达拉草201771010105《面向对象程序设计（java）》第十八周学习总结
实验十八 总复习
实验时间 2018-12-30
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。
package masn; import java.awt.EventQueue; import javax.swing.JFrame; public class Main { public static void main(String[] args) { EventQueue.invokeLater(() -> { DemoJFrame page = new DemoJFrame(); }); } }
package masn; 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(); Dimension sSize = tkit.getScreenSize(); 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); } }
package masn; import java.awt.Dimension; import java.awt.FlowLayout; import java.awt.GridLayout; import javax.swing.BorderFactory; import javax.swing.ButtonGroup; 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 Male; private JRadioButton Female; private JCheckBox read; private JCheckBox sing; private JCheckBox dance; public DemoJFrame() { this.setSize(800, 400); this.setVisible(true); this.setTitle("Students Detail"); this.setDefaultCloseOperation(EXIT_ON_CLOSE); WinCenter.center(this); jPanel1 = new JPanel(); setJPanel1(jPanel1); jPanel2 = new JPanel(); setJPanel2(jPanel2); jPanel3 = new JPanel(); setJPanel3(jPanel3); jPanel4 = new JPanel(); setJPanel4(jPanel4); FlowLayout flowLayout = new FlowLayout(); this.setLayout(flowLayout); this.add(jPanel1); this.add(jPanel2); this.add(jPanel3); this.add(jPanel4); } /*设置面板一 */ private void setJPanel1(JPanel jPanel) { jPanel.setPreferredSize(new Dimension(700, 45)); jPanel.setLayout(new GridLayout(1, 4)); JLabel name = new JLabel("name:"); name.setSize(80, 30); fieldname = new JTextField(""); fieldname.setSize(80, 20); JLabel study = new JLabel("qualification:"); comboBox = new JComboBox(); comboBox.addItem("初中"); comboBox.addItem("高中"); comboBox.addItem("本科"); 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)); jPanel.setLayout(new GridLayout(1, 4)); JLabel name = new JLabel("address:"); fieldadress = new JTextField(); fieldadress.setPreferredSize(new Dimension(100, 50)); JLabel study = new JLabel("hobby:"); JPanel selectBox = new JPanel(); selectBox.setBorder(BorderFactory.createTitledBorder("")); selectBox.setLayout(new GridLayout(3, 1)); read = new JCheckBox("reading"); sing = new JCheckBox("singing"); dance = new JCheckBox("danceing"); selectBox.add(read); selectBox.add(sing); selectBox.add(dance); 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("性别:"); JPanel selectBox = new JPanel(); selectBox.setBorder(BorderFactory.createTitledBorder("")); selectBox.setLayout(new GridLayout(2, 1)); bg = new ButtonGroup(); Male = new JRadioButton("male"); Female = new JRadioButton("female"); bg.add(Male ); bg.add(Female); selectBox.add(Male); selectBox.add(Female); jPanel.add(sex); jPanel.add(selectBox); } /*设置面板四*/ private void setJPanel4(JPanel jPanel) { jPanel.setPreferredSize(new Dimension(700, 150)); FlowLayout flowLayout = new FlowLayout(FlowLayout.CENTER, 50, 10); jPanel.setLayout(flowLayout); jPanel.setLayout(flowLayout); JButton sublite = new JButton("提交"); JButton reset = new JButton("重置"); sublite.addActionListener((e) -> valiData()); reset.addActionListener((e) -> Reset()); jPanel.add(sublite); jPanel.add(reset); } /*提交数据*/ private void valiData() { 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 (read.isSelected()) { hobbystring+="reading "; } if (sing.isSelected()) { hobbystring+="singing "; } if (dance.isSelected()) { hobbystring+="dancing "; } System.out.println(address); if (Male.isSelected()) { System.out.println("male"); } if (Female.isSelected()) { System.out.println("female"); } System.out.println(hobbystring); } /*重置*/ private void Reset() { fieldadress.setText(null); fieldname.setText(null); comboBox.setSelectedIndex(0); read.setSelected(false); sing.setSelected(false); dance.setSelected(false); bg.clearSelection(); } }
运行结果如下：
练习2：采用GUI界面设计以下程序：
l 编制一个程序，将身份证号.txt 中的信息读入到内存中；
l 按姓名字典序输出人员信息；
l 查询最大年龄的人员信息；
l 查询最小年龄人员信息；
l 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；
l 查询人员中是否有你的同乡。
l 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 身份证; import java.io.BufferedReader; import java.io.FileNotFoundException; import java.io.FileReader; import java.io.IOException; import java.util.ArrayList; //import java.util.Arrays; import java.util.Collections; import java.util.Scanner; import java.util.TimerTask; //import java.awt.*; import javax.swing.*; import java.awt.event.*; public class Main extends JFrame { private static ArrayList studentlist; private static ArrayListlist; private JPanel buttonPanel; // private JPanel panel; Scanner scanner = new Scanner(System.in); public Main() { studentlist = new ArrayList<>(); // Timer timer=new Timer(); JTextArea jt = new JTextArea(); jt.setBounds(520, 100, 800, 600); buttonPanel = new JPanel(); JButton jButton = new JButton("1.字典排序："); JButton jButton1 = new JButton("2.年龄最大和年龄最小："); JLabel lab = new JLabel("3.猜猜你的老乡："); JTextField jt1 = new JTextField(); JLabel lab1 = new JLabel("4.找找同龄人（年龄相近）："); JTextField jt2 = new JTextField(); JLabel lab2 = new JLabel("5.输入你的身份证号码："); JTextField jt3 = new JTextField(); JButton jButton2 = new JButton("6.退出"); buttonPanel. setLayout(null); jButton.setBounds(50, 160, 100, 30); jButton1.setBounds(50, 220, 160, 30); lab2.setBounds(50, 400, 100, 30); lab.setBounds(50, 280, 150, 30); jt1.setBounds(150, 280, 100, 30); lab1.setBounds(50, 340, 150, 30); jt2.setBounds(200, 340, 160, 30); jt3.setBounds(200, 400, 160, 30); jButton2.setBounds(50, 460, 60, 30); 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); buttonPanel.add(jt); try { BufferedReader in = new BufferedReader(new FileReader("身份证号.txt")); String temp = null; while ((temp = in.readLine()) != null) { Scanner linescanner = new Scanner(temp); linescanner.useDelimiter(" "); String name = linescanner.next(); String number = linescanner.next(); String sex = linescanner.next(); String age = linescanner.next(); String province = linescanner.nextLine(); Student student = new Student(); student.setName(name); student.setnumber(number); student.setsex(sex); int a = Integer.parseInt(age); student.setage(a); student.setprovince(province); studentlist.add(student); } } catch (FileNotFoundException e) { System.out.println("学生信息文件找不到"); e.printStackTrace(); } catch (IOException e) { System.out.println("学生信息文件读取错误"); e.printStackTrace(); } jButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { jt.setText(null); Collections.sort(studentlist); jt.setText(studentlist.toString()); // jt.append(studentlist.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 < studentlist.size(); i++) { j = ((Student) studentlist.get(i)).getage(); if (j > max) { max = j; k1 = i; } if (j < min) { min = j; k2 = i; } } jt.setText("年龄最大：" + studentlist.get(k1) + "年龄最小：" + studentlist.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 < studentlist.size(); i++) { if (((Student) studentlist.get(i)).getprovince().substring(1, 4).equals(place)) { text+="\n"+studentlist.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 - ((Student) studentlist.get(near)).getage(); jt.setText("年龄相近：" + studentlist.get(near)); } }); jt3.addKeyListener(new KeyAdapter() { public void keyTyped(KeyEvent e) { list = new ArrayList<>(); Collections.sort(studentlist); String key = jt3.getText(); for (int i = 1; i < studentlist.size(); i++) { if (((Student) studentlist.get(i)).getnumber().contains(key)) { list.add((Student) studentlist.get(i)); jt.setText("你可能是：\n" + list); } } } }); } public static int agenear(int age) { int min = 53, value = 0, k = 0; for (int i = 0; i < studentlist.size(); i++) { value = ((Student) studentlist.get(i)).getage() - age; if (value < 0) value = -value; if (value < min) { min = value; k = i; } } return k; } }
package 身份证; import java.awt.*; import javax.swing.*; /** * @version 1.34 2015-06-12 * @author Cay Horstmann */ public class demo1 { public static void main(String[] args) { EventQueue.invokeLater(() -> { JFrame frame = new Main(); frame.setTitle("查询"); frame.setBounds(500, 50, 500, 500); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); }); } }
package 身份证; public class Student implements Comparable{ private String name; private String number ; private String sex ; private int age; private String province; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getnumber() { return number; } public void setnumber(String number) { this.number = number; } 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 getprovince() { return province; } public void setprovince(String province) { this.province=province ; } public int compareTo(Student o) { return this.name.compareTo(o.getName()); } public String toString() { return name+"\t"+sex+"\t"+age+"\t"+number+"\t"+province+"\n"; } }
运行结果如下：
练习3：采用GUI界面设计以下程序
l 编写一个计算器类，可以完成加、减、乘、除的操作
l 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；
l 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 shiwuzhou; import java.awt.Dimension; import java.awt.EventQueue; import java.awt.Toolkit; import javax.swing.JFrame; public class New { public static void main (String args[]) { Toolkit t=Toolkit.getDefaultToolkit(); Dimension s=t.getScreenSize(); EventQueue.invokeLater(() -> { JFrame frame = new Demo(); frame.setBounds(0, 0,(int)s.getWidth()/2,(int)s.getHeight()/2); frame.setTitle("第七组"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); }); } }
package shiwuzhou; 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 Demo 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,sum = 0; private PrintWriter out = null; private JTextArea text,text1; private int counter; public Demo() { 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("生成题目"); Button.setBounds(50,150,150,50); Button.setFont(new Font("Courier",Font.PLAIN,20)); Button.addActionListener(new Action()); JButton Button2 = new JButton("确定答案"); 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) { // TODO Auto-generated catch block e.printStackTrace(); } for(int counter=0;counter<10;counter++) { out.println(c[counter]+c1[counter]); } out.println("成绩"+sum); out.close(); } } }
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。
总结：
学习内容：
1.Java语言特点与开发环境配置（第1章、第2章）
2.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）
3.类、类间关系、类图
4.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）
5.Java异常处理编程模型
6. Java GUI编程模型
7.Java并发程序设计（第14章）
8.Java应用程序部署（第13章）
学习方法：
课堂上老师的讲授以及实验课的实验、课后老师布置的作业、课后自己做的题以及MOOC平台上的视频。
学习心得：
这一学期里我学习了Java这门编程语言，通过这一学期的学习我认识到自己的一些不足，所以感觉自己需要学会将所学的知识与实践结合起来，需要多实践、多练习。这一学期我们是一种老师课堂授课，助教课下和实验课解答疑惑以及演示实验的学习模式，这是我第一次用这种方式上课，所以觉得这种上课方式很新颖很好，因为如果我们遇到不懂的东西除了可以问同学以外还可以问助教，尤其是助教演示实验可以让我们学到很多。建议是：实验提交的时间可以延长一下因为有时候难度比较大的实验，短时间内做不出来。