计算器交互式Java程序设计

1、网络交互式-计算器程序： -兰州大学 Java课程设计1.要求： 利用GUI编程技术、网络编程技术、输入输出流技术，编写一个基于C/S的计算器软件。前台为类似于图1的图形界面，主要解决输入界面问题，可以解决简单计算问题，将复杂函数计算如sin、开平方根等操作交给后台服务器计算，计算后结果返回客户端显示，并将客户端的IP地址，发来的计算请求记录在一个日志文件calculate.log。2.实现： 主类: 服务器类：CalculatorServer 客户端类：CalculatorClient 辅类: 查看日志类：lookJFrame 图形面板类：mydraws & mycanvas/客户端impo

2、rt .*;import java.io.*;import java.awt.*;import java.awt.event.*;import javax.swing.*;import javax.swing.event.*;class CalculatorClient extends JFrame implements Runnable,ActionListenerprivate JTextField show;private Panel dispMain,dispLeft,dispRight;/主（左右面板）private JButton b;/数字private JButton jia,

3、jian,cheng,chu,xy,cos,sin,ln,ce,equ,bfh,point,zf,sqrt;/加减乘除各种运算按钮private Socket socket;private DataInputStream in=null;private DataOutputStream out=null;private Thread thread;private Double result;private Double d1,d2;private int j,action,op;private String opp;private JLabel labelconnect;private JBu

4、tton buttonconnect;private JMenuItem close,version,look,edit,word,background,caltuxing;/菜单栏 菜单项设置public CalculatorClient() super(马康-计算器客户端); JMenuBar mb=new JMenuBar();/菜单栏 JMenu filemenu=new JMenu(计算器); JMenu bigmenu=new JMenu(放大); JMenu calmenu=new JMenu(画板); JMenu vermenu=new JMenu(关于); JMenu edi

5、tmenu=new JMenu(编辑); look=new JMenuItem(查看日志); close=new JMenuItem(退出); version=new JMenuItem(作者); background=new JMenuItem(背景); caltuxing=new JMenuItem(图形画板); word=new JMenuItem(放大); filemenu.add(look); filemenu.add(close); vermenu.add(version); editmenu.add(background); calmenu.add(caltuxing); big

6、menu.add(word); mb.add(filemenu); mb.add(editmenu); mb.add(calmenu); mb.add(bigmenu); mb.add(vermenu); this.setJMenuBar(mb); look.addActionListener(this); close.addActionListener(this); background.addActionListener(this); word.addActionListener(this); version.addActionListener(this); caltuxing.addAc

7、tionListener(this); socket=new Socket(); Image image = getToolkit().getImage(getClass().getResource(calculator.jpg); setIconImage(image);/左上角图片设置 setSize(360, 250); setLocation(400, 300); setBackground(Color.LIGHT_GRAY);/背景设置 setLayout(new FlowLayout(FlowLayout.CENTER); setResizable(false); show=new

8、 JTextField(31); show.setText(); show.setHorizontalAlignment(SwingConstants.RIGHT);/文本框内容右对齐 show.setEditable(false); add(show); dispMain=new Panel(); add(dispMain); buttonconnect=new JButton(连接服务器); labelconnect=new JLabel(); add(buttonconnect); add(labelconnect); dispMain.setLayout(new GridLayout(

9、1, 2, 10, 10); dispLeft=new Panel(); dispMain.add(dispLeft); dispLeft.setLayout(new GridLayout(4, 3, 3, 3); dispRight=new Panel(); dispMain.add(dispRight); dispRight.setLayout(new GridLayout(4, 3, 3, 3); b=new JButton10; int l; for(l=9;l=0;l-) /0-9数字按钮 bl=new JButton(String.valueOf(l); bl.setForegro

10、und(Color.BLUE); dispLeft.add(bl); bl.addActionListener(this); /监听设置 bl.setFocusPainted(false); /去掉焦点框 jia=new JButton(+); jian=new JButton(-); cheng=new JButton(*); chu=new JButton(/); xy=new JButton(xy); cos=new JButton(cos); sin=new JButton(sin); ln=new JButton(ln);/ ce=new JButton(CE);/清除 equ=ne

11、w JButton(=);/等号 bfh=new JButton(%);/求模 point=new JButton(.);/小数点 zf=new JButton( +/- );/正负号 sqrt=new JButton();/根号 jia.setFocusPainted(false); /去掉焦点框 jian.setFocusPainted(false); /去掉焦点框 cheng.setFocusPainted(false); /去掉焦点框 chu.setFocusPainted(false); /去掉焦点框 xy.setFocusPainted(false); /去掉焦点框 cos.set

12、FocusPainted(false); /去掉焦点框 sin.setFocusPainted(false); /去掉焦点框 ln.setFocusPainted(false); /去掉焦点框 ce.setFocusPainted(false); /去掉焦点框 equ.setFocusPainted(false); /去掉焦点框 bfh.setFocusPainted(false); /去掉焦点框 point.setFocusPainted(false); /去掉焦点框 zf.setFocusPainted(false); /去掉焦点框 sqrt.setFocusPainted(false);

13、 /去掉焦点框 buttonconnect.setFocusPainted(false); /去掉焦点框 /右面板 运算符按钮 dispRight.add(chu); dispRight.add(sqrt); dispRight.add(ln); dispRight.add(cheng); dispRight.add(sin); dispRight.add(bfh); dispRight.add(jian); dispRight.add(cos); dispRight.add(ce); dispRight.add(jia); dispRight.add(xy); dispRight.add(e

14、qu); /左面板 正负号/小数点按钮 dispLeft.add(zf); dispLeft.add(point); /按钮监听设置 ce.addActionListener(this); jia.addActionListener(this); jian.addActionListener(this); cheng.addActionListener(this); chu.addActionListener(this); equ.addActionListener(this); point.addActionListener(this); zf.addActionListener(this)

15、; sqrt.addActionListener(this); bfh.addActionListener(this); sin.addActionListener(this); cos.addActionListener(this); xy.addActionListener(this); ln.addActionListener(this); buttonconnect.addActionListener(this); setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); setVisible(true); d1=0.0;d2=0.0;op=0;

16、public void run() public void actionPerformed(ActionEvent e) if(e.getSource()=look)new lookJFrame();/查看日志 if(e.getSource()=caltuxing) /图形画板 mydraws myapp=new mydraws(); myapp.setSize(380,300); myapp.setLocation(400, 300); myapp.setVisible(true); if(e.getSource()=background)/背景设置 Color color=JColorCh

17、ooser.showDialog(Component)e.getSource().getParent(),自定义,Color.LIGHT_GRAY);getContentPane().setBackground(color);if(e.getSource()=word)/放大按钮setSize(550, 280);show.setColumns(47);int i=0;for(i=0;i=9;i+)bi.setFont(new Font(宋体,Font.PLAIN,20);jia.setFont(new Font(宋体,Font.PLAIN,20); jian.setFont(new Font

18、(宋体,Font.PLAIN,20); cheng.setFont(new Font(宋体,Font.PLAIN,20); chu.setFont(new Font(宋体,Font.PLAIN,20); xy.setFont(new Font(宋体,Font.PLAIN,20); cos.setFont(new Font(宋体,Font.PLAIN,20); sin.setFont(new Font(宋体,Font.PLAIN,20); ln.setFont(new Font(宋体,Font.PLAIN,20); ce.setFont(new Font(宋体,Font.PLAIN,20); e

19、qu.setFont(new Font(宋体,Font.PLAIN,20); bfh.setFont(new Font(宋体,Font.PLAIN,20); point.setFont(new Font(宋体,Font.PLAIN,20); zf.setFont(new Font(宋体,Font.PLAIN,20); sqrt.setFont(new Font(宋体,Font.PLAIN,20); if(e.getSource()=close) System.exit(0);/关闭 /作者 if(e.getSource()=version) JOptionPane.showMessageDia

20、log(null, 交互式计算器n Java实验程序作业n 作者: *n兰州大学12电子商务); /连接服务器 if(e.getSource()=buttonconnect)tryif(socket.isConnected()elseInetAddress address=InetAddress.getByName(127.0.0.1);/此类表示互联网协议 (IP) 地址。 InetSocketAddress socketAddress=new InetSocketAddress(address.getLocalHost(),4444); /getLocalHost()返回本地主机socke

21、t.connect(socketAddress);/ connect(SocketAddress endpoint) 将此套接字连接到服务器 in=new DataInputStream(socket.getInputStream();/socket返回输入流 out=new DataOutputStream(socket.getOutputStream();/socket返回输出流 labelconnect.setText(已连接到服务器); thread.start(); catch(IOException ee) /正负 if(e.getSource()=zf) if(show.getT

22、ext().toString().equals() show.setText(-); else if(show.getText().toString().equals(-) show.setText(); else try d1=Double.parseDouble(show.getText(); d1=-d1; String dd=+d1; dd=dd.substring(0,dd.length()-2); show.setText(dd); catch(Exception ee) /小数点 if(e.getSource()=point) int f; String sshow=show.g

23、etText(); if(f=sshow.indexOf(.)!=-1)/若已存在小数点 JOptionPane.showMessageDialog(null,小数点已存在！); else /不存在小数点 if(sshow.equals() show.setText(0.); else if(sshow.equals(-) show.setText(-0.); else show.setText(show.getText()+.); /清除 if(e.getSource()=ce) show.setText(); /加法运算符 if(e.getSource()=jia) opp=+; try

24、d1=Double.parseDouble(show.getText(); op=0; show.setText(); catch(Exception ee) /减法运算符 if(e.getSource()=jian) opp=-; try d1=Double.parseDouble(show.getText(); op=1; show.setText(); catch(Exception ee) /乘法运算符 if(e.getSource()=cheng) opp=*; try d1=Double.parseDouble(show.getText(); op=2; show.setText(

25、); catch(Exception ee) /除法运算符 if(e.getSource()=chu) opp=/; try d1=Double.parseDouble(show.getText(); op=3; show.setText(); catch(Exception ee) / /服务器运算的运算符 / /x的y次方 if(e.getSource()=xy) opp=xy; try d1=Double.parseDouble(show.getText(); op=5; show.setText(); catch(Exception ee) /cos运算符 if(e.getSource

26、()=cos) opp=cos; try d1=Double.parseDouble(show.getText(); op=6; show.setText(); catch(Exception ee) /sin运算符 if(e.getSource()=sin) opp=sin; try d1=Double.parseDouble(show.getText(); op=7; show.setText(); catch(Exception ee) /ln运算符 if(e.getSource()=ln) opp=ln; try d1=Double.parseDouble(show.getText()

27、; op=8; show.setText(); catch(Exception ee) /百分比运算符 if(e.getSource()=bfh) opp=%; try d1=Double.parseDouble(show.getText(); op=9; show.setText(); catch(Exception ee) /根号运算符 if(e.getSource()=sqrt) opp=; try d1=Double.parseDouble(show.getText(); op=4; show.setText(); catch(Exception ee) /等号 if(e.getSou

28、rce()=equ) int a,b=1; /a的值用于服务器端的计算，传到服务器端，不同的值代表不同的运算符 try d2=Double.parseDouble(show.getText(); switch(op) case 0: result=d1+d2; break; case 1: result=d1-d2; break; case 2: result=d1*d2; break; case 3: if(d2=0) JOptionPane.showMessageDialog(null,除数不能为零，请重输);b=0; else result=d1/d2; break; case 4: i

29、f(d2=0) JOptionPane.showMessageDialog(null,根号数值不能小于零，请重输);b=0; else result=Math.sqrt(d2); break; case 5: /xy a=5; out.writeInt(a); out.writeDouble(d1); out.writeDouble(d2); try result=in.readDouble(); catch(IOException e1)labelconnect.setText(与服务器已断开); break; case 6: /cos a=6; out.writeInt(a); out.w

30、riteDouble(d2); try result=in.readDouble(); catch(IOException e2)labelconnect.setText(与服务器已断开); break; case 7: /sin a=7; out.writeInt(a); out.writeDouble(d2); try result=in.readDouble(); catch(IOException e3)labelconnect.setText(与服务器已断开); break; case 8: /ln a=8; if(d2=0) JOptionPane.showMessageDialo

31、g(null,数值需大于零，请重输);b=0; else out.writeInt(a); out.writeDouble(d2); try result=in.readDouble(); catch(IOException e4)labelconnect.setText(与服务器已断开); break; case 9: /bfh a=9; out.writeInt(a); out.writeDouble(d1); out.writeDouble(d2); try result=in.readDouble(); catch(IOException e5)labelconnect.setText

32、(与服务器已断开); break; default: if(b=1) show.setText(String.valueOf(result); else show.setText(); a=1; /a=1代表传到服务器处进行保存到日志中 out.writeInt(a); out.writeDouble(d1); out.writeDouble(d2); out.writeUTF(opp); out.writeDouble(result); catch(Exception ee1) /数值0-9 if(e.getSource()=b0) if(!(show.getText().equals(0)

33、|show.getText().equals(-0) show.setText(show.getText()+0); if(e.getSource()=b1) if(show.getText().equals(0) show.setText(1); else if(show.getText().equals(-0) show.setText(-1); else show.setText(show.getText()+1); if(e.getSource()=b2) if(show.getText().equals(0) show.setText(2); else if(show.getText

34、().equals(-0) show.setText(-2); else show.setText(show.getText()+2); if(e.getSource()=b3) if(show.getText().equals(0) show.setText(3); else if(show.getText().equals(-0) show.setText(-3); else show.setText(show.getText()+3); if(e.getSource()=b4) if(show.getText().equals(0) show.setText(4); else if(sh

35、ow.getText().equals(-0) show.setText(-4); else show.setText(show.getText()+4); if(e.getSource()=b5) if(show.getText().equals(0) show.setText(5); else if(show.getText().equals(-0) show.setText(-5); else show.setText(show.getText()+5); if(e.getSource()=b6) if(show.getText().equals(0) show.setText(6);

36、else if(show.getText().equals(-0) show.setText(-6); else show.setText(show.getText()+6); if(e.getSource()=b7) if(show.getText().equals(0) show.setText(7); else if(show.getText().equals(-0) show.setText(-7); else show.setText(show.getText()+7); if(e.getSource()=b8) if(show.getText().equals(0) show.se

37、tText(8); else if(show.getText().equals(-0) show.setText(-8); else show.setText(show.getText()+8); if(e.getSource()=b9) if(show.getText().equals(0) show.setText(9); else if(show.getText().equals(-0) show.setText(-9); else show.setText(show.getText()+9); public static void main(String args) new Calcu

38、latorClient(); /查看日志 lookJFrame类 class lookJFrame extends JFrame private JTextArea txt; private Container con; public lookJFrame() super(计算器日志); con=this.getContentPane(); final Image image=getToolkit().getImage(getClass().getResource(27.jpg); /final ImageIcon img=new ImageIcon(H:/星空物语/java实验/Java图标

39、/19.jpg); txt=new JTextArea()public void paintComponent(Graphics g) g.drawImage(image, 0, 0, null); super.paintComponent(g); ;/文本域 txt.setOpaque(false);/设置为透明add(txt);try FileReader file=new FileReader(calculate.log); BufferedReader in=new BufferedReader(file); String s=calculate.log; txt.append(s+n

40、); while(s=in.readLine()!=null) txt.append(s+n); in.close(); file.close(); catch(IOException exp) txt.setText(无此文件); setSize(600, 400); setLocation(270, 100); setVisible(true);/服务器端import java.io.*;import .*;import java.util.*;import java.text.*;public class CalculatorServerpublic static void main(S

41、tring args)ServerSocket server=null;ServerThread thread;Socket client=null; System.out.println(n-计算器 服务器-n);while(true)tryserver=new ServerSocket(4444);catch(IOException e1)System.out.println(正在监听);tryclient=server.accept();/server返回和客户端相连接的SocketSystem.out.println(客户的地址:+client.getInetAddress();catch(IOException e)System.out.println(正在等待客户);if(client!=null)new ServerThread(client).start();elsecontinue;class ServerThread extends ThreadSocket socket;Dat