实验九-图形用户界面与对话框

实验九图形用户界面与对话框1.实验目的1、学会处理ActionEvent事件2、学会使用布局类3、学习焦点、鼠标和键盘事件4、学习使用输入和消息对话框2.实验内容1、根据附录里的源代码，按照注释要求，完成代码填空，使程序能够运行得出结果。

1) 实验1算术测试2) 实验2布局与日历3) 实验3华容道4) 实验4字体对话框5) 实验5计算平方根6) 实验6简易计算器2、设计编写程序完成以下任务。

1）修改实验1的代码，再增加“小学生”级别，并增加测试乘、除法的功能。

2）编写一个应用程序，用户可以在一个文本框里输入数字字符，按Enter 键后将数字放入一个文本区。

当输入的数字大于1000时，弹出一个有模式的对话框，提示用户数字已经大于1000，是否继续将该数字放入文本区。

3）编写应用程序，有一个标题为“移动”的窗口，窗口布局为null，在窗口中有两个按钮，单击一个按钮让另一个按钮移动。

4）仿照操作系统中的简易计算机，自行设计一个能进行加减乘除运算的计算器。

需要考虑先进性乘除运算再进行加减运算。

3.实验步骤略4.评分标准1.A——内容功能完善，编程风格好，人机接口界面好；2.B——内容功能完善，编程风格良好，人机接口界面良好；3.C——完成必做内容；4.D——能完成必做内容；5.E——未按时完成必做内容，或者抄袭（雷同者全部为E）.参照书上实验按模版要求，将【代码】替换为Java程序代码，编写好完整的程序文档，最后运行得到的相关文件，把实验所得文件一起打包上交。

（压缩包的文件名为：学号后三位和名字开头字母，如109zhh．RAR|ZIP）附录：实验1 算术测试模板代码Teacher.javaimport java.util.Random;import java.awt.event.*;import javax.swing.*;public class Teacher implements ActionListener{int numberOne,numberTwo;String operator=" ";boolean isRight;Random random;int maxInteger;JTextField textOne,textTwo,textResult;JLabel operatorLabel,message;Teacher(){random=new Random();}public void setMaxInteger(int n){maxInteger=n;}public void actionPerformed(ActionEvent e){String str=e.getActionCommand();if(str.equals("getProblem")){numberOne=random.nextInt(maxInteger)+1;numberTwo=random.nextInt(maxInteger)+1;double d=Math.random();if(d>=0.5){operator="+";}else{operator="-";}textOne.setText(""+numberOne);textTwo.setText(""+numberTwo);operatorLabel.setText(operator);message.setText("请回答");textResult.setText(null);}else if(str.equals("answer")){String answer=textResult.getText();try{int result=Integer.parseInt(answer);if(operator.equals("+")){if(result==numberOne+numberTwo){message.setText("你回答正确");}else{message.setText("你回答错误");}}else if(operator.equals("-")){if(result==numberOne-numberTwo){message.setText("你回答正确");}else{message.setText("你回答错误");}}}catch(NumberFormatException ex){message.setText("请输入数字字符");}}}public void setJTextField(JTextField...t){textOne =t[0];textTwo =t[1];textResult =t[2];}public void setJLabel(bel){operatorLabel=label[0];message=label[1];}}ComputerFrame.javaimport java.awt.*;import java.awt.event.*;import javax.swing.*;public class ComputerFrame extends JFrame{JMenuBar menubar;JMenu choiceGrade;JMenuItem grade1,grade2;JTextField textOne,textTwo,textResult;JButton getProblem,giveAnswer;JLabel operatorLabel,message;Teacher teacherZhang;ComputerFrame(){teacherZhang=new Teacher();teacherZhang.setMaxInteger(20);setLayout(new FlowLayout());menubar=new JMenuBar();choiceGrade=new JMenu("选择级别");grade1=new JMenuItem("幼儿级别");grade2=new JMenuItem("儿童级别");grade1.addActionListener(new ActionListener(){public void actionPerformed(ActionEvent e){teacherZhang.setMaxInteger(10);}});grade2.addActionListener(new ActionListener(){public void actionPerformed(ActionEvent e){teacherZhang.setMaxInteger(50);}});choiceGrade.add(grade1);choiceGrade.add(grade2);menubar.add(choiceGrade);setJMenuBar(menubar);//【代码1】//创建textOne,其可见字符长是5textTwo=new JTextField(5);textResult=new JTextField(5);operatorLabel=new JLabel("+");operatorLabel.setFont(new Font("Arial",Font.BOLD,20));message=new JLabel("你还没有回答呢");getProblem=new JButton("获取题目");giveAnswer=new JButton("确认答案");add(getProblem);add(textOne);add(operatorLabel);add(textTwo);add(new Label("="));add(textResult);add(giveAnswer);add(message);textResult.requestFocus();textOne.setEditable(false);textTwo.setEditable(false);getProblem.setActionCommand("getProblem");textResult.setActionCommand("answer");giveAnswer.setActionCommand("answer");teacherZhang.setJTextField(textOne,textTwo,textResult);teacherZhang.setJLabel(operatorLabel,message);//【代码2】//将teacherZhang注册为getProblem的ActionEvent事件监视器//【代码3】//将teacherZhang注册为giveAnswer的ActionEvent事件监视器//【代码4】//将teacherZhang注册为textResult的ActionEvent事件监视器setVisible(true);validate();setDefaultCloseOperation(DISPOSE_ON_CLOSE);}}MainClass.javapublic class MainClass {public static void main(String[] args) {ComputerFrame frame;frame=new ComputerFrame();frame.setTitle("算术测试");frame.setBounds(100,100,650,180);}}实验2 布局与日历模板代码CalendarBean.javaimport java.util.Calendar;public class CalendarBean {String [] day;int year=2008,month=0;public int getYear() {return year;}public void setYear(int year) {this.year = year;}public int getMonth() {return month;}public void setMonth(int month) {this.month = month;}public String [] getCalendar() {String [] a=new String[42];Calendar 日历=Calendar.getInstance();日历.set(year,month-1,1);int 星期几=日历.get(Calendar.DAY_OF_WEEK)-1;int day=0;if(month==1||month==3||month==5||month==7||month==8||month==10||month==12) day=31;if(month==4||month==6||month==9||month==11)day=30;if(month==2) {if(((year%4==0)&&(year%100!=0))||(year%400==0))day=29;elseday=28;}for(int i=星期几,n=1;i<星期几+day;i++) {a[i]=String.valueOf(n) ;n++;}return a;}}CalendarFrame.javaimport java.awt.event.*;import javax.swing.*;import javax.swing.border.*;import java.awt.*;import java.util.*;public class CalendarFrame extends JFrame implements ActionListener {JLabel labelDay[]=new JLabel[42];JButton titleName[]=new JButton[7];String name[]={"日","一","二","三","四","五","六"};JButton nextMonth,previousMonth;CalendarBean calendar;JLabel showMessage=new JLabel("",JLabel.CENTER);int year=2011,month=2;public CalendarFrame(){JPanel pCenter=new JPanel();//【代码1】//将pCenter的布局设置为7行7列的GridLayout布局.for(int i=0;i<7;i++){titleName[i]=new JButton(name[i]);titleName[i].setBorder(new SoftBevelBorder(BevelBorder.RAISED));//【代码2】//pCenter中添加组件titleName[i]}for(int i=0;i<42;i++){labelDay[i]=new JLabel("",JLabel.CENTER);labelDay[i].setBorder(new SoftBevelBorder(BevelBorder.LOWERED));//【代码3】//pCenter中添加组件labelDay[i]}calendar=new CalendarBean();nextMonth=new JButton("下月");previousMonth=new JButton("上月");nextMonth.addActionListener(this);previousMonth.addActionListener(this);JPanel pNoth=new JPanel(),pSouth=new JPanel();pNoth.add(previousMonth);pNoth.add(nextMonth);pSouth.add(showMessage);//【代码4】//将窗口pCenter添加到中央区域//【代码5】//将窗口pNoth添加到北面区域//【代码6】//将窗口pSouth添加到南面区域setYearAndMonth(year,month);setDefaultCloseOperation(DISPOSE_ON_CLOSE);}public void setYearAndMonth(int y,int m){calendar.setYear(y);calendar.setMonth(m);String day[]= calendar.getCalendar();for(int i=0;i<42;i++){labelDay[i].setText(day[i]);}showMessage.setText("日历:"+calendar.getYear()+"年"+calendar.month+"月"); }public void actionPerformed(ActionEvent e) {if(e.getSource()==nextMonth){month=month+1;if(month>12){month=1;}calendar.setMonth(month);String day[]=calendar.getCalendar();for(int i=0;i<42;i++){labelDay[i].setText(day[i]);}}else if(e.getSource()==previousMonth){month=month-1;if(month<1){month=12;}calendar.setMonth(month);String day[]=calendar.getCalendar();for(int i=0;i<42;i++){labelDay[i].setText(day[i]);}}showMessage.setText("日历:"+calendar.getYear()+"年"+calendar.month+"月");}}CalendarMainClass.javapublic class CalendarMainClass {public static void main(String[] args) {CalendarFrame frame=new CalendarFrame();frame.setBounds(100,100,360,300);frame.setVisible(true);frame.setYearAndMonth(2013,5);}}实验3 华容道模板代码MainClassHRR.javapublic class MainClassHRR {public static void main(String[] args) {{ Hua_Rong_Road HRR=new Hua_Rong_Road();}}}Person.javaimport java.awt.event.*;import java.awt.*;import javax.swing.*;public class Person extends JButton implements FocusListener {int number;Color c=new Color(255,245,170);Font font=new Font("宋体",Font.BOLD,12);Person(int number,String s){ super(s);setBackground(c);setFont(font);this.number=number;c=getBackground();addFocusListener(this);}public void focusGained(FocusEvent e){ setBackground(Color.red);}public void focusLost(FocusEvent e){ setBackground(c);}}Hua_Rong_Road.javaimport java.awt.event.*;import java.awt.*;import javax.swing.*;public class Hua_Rong_Road extends JFrame implements MouseListener,KeyListener, ActionListener {Person person[]=new Person[10];JButton left,right,above,below;JButton restart=new JButton("重新开始");public Hua_Rong_Road(){ init();setBounds(100,100,320,360);setVisible(true);setDefaultCloseOperation(DISPOSE_ON_CLOSE);validate();}public void init(){ setLayout(null);add(restart);restart.setBounds(100,320,120,25);restart.addActionListener(this);String name[]={"曹操","关羽","张","刘","周","黄","兵","兵","兵","兵"};for(int k=0;k<name.length;k++){ person[k]=new Person(k,name[k]);person[k].addMouseListener(this);person[k].addKeyListener(this);add(person[k]);}person[0].setBounds(104,54,100,100);person[1].setBounds(104,154,100,50);person[2].setBounds(54, 154,50,100);person[3].setBounds(204,154,50,100);person[4].setBounds(54, 54, 50,100);person[5].setBounds(204, 54, 50,100);person[6].setBounds(54,254,50,50);person[7].setBounds(204,254,50,50);person[8].setBounds(104,204,50,50);person[9].setBounds(154,204,50,50);person[9].requestFocus();left=new JButton(); right=new JButton();above=new JButton(); below=new JButton();add(left); add(right);add(above); add(below);left.setBounds(49,49,5,260);right.setBounds(254,49,5,260);above.setBounds(49,49,210,5);below.setBounds(49,304,210,5);validate();}public void keyTyped(KeyEvent e){}public void keyReleased(KeyEvent e){}public void keyPressed(KeyEvent e){ Person man=(Person)e.getSource();if(e.getKeyCode()==KeyEvent.VK_DOWN){ go(man,below);}if(e.getKeyCode()==KeyEvent.VK_UP){ go(man,above);}if(e.getKeyCode()==KeyEvent.VK_LEFT){ go(man,left);}if(e.getKeyCode()==KeyEvent.VK_RIGHT){ go(man,right);}}public void mousePressed(MouseEvent e){ Person man=(Person)e.getSource();int x=-1,y=-1;x=e.getX();y=e.getY();int w=man.getBounds().width;int h=man.getBounds().height;if(y>h/2){ go(man,below);}if(y<h/2){ go(man,above);}if(x<w/2){ go(man,left);}if(x>w/2){ go(man,right);}}public void mouseReleased(MouseEvent e) {}public void mouseEntered(MouseEvent e) {}public void mouseExited(MouseEvent e) {}public void mouseClicked(MouseEvent e) {}public void go(Person man,JButton direction){ boolean move=true;Rectangle manRect=man.getBounds();int x=man.getBounds().x;int y=man.getBounds().y;if(direction==below)y=y+50;else if(direction==above)y=y-50;else if(direction==left)x=x-50;else if(direction==right)x=x+50;manRect.setLocation(x,y);Rectangle directionRect=direction.getBounds();for(int k=0;k<10;k++){ Rectangle personRect=person[k].getBounds();if((manRect.intersects(personRect))&&(man.number!=k)){ move=false;}}if(manRect.intersects(directionRect)){ move=false;}if(move==true){ man.setLocation(x,y);}}public void actionPerformed(ActionEvent e){ dispose();new Hua_Rong_Road();}}实验4 字体对话框模板代码FontFamilyNames.javaimport java.awt.GraphicsEnvironment;public class FontFamilyNames{ String allFontName[];public String [] getFontName(){ GraphicsEnvironment ge=GraphicsEnvironment.getLocalGraphicsEnvironment();allFontName=ge.getAvailableFontFamilyNames();return allFontName;}}FontDialog.javaimport java.awt.event.*;import java.awt.*;import javax.swing.*;public class FontDialog extends JDialog implements ItemListener,ActionListener{ FontFamilyNames fontFamilyNames;int fontSize=38;String fontName;JComboBox fontSizeList,fontNameList;JLabel label;Font font;JButton yes,cancel;static int YES=1,NO=0;int state=-1;FontDialog(Frame f){super(f);setTitle("字体");font=new Font("宋体",Font.PLAIN,12);fontFamilyNames=new FontFamilyNames();//【代码1】//当前对话框调用setModal(boolean b)设置为有模式yes=new JButton("Yes");cancel=new JButton("cancel");yes.addActionListener(this);cancel.addActionListener(this);label=new JLabel("hello,奥运",JLabel.CENTER);fontSizeList=new JComboBox();fontNameList=new JComboBox();String name[]=fontFamilyNames.getFontName();fontNameList.addItem("字体");for(int k=0;k<name.length;k++){ fontNameList.addItem(name[k]);}fontSizeList.addItem("大小");for(int k=8;k<72;k=k+2){ fontSizeList.addItem(new Integer(k));}fontNameList.addItemListener(this);fontSizeList.addItemListener(this);JPanel pNorth=new JPanel();pNorth.add(fontNameList);pNorth.add(fontSizeList);add(pNorth,BorderLayout.NORTH);add(label,BorderLayout.CENTER);JPanel pSouth=new JPanel();pSouth.add(yes);pSouth.add(cancel);add(pSouth,BorderLayout.SOUTH);setBounds(100,100,280,170);setDefaultCloseOperation(DISPOSE_ON_CLOSE);validate();}public void itemStateChanged(ItemEvent e){if(e.getSource()==fontNameList){fontName=(String)fontNameList.getSelectedItem();font=new Font(fontName,Font.PLAIN,fontSize); }else if(e.getSource()==fontSizeList){Integer m=(Integer)fontSizeList.getSelectedItem();fontSize=m.intValue();font=new Font(fontName,Font.PLAIN,fontSize); }label.setFont(font);label.repaint();validate();}public void actionPerformed(ActionEvent e){ if(e.getSource()==yes){ state=YES;//【代码2】//对话框设置为不可见}else if(e.getSource()==cancel){ state=NO;//【代码3】//对话框设置为不可见}}public int getState(){ return state;}public Font getFont(){ return font;}}FrameHaveDialog.javaimport java.awt.event.*;import java.awt.*;import javax.swing.*;public class FrameHaveDialog extends JFrame implements ActionListener{ JTextArea text;JButton buttonFont;FrameHaveDialog(){ buttonFont=new JButton("设置字体");text=new JTextArea("Java面向对象程序设计");buttonFont.addActionListener(this);add(buttonFont,BorderLayout.NORTH);add(text);setBounds(60,60,300,300);setVisible(true);validate();setDefaultCloseOperation(DISPOSE_ON_CLOSE);}public void actionPerformed(ActionEvent e){ if(e.getSource()==buttonFont){ FontDialog dialog=new FontDialog(this);//【代码4】//创建对话框dialog.setVisible(true);//【代码5】//对话框设置为可见//【代码6】//对话框设置设置标题为“字体对话框”if(dialog.getState()==FontDialog.YES){ text.setFont(dialog.getFont());text.repaint();}if(dialog.getState()==FontDialog.NO){ text.repaint();}}}}FontDialogMainClass.javapublic class FontDialogMainClass{ public static void main(String args[]){ FrameHaveDialog win=new FrameHaveDialog();}}实验5 计算平方根模板代码InputNumber.javaimport javax.swing.*;public class InputNumber {public static void main(String[] args) {double result=0;boolean inputComplete=false;while(inputComplete==false){String str=//【代码1】//弹出输入对话框try{result=Double.parseDouble(str);if(result>=0){inputComplete=true;}}catch(NumberFormatException exp){//【代码2】//弹出消息对话框inputComplete=false;}}double sqrtRoot=Math.sqrt(result);System.out.println(result+"平方根："+sqrtRoot);}}实验6 简易计算器模板代码UserFrm.javaimport java.awt.*;import java.awt.event.*;public class UserFrm extends Frame implements ActionListener {private MenuBar jmb = new MenuBar();private MenuItem item = new MenuItem("退出");public static Font font = new Font("宋体", 1, 16);public UserFrm(String title) throws HeadlessException {super(title);//【代码1】//设置该Frame位置与大小，具体值为(100, 100, 250, 200)setVisible(true);Menu menu = new Menu("文件");menu.add(item);item.setFont(font);Panel panelNorth = new Panel();//【代码2】//把panelNorth加入窗体的北区add(new Caculator(), BorderLayout.CENTER);item.addActionListener(this);jmb.add(menu);jmb.setFont(font);setMenuBar(jmb);//【代码3】//用匿名类的方式设计完成窗体关闭的监听和实现关闭的方法validate();}public void actionPerformed(ActionEvent e) {Object o = e.getSource();if (o == item)System.exit(1);}public static void main(String[] args) {new UserFrm("用户界面");}}class Caculator extends Panel implements ActionListener, KeyListener {private TextField tf = new TextField("");private float x = 0;private float y = 0;private int code = 0;private boolean enable;private boolean first;private String str = "";public Caculator() {setLayout(new BorderLayout());enable = true;first = true;add(tf, BorderLayout.NORTH);Panel panel = new Panel();//【代码4】//把panel设置为GridLayout布局Button btn = null;//【代码5】//创建btn并把标题设为1;把btn加入panel中;设置该按钮的字体格式为UserFrm.font;设置输入确认监听;设置键盘输入监听//【代码6】//创建btn并把标题设为2;把btn加入panel中;设置该按钮的字体格式为UserFrm.font;设置输入确认监听;设置键盘输入监听//【代码7】//创建btn并把标题设为3;把btn加入panel中;设置该按钮的字体格式为UserFrm.font;设置输入确认监听;设置键盘输入监听//【代码8】//创建btn并把标题设为+;把btn加入panel中;设置该按钮的字体格式为UserFrm.font;设置输入确认监听;设置键盘输入监听//【代码9】//创建btn并把标题设为4;把btn加入panel中;设置该按钮的字体格式为UserFrm.font;设置输入确认监听;设置键盘输入监听//【代码10】//创建btn并把标题设为5;把btn加入panel中;设置该按钮的字体格式为UserFrm.font;设置输入确认监听;设置键盘输入监听//【代码11】//创建btn并把标题设为6;把btn加入panel中;设置该按钮的字体格式为UserFrm.font;设置输入确认监听;设置键盘输入监听//【代码12】//创建btn并把标题设为-;把btn加入panel中;设置该按钮的字体格式为UserFrm.font;设置输入确认监听;设置键盘输入监听//【代码13】//创建btn并把标题设为7;把btn加入panel中;设置该按钮的字体格式为UserFrm.font;设置输入确认监听;设置键盘输入监听//【代码14】//创建btn并把标题设为8;把btn加入panel中;设置该按钮的字体格式为UserFrm.font;设置输入确认监听;设置键盘输入监听///【代码15】//创建btn并把标题设为9;把btn加入panel中;设置该按钮的字体格式为UserFrm.font;设置输入确认监听;设置键盘输入监听//【代码16】//创建btn并把标题设为*;把btn加入panel中;设置该按钮的字体格式为UserFrm.font;设置输入确认监听;设置键盘输入监听//【代码17】//创建btn并把标题设为0;把btn加入panel中;设置该按钮的字体格式为UserFrm.font;设置输入确认监听;设置键盘输入监听//【代码18】//创建btn并把标题设为.;把btn加入panel中;设置该按钮的字体格式为UserFrm.font;设置输入确认监听;设置键盘输入监听//【代码19】//创建btn并把标题设为/;把btn加入panel中;设置该按钮的字体格式为UserFrm.font;设置输入确认监听;设置键盘输入监听btn = new Button("=");panel.add(btn);btn.setFont(UserFrm.font);btn.addActionListener(this);btn.addKeyListener(this);//【代码20】//把panel加入Caculator的中部区域中}public void actionPerformed(ActionEvent e) {if (e.getActionCommand() == "+") {//【代码21】//把文本框里的数字转成浮点型，赋给xcode = 0;this.tf.setText("");}if (e.getActionCommand() == "-") {//【代码21】//把文本框里的数字转成浮点型，赋给xcode = 1;this.tf.setText("");}if (e.getActionCommand() == "*") {//【代码21】//把文本框里的数字转成浮点型，赋给xcode = 2;this.tf.setText("");}if (e.getActionCommand() == "/") {x = Float.parseFloat(tf.getText());code = 3;this.tf.setText("");}if (e.getActionCommand() != "+" && e.getActionCommand() != "-"&& e.getActionCommand() != "*" && e.getActionCommand() != "/"&& e.getActionCommand() != "=") {if (enable) {if (first) {tf.setText(e.getActionCommand());first = false;} else {tf.setText(tf.getText() + e.getActionCommand());}}else {tf.setText(e.getActionCommand());enable = true;}}if (e.getActionCommand() == "=") {switch (code) {case 0://【代码22】//完成两个数的加法运算tf.setText(Float.toString(y));enable = false;break;case 1://【代码23】//完成两个数的减法运算tf.setText(Float.toString(y));enable = false;break;case 2://【代码24】//完成两个数的乘法运算tf.setText(Float.toString(y));enable = false;break;case 3://【代码25】//完成两个数的除法运算tf.setText(Float.toString(y));enable = false;break;}}}public void keyPressed(KeyEvent e) {if (e.getKeyChar() == '+') {x = Float.parseFloat(tf.getText());code = 0;this.tf.setText("");}if (e.getKeyChar() == '-') {x = Float.parseFloat(tf.getText());code = 1;this.tf.setText("");}if (e.getKeyChar() == '*') {x = Float.parseFloat(tf.getText());code = 2;this.tf.setText("");}if (e.getKeyChar() == '/') {x = Float.parseFloat(tf.getText());code = 3;this.tf.setText("");}if (【代码26】) {//判断用键盘输入的数字是否为0-9以及.号，其中的一个。