Java大作业--计算器.doc

Java大作业-by小意思编写一个网络计算器。部分截图如下：标准型界面： 科学型界面：查看帮助文档：关于计算器：基本运算：历史记录如下：部分代码如下：由于是草稿，会存在这样或那样的错误，见谅。/Calculator源代码：/Calculator.javaimport java.awt.*;import java.awt.event.*;import javax.swing.*;import javax.swing.event.*;import javax.swing.border.*;import java.io.*;import .*;import java.util.*;class SubtleSquareBorder implements Border /给显示数值的Panel设置圆角矩形边框，参数true控制圆角，false表示矩形边框 protected int m_w=6; protected int m_h=6; protected int flag1=0,flag2=0,flag3=0,flag4=0; protected Color m_topColor=Color.blue; protected Color m_bottomColor=Color.blue; protected boolean roundc; public SubtleSquareBorder(boolean round_corners,int flag_1,int flag_2,int flag_3,int flag_4,Color color) roundc=round_corners; flag1=flag_1; flag2=flag_2; flag3=flag_3; flag4=flag_4; m_topColor=m_bottomColor=color; public Insets getBorderInsets(Component c) return new Insets(m_h,m_w,m_h,m_w); public boolean isBorderOpaque() return true; public void paintBorder(Component c,Graphics g,int x,int y,int w,int h) w=w-3; h=h-3; x+; y+; /Rounded corners if(roundc) g.setColor(m_topColor); if (flag1=1) g.drawLine(x,y+2,x,y+h-2); /left if (flag2=1) g.drawLine(x+2,y,x+w-2,y); /up g.drawLine(x,y+2,x+2,y); / Top left diagonal g.drawLine(x,y+h-2,x+2,y+h); /Bottom left diagonal g.setColor(m_bottomColor); if (flag3=1) g.drawLine(x+w,y+2,x+w,y+h-2); /right if (flag4=1) g.drawLine(x+2,y+h,x+w-2,y+h); /down g.drawLine(x+w-2,y,x+w,y+2); /Top right diagonal g.drawLine(x+w,y+h-2,x+w-2,y+h); / Bottom right diagonal /Square corners else g.setColor(m_topColor); if (flag1=1) g.drawLine(x,y,x,y+h); /left if (flag2=1) g.drawLine(x,y,x+w,y); /up g.setColor(m_bottomColor); if (flag3=1) g.drawLine(x+w,y,x+w,y+h); /right if (flag4=1) g.drawLine(x,y+h,x+w,y+h); /down public class Calculator extends JFrame implements Runnableprivate JMenuBar mb;private JMenu viewMenu,editMenu,helpMenu;private JMenuItem standard,science,copy,paste,history,help,about;private StringBuffer copytext=new StringBuffer(); private JPanel panel,panel1,panel2,panel_1,panel_2,panel_3,panel_4,historyPanel; private JRadioButton du,tidu,hudu; private ButtonGroup bg; private JTextArea historyText; private JLabel label; private JLabel label1; private String names=,CE,C,7,8,9,+,4,5,6,-,1,2,3,*,0,.,=,/; private String names1=sin,cos,tan,(,),X2,X3,XY,3X,YX,Mod; private JButton buttons=new JButton20; private JButton buttons1=new JButton12; private historyFrame historyframe; private int start_label1,start_num,kuohao_num; /同级运算时，使用的标记 private int location_num,location_label1; /记录括号的起始位置 MyListener mylistener=new MyListener(); double ans=0; char sign=0; String num=; String PI=3.141592653589793; int flag=1,flag2=0;/标记flag记录的是该算式是否计算出结果了，flag2记录的是是否涉及根号，1表示涉及。 int mark_pow=0;BufferedReader in=null;PrintStream out=null;Socket socket=null;Thread thread;public Calculator(String title)super(title);socket=new Socket();mb=new JMenuBar();viewMenu=new JMenu(查看);editMenu=new JMenu(编辑);helpMenu=new JMenu(帮助); standard=new JMenuItem( 标准型); science=new JMenuItem( 科学型); copy=new JMenuItem(复制); paste=new JMenuItem(粘贴); history=new JMenuItem( 历史); help=new JMenuItem(关于帮助); about=new JMenuItem(关于计算器); du=new JRadioButton(度,true); tidu=new JRadioButton(梯度,false); hudu=new JRadioButton(弧度,false); bg=new ButtonGroup(); bg.add(du); bg.add(tidu); bg.add(hudu);mb.add(viewMenu);mb.add(editMenu);mb.add(helpMenu);viewMenu.add(standard);viewMenu.add(science);viewMenu.addSeparator();viewMenu.add(history);editMenu.add(copy);editMenu.add(paste);helpMenu.add(help);helpMenu.add(about);standard.addActionListener(mylistener);science.addActionListener(mylistener);copy.addActionListener(mylistener);paste.addActionListener(mylistener);history.addActionListener(mylistener);help.addActionListener(mylistener);about.addActionListener(mylistener);label=new JLabel(0,4);label1=new JLabel(,4);panel=new JPanel();panel1=new JPanel();panel2=new JPanel();panel_1=new JPanel();panel_2=new JPanel();panel_3=new JPanel();panel_4=new JPanel();panel.setLayout(new GridLayout(5,4,1,1);panel1.setLayout(new GridLayout(2,1);panel1.setBorder(new SubtleSquareBorder(false,1,1,1,1,Color.blue);panel2.setLayout(new BorderLayout();/label1.setBackground(Color.white);/label.setBackground(Color.white);panel1.add(label1);panel1.add(label);historyframe=new historyFrame();historyPanel=new JPanel();historyPanel.setLayout(new GridLayout(1,1,0,0);historyText=new JTextArea(3,1);historyText.setEditable(false);historyText.setBackground(panel1.getBackground();/(new Color(190,220,250);JScrollPane jscroll=new JScrollPane(historyText);historyPanel.add(jscroll,BorderLayout.CENTER);/historyPanel.add(historyText,BorderLayout.CENTER);historyframe.add(historyPanel);panel2.add(historyPanel,BorderLayout.CENTER);add(mb,BorderLayout.NORTH);add(panel1,BorderLayout.CENTER);add(panel,BorderLayout.SOUTH);thread=new Thread(this);start_label1=start_num=kuohao_num=0;location_num=new int10;location_label1=new int10;for (int i=0; i10; i+)location_numi=location_label1i=0;for (int i=0; ibuttons.length; i+) buttonsi=new JButton(namesi); buttonsi.setFont(new Font(宋体,Font.PLAIN,21); buttonsi.addActionListener(mylistener); panel.add(buttonsi);if (buttonsi.getText().equals(0)|(buttonsi.getText().equals(1)|(buttonsi.getText().equals(2)|(buttonsi.getText().equals(3)|(buttonsi.getText().equals(4)|(buttonsi.getText().equals(5)|(buttonsi.getText().equals(6)|(buttonsi.getText().equals(7)|(buttonsi.getText().equals(8)|(buttonsi.getText().equals(9)|(buttonsi.getText().equals(0)|(buttonsi.getText().equals(.)|(buttonsi.getText().equals(=)buttonsi.setBackground(new Color(255,255,254);buttonsi.setForeground(Color.blue);for (int i=0; ibuttons1.length; i+)buttons1i=new JButton(names1i);buttons1i.setFont(new Font(宋体,Font.PLAIN,21);buttons1i.addActionListener(mylistener);pack();/setSize(240,250);setVisible(true);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); public void reset(int flag)if (flag=0)standard.setText( 标准型);science.setText( 科学型);/label1.setBackground(Color.white);/label.setBackground(Color.white);panel.removeAll();panel.setLayout(new GridLayout(5,4,1,1);for (int i=0; ibuttons.length; i+)panel.add(buttonsi);pack();elsestandard.setText( 标准型);science.setText( 科学型);panel.removeAll();panel.setLayout(new BorderLayout();panel.add(panel_1,BorderLayout.WEST);panel.add(panel_2);panel_2.setLayout(new GridLayout(5,4,1,1);panel_1.setLayout(new BorderLayout();panel_1.add(panel_3,BorderLayout.NORTH);panel_1.add(panel_4);panel_3.setLayout(new GridLayout(1,3);panel_4.setLayout(new GridLayout(4,3,1,1);du.setFont(new Font(宋体,Font.PLAIN,13);hudu.setFont(new Font(宋体,Font.PLAIN,13);tidu.setFont(new Font(宋体,Font.PLAIN,13);panel_3.add(du); panel_3.add(hudu); panel_3.add(tidu);panel_3.setBorder(new SubtleSquareBorder(true,1,1,1,1,Color.gray);for (int i=0; ibuttons1.length; i+)panel_4.add(buttons1i);for (int i=0; ibuttons.length; i+)panel_2.add(buttonsi);pack();thread.start(); public double calculate(double ans,char sign,String num)if (sign=0 & num=) return ans;if (sign=0 & num!=)ans=Double.parseDouble(num); return ans;elseif (num.length()=0) num=0; switch(sign)case +: ans+=Double.parseDouble(num); break;case -: ans-=Double.parseDouble(num); break;case *: ans*=Double.parseDouble(num); break;case /: if (!(Double.parseDouble(num)=0) ans/=Double.parseDouble(num); return ans; public String round(double ans) /判断是否为整数，如果是整数的话化简成整形 if (ans-(int)(ans)=0.00000000001) return +(int)(ans); else if (1-(ans-(int)(ans)=0.00000000001) return +(int)(ans)+1); else return +ans; public void run() String ans1; try InetAddress address=InetAddress.getByName(); InetSocketAddress socketAddress=new InetSocketAddress(address,4331); socket.connect(socketAddress); in=new BufferedReader(new InputStreamReader(socket.getInputStream(); out=new PrintStream(socket.getOutputStream(); catch(Exception e)System.out.println(与服务器断开); while(true) try ans1=in.readLine(); if (ans1.equals(ERROR) label1.setHorizontalAlignment(0); label1.setText(ERRORn); label.setText(); else/historyText.append(label1.getText()+label.getText(); label.setText(round(Double.parseDouble(ans1);historyText.append(=+label.getText()+n); catch(IOException e) class MyListener implements ActionListenerpublic void actionPerformed(ActionEvent e)if (e.getSource()=standard)reset(0);/设置标准型的面板和功能函数else if (e.getSource()=science)reset(1);/设置科学型的面板和功能函数else if (e.getSource()=copy)copytext.delete(0,copytext.length();copytext.append(label.getText();/复制类容else if (e.getSource()=paste)if (flag=1)num+=copytext.substring(0,copytext.length();else num=num.substring(0,num.length()-label.getText().length();num+=copytext.substring(0,copytext.length();label.setText(copytext.substring(0,copytext.length();/粘贴功能else if (e.getSource()=history)if (history.getText().equals( 历史)history.setText( 历史);remove(panel1);panel2.add(panel1,BorderLayout.SOUTH);panel2.setBorder(new SubtleSquareBorder(false,1,1,1,1,Color.blue);panel1.setBorder(new SubtleSquareBorder(false,0,1,0,0,Color.blue);add(panel2,BorderLayout.CENTER);pack();validate();elsehistory.setText( 历史);remove(panel2);add(panel1,BorderLayout.CENTER);panel1.setBorder(new SubtleSquareBorder(false,1,1,1,1,Color.blue);pack();validate();/historyframe.setVisible(true);/historyframe.setSize(200,300);else if (e.getSource()=help)trynew aboutFrame();catch(Exception fra)else if (e.getSource()=about)/ 关于菜单：弹出程序及作者信息JOptionPane.showOptionDialog(null, 程序名称:n 计算器nn+ 设计者:n 茅志仁+ 兰州大学信息科学与工程学院电商专业nn + 关于本计算器:n+ 本计算器可以完成任意的通常借助手持计算器n+ 来完成的标准运算，同时还具有科学计算器的功能。n+ 本计算器完全免费，欢迎网友下载研究交流QQ1437895850, 关于计算器,JOptionPane.DEFAULT_OPTION,JOptionPane.INFORMATION_MESSAGE, null, null, null);if (standard.getText().equals( 标准型) /客户端直接计算的情况 for (int i=0; i20; i+)if (e.getSource()=buttonsi) if (label1.getText().equals(ERROR) label1.setHorizontalAlignment(4); label1.setText(); switch (i) case 0: /1) label.setText(label.getText().substring(0,label.getText().length()-1); num=num.substring(0,num.length()-1); else label.setText(+0); num=; flag=1; break; case 1: /CE键 if (flag2!=1) label.setText(+0); flag=1; num=; break; case 2: /C键 label1.setText(); label.setText(0); flag=1; flag2=0; ans=0; num=; sign=0; start_num=start_label1=0; break; case 3: /算根号，有点地方要设计一下； if (label1.getText().endsWith() label1.setText(label1.getText().substring(0,start_label1) +sqrt(+label1.getText().substring(start_label1,label1.getText().length()+); num=+round(Math.sqrt(Double.parseDouble(label.getText(); label.setText(num); else if (Double.parseDouble(label.getText()=0) label1.setText(label1.getText()+sqrt(+label.getText()+); num=+round(Math.sqrt(Double.parseDouble(label.getText(); label.setText(num); else label1.setHorizontalAlignment(0); label1.setText(ERROR); /label1.setHorizontalAlignment(2); label.setText(); flag2=1; /flag=1; break;case 7: /加号if(flag=1&label1.getText().length()0)label1.setText(label1.getText().substring(0,label1.getText().length()-1)+);sign=+;break;ans=calculate(ans,sign,num);if (sign=/ & (Double.parseDouble(num)=0) label1.setHorizontalAlignment(0); label1.setText(ERROR); /输出ERROR并设置居中 label.setText();else if (flag2!=1) label1.setText(label1.getText()+label.getText()+); else flag2=0; label1.setText(label1.getText()+); label.setText(round(ans);flag=1; sign=+; num=;start_label1=label1.getText().length();break;case 11: /减号if(flag=1&label1.getText().length()0)label1.setText(label1.getText().substring(0,label1.getText().length()-1)+-);sign=-;break;ans=calculate(ans,sign,num);if (sign=/ & (Double.parseDouble(num)=0) label1.setHorizontalAlignment(0); label1.setText(ERROR); /label1.setHorizontalAlignment(2); label.setText();else if (flag2!=1) label1.setText(label1.getText()+label.getText()+-); else flag2=0; label1.setText(label1.getText()+-); label.setText(round(ans);flag=1;sign=-; num=; start_label1=label1.getText().length();break;case 15: /乘号if(flag=1&label1.getText().length()0)label1.setText(label1.getText().substring(0,label1.getText().length()-1)+*);sign=*;break;ans=calculate(ans,sign,num);if (sign=/ & (Double.parseDouble(num)=0) label1.setHorizontalAlignment(0); label1.setText(ERROR); /label1.setHorizontalAlignment(2); label.setText();else if (flag2!=1) label1.setText(label1.getText()+label.getText()+*); else flag2=0; label1.setText(label1.getText()+*); label.setText(round(ans);flag=1;sign=*; num=; start_label1=label1.getText().length();break;case 16: /数字0if (flag=1) label.setText(0); flag=0;else label.setText(label.getText()+0);num+=0; break;case 17: /小数点if (num.endsWith(.) break;if (num.length()=0)label.setText(label.getText()+.);num+=label.getText();elselabel.setText(label.getText()+.);num+=.; break;case 18: /等于号 if (sign=/ & (num.length()=0)|(Double.parseDouble(num)=0) label1.setHorizontalAlignment(0); label1.setText(ERROR); label.setText();else ans=calculate(ans,sign,num); /开始计算 historyText.append(label1.getText(); if (!(label1.getText().endsWith() historyText.append(label.getText(); label.