");
JButton buttonpingfang = new JButton("X²");
JButton buttonlifang = new JButton("X³");
JButton buttonlifanggen = new JButton("³√X");
JButton buttonnuaa = new JButton("nuaa.work");
j1.add(text);//将文本域加到j1容器中
j2.add(button1);
j2.add(button2);
j2.add(button3);
j2.add(buttonadd);
j2.add(buttonc);
j2.add(buttonsqrt);
j2.add(buttonsin);
j2.add(buttoncsc);
j2.add(button4);
j2.add(button5);
j2.add(button6);
j2.add(buttonsubtract);
j2.add(buttondelete);
j2.add(buttonpingfang);
j2.add(buttoncos);
j2.add(buttonsec);
j2.add(button7);
j2.add(button8);
j2.add(button9);
j2.add(buttonmul);
j2.add(buttonbackwards);
j2.add(buttonlifang);
j2.add(buttontan);
j2.add(buttoncot);
j2.add(buttonnegation);
j2.add(button0);
j2.add(buttondecimal);
j2.add(buttondivide);
j2.add(buttonpi);
j2.add(buttonlifanggen);
j2.add(buttonequal);
j2.add(buttonnuaa);
pane.add(j1);
pane.add(j2);
text.setBackground(Color.yellow);//设置按钮前景和背景色
button1.setForeground(Color.orange);
button1.setBackground(Color.gray);
button2.setForeground(Color.orange);
button2.setBackground(Color.gray);
button3.setForeground(Color.orange);
button3.setBackground(Color.gray);
button4.setForeground(Color.orange);
button4.setBackground(Color.gray);
button5.setForeground(Color.orange);
button5.setBackground(Color.gray);
button6.setForeground(Color.orange);
button6.setBackground(Color.gray);
button7.setForeground(Color.orange);
button7.setBackground(Color.gray);
button8.setForeground(Color.orange);
button8.setBackground(Color.gray);
button9.setForeground(Color.orange);
button9.setBackground(Color.gray);
button0.setForeground(Color.orange);
button0.setBackground(Color.gray);
buttonnegation.setForeground(Color.CYAN);
buttonnegation.setBackground(Color.DARK_GRAY);
buttondecimal.setForeground(Color.CYAN);
buttondecimal.setBackground(Color.DARK_GRAY);
buttonpi.setForeground(Color.black);
buttonpi.setBackground(Color.gray);
buttonadd.setForeground(Color.red);
buttonadd.setBackground(Color.gray);
buttonsubtract.setForeground(Color.red);
buttonsubtract.setBackground(Color.gray);
buttonmul.setForeground(Color.red);
buttonmul.setBackground(Color.gray);
buttondivide.setForeground(Color.red);
buttondivide.setBackground(Color.gray);
buttonc.setForeground(Color.blue);
buttonc.setBackground(Color.gray);
buttondelete.setForeground(Color.blue);
buttondelete.setBackground(Color.gray);
buttonbackwards.setForeground(Color.blue);
buttonbackwards.setBackground(Color.gray);
buttonpi.setForeground(Color.orange);
buttonpi.setBackground(Color.gray);
buttonsin.setForeground(Color.green);
buttonsin.setBackground(Color.gray);
buttoncos.setForeground(Color.green);
buttoncos.setBackground(Color.gray);
buttontan.setForeground(Color.green);
buttontan.setBackground(Color.gray);
buttoncsc.setForeground(Color.magenta);
buttoncsc.setBackground(Color.gray);
buttonsec.setForeground(Color.magenta);
buttonsec.setBackground(Color.gray);
buttoncot.setForeground(Color.magenta);
buttoncot.setBackground(Color.gray);
buttonnuaa.setForeground(Color.white);
buttonnuaa.setBackground(Color.gray);
buttonsqrt.setForeground(Color.pink);
buttonsqrt.setBackground(Color.gray);
buttonpingfang.setForeground(Color.pink);
buttonpingfang.setBackground(Color.gray);
buttonlifang.setForeground(Color.pink);
buttonlifang.setBackground(Color.gray);
buttonlifanggen.setForeground(Color.pink);
buttonlifanggen.setBackground(Color.gray);
buttonequal.setForeground(Color.red);
buttonequal.setBackground(Color.black);
button1.addActionListener(new ActionListener()//数字键输入
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+"1");
}
});
button2.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+"2");
}
});
button3.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+"3");
}
});
button4.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+"4");
}
});
button5.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+"5");
}
});
button6.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+"6");
}
});
button7.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+"7");
}
});
button8.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+"8");
}
});
button9.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+"9");
}
});
button0.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+"0");
}
});
buttonpi.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+"3.141592653589793238462643383279");
}
});
buttondecimal.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+".");
}
});
buttonadd.addActionListener(new ActionListener()//功能键输入
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+"+");
}
});
buttonequal.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
try
{
Interpreter a = new Interpreter();
Object obj = a.eval(text.getText());
text.setText(obj+"");
}catch(Exception e2)
{
e2.printStackTrace();
}

}
});
buttonsubtract.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText()+"-");
}
});
buttonmul.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{

text.setText(text.getText()+"*");
}
});
buttondivide.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{

text.setText(text.getText()+"/");
}
});
buttonbackwards.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
double s;
s = Double.parseDouble(text.getText());
text.setText(1/s+"");
}
});
buttonnegation.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
double s;
s = Double.parseDouble(text.getText());
text.setText(-s+"");
}
});
buttondelete.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText(text.getText().substring(0,text.getText().length()-1));
}
});
/**/
buttonc.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
text.setText("0");

}
});
buttonsqrt.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
double s;
s = Double.parseDouble(text.getText());
text.setText(Math.sqrt(s)+"");
}
});
buttonpingfang.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
double s;
s = Double.parseDouble(text.getText());
text.setText(s*s+"");
}
});
buttonlifang.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
double s;
s = Double.parseDouble(text.getText());
text.setText(s*s*s+"");
}
});
buttonlifanggen.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
double s;
s = Double.parseDouble(text.getText());
text.setText(Math.pow(s, 1.0/3.0)+"");
}
});
buttonsin.addActionListener(new ActionListener()//求正弦值
{
public void actionPerformed(ActionEvent e)
{
double s;
s = Double.parseDouble(text.getText());
text.setText(Math.sin(Math.PI*s/180)+"");
}
});
buttoncos.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
double s;
s = Double.parseDouble(text.getText());
text.setText(Math.cos(Math.PI*s/180)+"");
}
});
buttontan.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
double s;
s = Double.parseDouble(text.getText());
text.setText(Math.tan(Math.PI*s/180)+"");
}
});
buttoncsc.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
double s;
s = Double.parseDouble(text.getText());
text.setText(1/(Math.sin(Math.PI*s/180))+"");
}
});
buttoncot.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
double s;
s = Double.parseDouble(text.getText());
text.setText(1/(Math.tan(Math.PI*s/180))+"");
}
});
buttonsec.addActionListener(new ActionListener()
{
public void actionPerformed(ActionEvent e)
{
double s;
s = Double.parseDouble(text.getText());
text.setText(1/(Math.cos(Math.PI*s/180))+"");
}
});
buttonnuaa.addActionListener(new ActionListener()
{
public void actionPerformed(final ActionEvent arg0) {
try {
Runtime.getRuntime().exec("cmd /c start http://nuaa.work");
} catch (Exception ex) {
System.out.println("error");
ex.printStackTrace();
}
}
});
jf.setSize(800,300);
jf.setVisible(true);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}

public static void main(String[] args)
{
caculator2 a = new caculator2();
a.setLocationRelativeTo(null);
}
}