JAVA综合图形界面程序设计

1、实验报告（2013 / 2014 学年 第 二 学期）课 程 名 称Java语言程序设计实 验 名 称综合图形界面程序设计实 验 时 间2014年5月5日指 导 单 位计算机学院 软件教学中心指 导 教 师薛景学 生 姓 名 周媛班 级 学 号12001108学 院（系）计算机学院专 业计算机科学与技术（信息安全）实验名称综合图形界面程序设计指导教师薛景实验类型上机实验学时2实验时间2014-5-5一、实验目的1.学习使用Java Swing设计GUI界面2.学习Java的事件监听机制的基本原理3.学习监听器处理Java中的事件二、实验环境1.每位同学配备实验计算机一台2.安装JDK和Ecli

2、pse三、实验内容1、编写一个算数测试小软件，用来训练小学生的算数能力。程序有3个类组成，其中Teacher对象充当监视器，负责给出算术题目，并判断回答者的答案是否正确；ComputerFrame对象负责为算数题目提供视图，比如用户可以通过ComputerFrame对象提供的GUI界面看到题目，并通过该GUI界面给出题目的答案；MainClass是软件的主类。（请在下方空白处填写本程序的全部程序代码及软件界面截图）public class Mainclass public static void main(String args) ComputerFrame frame; frame=new

3、ComputerFrame(); frame.setTitle("算术测试");Bounds(100,100,650,180); import 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,

4、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(&quo

5、t;儿童级别"); grade1.addActionListener(new ActionListener()publicvoid actionPerformed(ActionEvent e)teacherZhang.setMaxInteger(10); ); grade2.addActionListener(new ActionListener() public void actionPerformed(ActionEvent e)teacherZhang.setMaxInteger(50); ); choiceGrade.add(grade1); choiceGrade.add(

6、grade2); menubar.add(choiceGrade); setJMenuBar(menubar); textOne=new JTextField(5);/创建textOne，其可见字符长是5 textTwo=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&qu

7、ot;); getProblem=new JButton("获取题目"); giveAnswer=new JButton("确认答案"); add(getProblem); add(textOne); add(operatorLabel); add(textTwo); add(new JLabel("="); add(textResult); add(giveAnswer); add(message); textResult.requestFocus(); textOne.setEditable(false); textTwo.set

8、Editable(false); getProblem.setActionCommand("getProblem"); textResult.setActionCommand("answer"); giveAnswer.setActionCommand("answer"); teacherZhang.setJTextField(textOne,textTwo,textResult); teacherZhang.setJLabel(operatorLabel,message); getProblem.addActionListener(

9、teacherZhang); giveAnswer.addActionListener(teacherZhang); textResult.addActionListener(teacherZhang); setVisible(true); validate(); setDefaultCloseOperation(DISPOSE_ON_CLOSE); import java.util.Random;import java.awt.event.*;import javax.swing.*;public class Teacher implements ActionListener int num

10、berOne,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.ge

11、tActionCommand(); 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(""+numbe

12、rTwo);xt(operator); message.setText("请回答"); textResult.setText(null); else if(str.equals("answer") String answer=textResul.getText(); try int result=Integer.parseInt(answer); if(operator.equals("+") if(result=numberOne+numberTwo) message.setText("你回答正确"); else

13、 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) textOn

14、e=t0; textTwo=t1; textResult=t2; public void setJLabel(JLabel .label) operatorLabel=label0; message=label1; 2、编写一个简单的计算器软件，实现简单的四则运算。（请在下方空白处填写本程序的全部程序代码及软件界面截图）import java.awt.*; import java.awt.event.*; import javax.swing.*; public class Calculator extends JFrame private Container container; priva

15、te GridBagLayout layout; private GridBagConstraints constraints; private JTextField displayField;/ 计算结果显示区private String lastCommand; private double result;/ 保存计算结果private boolean start;/ 判断是否为数字的开始public Calculator() super("Calculator"); container = getContentPane(); layout = new GridBagL

16、ayout(); Layout(layout); constraints = new GridBagConstraints(); start = true; result = 0; lastCommand = "=" displayField = new JTextField(20); displayField.setHorizontalAlignment(JTextField.RIGHT); constraints.gridx = 0; constraints.gridy = 0; constraints.gridwidth = 4; constraints.gridhe

17、ight = 1; constraints.fill = GridBagConstraints.BOTH; constraints.weightx = 100; constraints.weighty = 100; layout.setConstraints(displayField, constraints); container.add(displayField); ActionListener insert = new InsertAction(); ActionListener command = new CommandAction(); addButton("7"

18、, 0, 2, 1, 1, insert); addButton("8", 1, 2, 1, 1, insert); addButton("9", 2, 2, 1, 1, insert); addButton("/", 3, 2, 1, 1, command); addButton("4", 0, 3, 1, 1, insert); addButton("5", 1, 3, 1, 1, insert); addButton("6", 2, 3, 1, 1, insert);

19、addButton("*", 3, 3, 1, 1, command); addButton("1", 0, 4, 1, 1, insert); addButton("2", 1, 4, 1, 1, insert); addButton("3", 2, 4, 1, 1, insert); addButton("-", 3, 4, 1, 1, command); addButton("0", 0, 5, 1, 1, insert); addButton("."

20、;, 2, 5, 1, 1, insert); addButton("+", 3, 5, 1, 1, command); addButton("=", 0, 6, 4, 1, command); this.setResizable(false); setSize(180, 200); setVisible(true); private void addButton(String label, int row, int column, int with, int height, ActionListener listener) JButton button

21、 = new JButton(label); constraints.gridx = row; constraints.gridy = column; constraints.gridwidth = with; constraints.gridheight = height; constraints.fill = GridBagConstraints.BOTH; button.addActionListener(listener); layout.setConstraints(button, constraints); container.add(button); private class

22、InsertAction implements ActionListener public void actionPerformed(ActionEvent event) String input = event.getActionCommand(); if (start) displayField.setText(""); start = false; if (input.equals("+/-") displayField.setText(displayField.getText() + "-"); if (!input.equa

23、ls("+/-") if (input.equals("Backspace") String str = displayField.getText(); if (str.length() > 0) displayField .setText(str.substring(0, str.length() - 1); else if (input.equals("CE") | input.equals("C") displayField.setText("0"); start = true; e

24、lse displayField.setText(displayField.getText() + input); private class CommandAction implements ActionListener public void actionPerformed(ActionEvent evt) String command = evt.getActionCommand(); if (start) lastCommand = command; else calculate(Double.parseDouble(displayField.getText(); lastComman

25、d = command; start = true; public void calculate(double x) if (lastCommand.equals("+") result += x; else if (lastCommand.equals("-") result -= x; else if (lastCommand.equals("*") result *= x; else if (lastCommand.equals("/") result /= x; else if (lastCommand.e

26、quals("=") result = x; displayField.setText("" + result); public static void main(String args) Calculator calculator = new Calculator(); calculator.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 3、使用Java Swing中的各个组件，编写一个自定义的软件界面，例如：学生成绩管理系统、图书馆管理系统、人事管理系统等等（请在下方空白处填写本程序的全部程序代码及软件界面截图）import javax.swing.*;public class Program public static void main(String args) WindowBoxLayout w