东文财201771010106《面向对象程序设计（java）》.18
1、实验目的与要求
(1) 综合掌握java基本程序结构；
(2) 综合掌握java面向对象程序设计特点；
(3) 综合掌握java GUI 程序设计结构；
(4) 综合掌握java多线程编程模型；
(5) 综合编程练习。
2、实验内容和步骤
任务1：填写课程课后调查问卷，网址：https://www.wjx.cn/jq/33108969.aspx。
任务2：综合编程练习
练习1：设计一个用户信息采集程序，要求如下：
（1） 用户信息输入界面如下图所示:
（1）用户点击提交按钮时，用户输入信息显示控制台界面；
（2）用户点击重置按钮后，清空用户已输入信息；
（3）点击窗口关闭，程序退出。
import java.awt.EventQueue; import javax.swing.JFrame; public class Mian { public static void main(String[] args) { EventQueue.invokeLater(() -> { DemoJFrame page = new DemoJFrame(); }); } }
import java.awt.Dimension; import java.awt.Toolkit; import java.awt.Window; public class WinCenter { public static void center(Window win){ Toolkit tkit = Toolkit.getDefaultToolkit();//获取默认工具包 Dimension sSize = tkit.getScreenSize();//获取屏幕的大小 Dimension wSize = win.getSize(); if(wSize.height > sSize.height){ wSize.height = sSize.height; } if(wSize.width > sSize.width){ wSize.width = sSize.width; } win.setLocation((sSize.width - wSize.width)/ 2, (sSize.height - wSize.height)/ 2);//将组件移到新的位置 } }
import java.awt.Color; import java.awt.Dimension; import java.awt.FlowLayout; import java.awt.GridLayout; import java.awt.LayoutManager; import java.awt.Panel; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.BufferedReader; import java.io.File; import java.io.FileInputStream; import java.io.IOException; import java.io.InputStreamReader; import java.util.ArrayList; import java.util.Timer; import java.util.TimerTask; import javax.swing.BorderFactory; import javax.swing.ButtonGroup; import javax.swing.ButtonModel; import javax.swing.JButton; import javax.swing.JCheckBox; import javax.swing.JComboBox; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JRadioButton; import javax.swing.JTextField; public class DemoJFrame extends JFrame { private JPanel jPanel1; private JPanel jPanel2; private JPanel jPanel3; private JPanel jPanel4; private JTextField fieldname; private JComboBox comboBox; private JTextField fieldadress; private ButtonGroup bg; private JRadioButton nan; private JRadioButton nv; private JCheckBox sing; private JCheckBox dance; private JCheckBox draw; public DemoJFrame() { // 设置窗口大小 this.setSize(800, 400); // 设置可见性 this.setVisible(true); // 设置标题 this.setTitle("Student Detail"); // 设置关闭操作 this.setDefaultCloseOperation(EXIT_ON_CLOSE); // 设置窗口居中 WinCenter.center(this); // 创建四个面板对象 jPanel1 = new JPanel(); setJPanel1(jPanel1); jPanel2 = new JPanel(); setJPanel2(jPanel2); jPanel3 = new JPanel(); setJPanel3(jPanel3); jPanel4 = new JPanel(); setJPanel4(jPanel4); // 设置容器为流式布局 FlowLayout flowLayout = new FlowLayout(); this.setLayout(flowLayout); // 将四个面板添加到容器中 this.add(jPanel1); this.add(jPanel2); this.add(jPanel3); this.add(jPanel4); } /* * 设置面一 */ private void setJPanel1(JPanel jPanel) { jPanel.setPreferredSize(new Dimension(700, 45));//设置此组件的首选大小 // 给面板的布局设置为网格布局 一行4列 jPanel.setLayout(new GridLayout(1, 4)); JLabel name = new JLabel("Name:"); name.setSize(100, 50); fieldname = new JTextField(""); fieldname.setSize(80, 20); JLabel study = new JLabel("Qualification:"); comboBox = new JComboBox(); comboBox.addItem("Graduate"); comboBox.addItem("senior"); comboBox.addItem("Undergraduate"); jPanel.add(name); jPanel.add(fieldname); jPanel.add(study); jPanel.add(comboBox); } /* * 设置面板二 */ private void setJPanel2(JPanel jPanel) { jPanel.setPreferredSize(new Dimension(700, 50)); // 给面板的布局设置为网格布局 一行4列 jPanel.setLayout(new GridLayout(1, 4)); JLabel name = new JLabel("Address:"); fieldadress = new JTextField(); fieldadress.setPreferredSize(new Dimension(150, 50)); JLabel study = new JLabel("Hobby:"); JPanel selectBox = new JPanel(); selectBox.setBorder(BorderFactory.createTitledBorder("")); selectBox.setLayout(new GridLayout(3, 1)); sing = new JCheckBox("Singing"); dance = new JCheckBox("Dancing"); draw = new JCheckBox("Reading"); selectBox.add(sing); selectBox.add(dance); selectBox.add(draw); jPanel.add(name); jPanel.add(fieldadress); jPanel.add(study); jPanel.add(selectBox); } /* * 设置面板三 */ private void setJPanel3(JPanel jPanel) { jPanel.setPreferredSize(new Dimension(700, 150)); FlowLayout flowLayout = new FlowLayout(FlowLayout.LEFT); jPanel.setLayout(flowLayout); JLabel sex = new JLabel("Sex:"); JPanel selectBox = new JPanel(); selectBox.setBorder(BorderFactory.createTitledBorder("")); selectBox.setLayout(new GridLayout(2, 1)); bg = new ButtonGroup(); nan = new JRadioButton("Male"); nv = new JRadioButton("Female"); bg.add(nan); bg.add(nv); selectBox.add(nan); selectBox.add(nv); jPanel.add(sex); jPanel.add(selectBox); } /* * 设置面板四 */ private void setJPanel4(JPanel jPanel) { // TODO 自动生成的方法存根 jPanel.setPreferredSize(new Dimension(700, 150)); FlowLayout flowLayout = new FlowLayout(FlowLayout.CENTER, 50, 10); jPanel.setLayout(flowLayout); jPanel.setLayout(flowLayout); JButton sublite = new JButton("Validate"); JButton reset = new JButton("Reset"); sublite.addActionListener((e) -> valiData()); reset.addActionListener((e) -> Reset()); jPanel.add(sublite); jPanel.add(reset); } /* * 提交数据 */ private void valiData() { // 拿到数据 String name = fieldname.getText().toString().trim(); String xueli = comboBox.getSelectedItem().toString().trim(); String address = fieldadress.getText().toString().trim(); System.out.println(name); System.out.println(xueli); String hobbystring=""; if (sing.isSelected()) { hobbystring+="Singing "; } if (dance.isSelected()) { hobbystring+="Dancing "; } if (draw.isSelected()) { hobbystring+="Reading "; } System.out.println(address); if (nan.isSelected()) { System.out.println("Male"); } if (nv.isSelected()) { System.out.println("Female"); } System.out.println(hobbystring); } /* * 重置 */ private void Reset() { fieldadress.setText(null); fieldname.setText(null); comboBox.setSelectedIndex(0); sing.setSelected(false); dance.setSelected(false); draw.setSelected(false); bg.clearSelection(); } }
实验结果：
练习2：采用GUI界面设计以下程序：
编制一个程序，将身份证号.txt 中的信息读入到内存中；
按姓名字典序输出人员信息；
查询最大年龄的人员信息；
查询最小年龄人员信息；
输入你的年龄，查询身份证号.txt中年龄与你最近人的姓名、身份证号、年龄、性别和出生地；
查询人员中是否有你的同乡。
输入身份证信息，查询所提供身份证号的人员信息，要求输入一个身份证数字时，查询界面就显示满足查询条件的查询结果，且随着输入的数字的增多，查询匹配的范围逐渐缩小。
package qq; import java.awt.*; import javax.swing.*; public class ButtonTest { public static void main(String[] args) { EventQueue.invokeLater(() -> { JFrame frame = new Test(); frame.setTitle("身份证"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); }); } }
package qq; import java.io.BufferedReader; import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStreamReader; import java.util.ArrayList; import java.util.Arrays; import java.util.Scanner; import java.util.Collections; import java.awt.*; import javax.swing.*; import java.awt.event.*; public class Test extends JFrame { private static ArrayList<Citizen> citizenlist; private static ArrayList<Citizen> list; private JPanel panel; private JPanel buttonPanel; private static final int DEFAULT_WITH = 600; private static final int DEFAULT_HEIGHT = 300; public Test(){ citizenlist = new ArrayList<>(); Scanner scanner = new Scanner(System.in); File file = new File("E:/java/身份证号.txt"); try { FileInputStream fis = new FileInputStream(file); BufferedReader in = new BufferedReader(new InputStreamReader(fis)); String temp = null; while ((temp = in.readLine()) != null) { Scanner linescanner = new Scanner(temp); linescanner.useDelimiter(" "); String name = linescanner.next(); String id = linescanner.next(); String sex = linescanner.next(); String age = linescanner.next(); String birthplace = linescanner.nextLine(); Citizen citizen = new Citizen(); citizen.setName(name); citizen.setId(id); citizen.setSex(sex); int ag = Integer.parseInt(age); citizen.setage(ag); citizen.setBirthplace(birthplace); citizenlist.add(citizen); } } catch (FileNotFoundException e) { System.out.println("信息文件找不到"); e.printStackTrace(); } catch (IOException e) { System.out.println("信息文件读取错误"); e.printStackTrace(); } panel = new JPanel(); panel.setLayout(new BorderLayout()); JTextArea jt = new JTextArea(); panel.add(jt); add(panel, BorderLayout.NORTH); buttonPanel = new JPanel(); buttonPanel.setLayout(new GridLayout(1, 7)); JButton jButton = new JButton("按姓名字典序输出人员信息"); JButton jButton1 = new JButton("查询年龄最大和年龄最小的人员"); JLabel lab = new JLabel("查询是否有你的老乡"); JTextField jt1 = new JTextField(); JLabel lab1 = new JLabel("查找年龄与你相近的人："); JTextField jt2 = new JTextField(); JLabel lab2 = new JLabel("输入你的身份证号码："); JTextField jt3 = new JTextField(); JButton jButton2 = new JButton("退出"); jButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { Collections.sort(citizenlist); jt.setText(citizenlist.toString()); } }); jButton1.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { int max = 0, min = 100; int j, k1 = 0, k2 = 0; for (int i = 1; i < citizenlist.size(); i++) { j = citizenlist.get(i).getage(); if (j > max) { max = j; k1 = i; } if (j < min) { min = j; k2 = i; } } jt.setText("年龄最大：" + citizenlist.get(k1) + "年龄最小：" + citizenlist.get(k2)); } }); jButton2.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { dispose(); System.exit(0); } }); jt1.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String find = jt1.getText(); String text=""; String place = find.substring(0, 3); for (int i = 0; i < citizenlist.size(); i++) { if (citizenlist.get(i).getBirthplace().substring(1, 4).equals(place)) { text+="\n"+citizenlist.get(i); jt.setText("老乡：" + text); } } } }); jt2.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String yourage = jt2.getText(); int a = Integer.parseInt(yourage); int near = agenear(a); int value = a - citizenlist.get(near).getage(); jt.setText("年龄相近：" + citizenlist.get(near)); } }); jt3.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { list = new ArrayList<>(); Collections.sort(citizenlist); String key = jt3.getText(); for (int i = 1; i < citizenlist.size(); i++) { if (citizenlist.get(i).getId().contains(key)) { list.add(citizenlist.get(i)); jt.setText("emmm！你可能是：\n" + list); } } } }); buttonPanel.add(jButton); buttonPanel.add(jButton1); buttonPanel.add(lab); buttonPanel.add(jt1); buttonPanel.add(lab1); buttonPanel.add(jt2); buttonPanel.add(lab2); buttonPanel.add(jt3); buttonPanel.add(jButton2); add(buttonPanel, BorderLayout.SOUTH); setSize(DEFAULT_WITH, DEFAULT_HEIGHT); } public static int agenear(int age) { int min = 53, value = 0, k = 0; for (int i = 0; i < citizenlist.size(); i++) { value = citizenlist.get(i).getage() - age; if (value < 0) value = -value; if (value < min) { min = value; k = i; } } return k; } }
package qq; public class Citizen implements Comparable<Citizen> { private String name; private String id; private String sex; private int age; private String birthplace; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getId() { return id; } public void setId(String id) { this.id = id; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } public int getage() { return age; } public void setage(int age) { this.age = age; } public String getBirthplace() { return birthplace; } public void setBirthplace(String birthplace) { this.birthplace = birthplace; } public int compareTo(Citizen other) { return this.name.compareTo(other.getName()); } public String toString() { return name + "\t" + sex + "\t" + age + "\t" + id + "\t" + birthplace + "\n"; } }
实验结果：
按字典序输出：
查找最大和最小年龄：
查找同乡：
找年龄相近的人：
练习3：采用GUI界面设计以下程序
编写一个计算器类，可以完成加、减、乘、除的操作
利用计算机类，设计一个小学生100以内数的四则运算练习程序，由计算机随机产生10道加减乘除练习题，学生输入答案，由程序检查答案是否正确，每道题正确计10分，错误不计分，10道题测试结束后给出测试总分；
将程序中测试练习题及学生答题结果输出到文件，文件名为test.txt。
package counter; import java.awt.Dimension; import java.awt.EventQueue; import java.awt.Toolkit; import javax.swing.JFrame; public class Count { public static void main(String args[]) { Toolkit t = Toolkit.getDefaultToolkit(); Dimension s = t.getScreenSize(); EventQueue.invokeLater(() -> { JFrame frame = new Calculator(); frame.setBounds(0, 0, (int) s.getWidth() / 2, (int) s.getHeight() / 2); frame.setTitle("计算器"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); }); } }
package counter; import java.awt.Font; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.FileNotFoundException; import java.io.PrintWriter; import java.util.Collections; import java.util.Scanner; import javax.swing.*; import java.math.*; public class Calculator extends JFrame { private String[] c = new String[10]; private String[] c1 = new String[10]; private int[] list = new int[10]; int i = 0, i1 = 0,k=0, sum = 0; private PrintWriter out = null; private JTextArea text, text1; private int counter; public Calculator() { JPanel Panel = new JPanel(); Panel.setLayout(null); JLabel JLabel1 = new JLabel(""); JLabel1.setBounds(500, 800, 400, 30); JLabel1.setFont(new Font("Courier", Font.PLAIN, 35)); JButton Button = new JButton("生成练习题"); Button.setBounds(50, 150, 150, 50); Button.setFont(new Font("Courier", Font.PLAIN, 20)); Button.addActionListener(new Action()); JButton Button2 = new JButton("检查答案"); Button2.setBounds(300, 150, 150, 50); Button2.setFont(new Font("Courier", Font.PLAIN, 20)); Button2.addActionListener(new Action1()); JButton Button3 = new JButton("读出文件"); Button3.setBounds(500, 150, 150, 50); Button3.setFont(new Font("Courier", Font.PLAIN, 20)); Button3.addActionListener(new Action2()); text = new JTextArea(30, 80); text.setBounds(30, 50, 200, 50); text.setFont(new Font("Courier", Font.PLAIN, 35)); text1 = new JTextArea(30, 80); text1.setBounds(270, 50, 200, 50); text1.setFont(new Font("Courier", Font.PLAIN, 35)); Panel.add(text); Panel.add(text1); Panel.add(Button); Panel.add(Button2); Panel.add(Button3); Panel.add(JLabel1); add(Panel); } private class Action implements ActionListener { public void actionPerformed(ActionEvent event) { text1.setText("0"); if (i < 10) { int a = 1 + (int) (Math.random() * 99); int b = 1 + (int) (Math.random() * 99); int m = (int) Math.round(Math.random() * 3); switch (m) { case 0: while (a < b) { b = (int) Math.round(Math.random() * 100); a = (int) Math.round(Math.random() * 100); } c[i] = (i + ":" + a + "/" + b + "="); list[i] = Math.floorDiv(a, b); text.setText(i + ":" + a + "/" + b + "="); i++; break; case 1: c[i] = (i + ":" + a + "*" + b + "="); list[i] = Math.multiplyExact(a, b); text.setText(i + ":" + a + "*" + b + "="); i++; break; case 2: c[i] = (i + ":" + a + "+" + b + "="); list[i] = Math.addExact(a, b); text.setText(i + ":" + a + "+" + b + "="); i++; break; case 3: while (a <= b) { b = (int) Math.round(Math.random() * 100); a = (int) Math.round(Math.random() * 100); } c[i] = (i + ":" + a + "-" + b + "="); text.setText(i + ":" + a + "-" + b + "="); list[i] = Math.subtractExact(a, b); i++; break; } } } } private class Action1 implements ActionListener { public void actionPerformed(ActionEvent event) { if (i < 10) { text.setText(null); String daan = text1.getText().toString().trim(); int a = Integer.parseInt(daan); if (text1.getText() != "") { if (list[i1] == a) sum += 10; } c1[i1] = daan; i1++; } } } private class Action2 implements ActionListener { public void actionPerformed(ActionEvent event) { try { out = new PrintWriter("text.txt"); } catch (FileNotFoundException e) { e.printStackTrace(); } for (int counter = 0; counter < 10; counter++) { out.println(c[counter] + c1[counter]); } out.println("成绩" + sum); out.close(); } } }
实验结果：
任务3：本学期课程已结束，请汇总《面向对象程序设计课程学习进度条》的数据，统计个人专业能力提升的数据。并从学习内容、学习方法、学习心得几个方面进行课程学习总结，也希望你对课程的不足提出建议和意见。
学习内容：
Java语言特点与开发环境配置（第1章、第2章）
Java基本程序结构（第3章）
Java面向对象程序结构（第4章、第5章、第6章）
类、类间关系、类图
Java JDK预定义类/接口及其API（String-第3章、 Arrays-第3章、Files-第3章62页、LocalDate-第4章、 Object-第5章、对象包装器-第5章、Comparator-第6章、 异常类-第7章、ArrayList-第5+8章、第9章、第10-12章、 第14章）
Java异常处理编程模型
Java GUI编程模型
Java并发程序设计（第14章）
Java应用程序部署（第13章）
学习方法：
老师讲授知识、自主学习
(1)理论课：课前自主学习，老师总结知识，解除疑惑
（2）实验课：通过阅读并运行示例程序学习。和理论知识结合起来作兴应当更改。课后完成老师不知道实验作业
（3）通过老师提供分享的资料自主学习，遇到的问题找老师或助教学长解决。
实验总结：
经过了一学期的学习，从一开始对Java一无所知到现在可以自己编写一些简单的程序，我还有一些进步的，尽管进步不是很明显，但是我也在努力，相信我会在后来的生活中会有更多的进步，感谢老师一学期来对恶我们的教导，也感谢同学们，希望大家在寒假里过的开心，过个快乐的寒假。
