東文財201771010106《面向物件程式設計（java）》.18
阿新 • • 發佈：2018-12-30
1、實驗目的與要求
(1) 綜合掌握java基本程式結構；
(2) 綜合掌握java面向物件程式設計特點；
(3) 綜合掌握java GUI 程式設計結構；
(4) 綜合掌握java多執行緒程式設計模型；
(5) 綜合程式設計練習。
2、實驗內容和步驟
任務1：填寫課程課後調查問卷，網址：https://www.wjx.cn/jq/33108969.aspx。
任務2：綜合程式設計練習
練習1：設計一個使用者資訊採集程式，要求如下：
（1） 使用者資訊輸入介面如下圖所示:
（1）使用者點選提交按鈕時，使用者輸入資訊顯示控制檯介面；
（2）使用者點選重置按鈕後，清空使用者已輸入資訊；
（3）點選視窗關閉，程式退出。
import java.awt.EventQueue; import javax.swing.JFrame; public class Mian { public static void main(String[] args) { EventQueue.invokeLater(() -> { DemoJFrame page = new DemoJFrame(); }); } }
importjava.awt.Dimension; import java.awt.Toolkit; import java.awt.Window; public class WinCenter { public static void center(Window win){ Toolkit tkit = Toolkit.getDefaultToolkit();//獲取預設工具包 Dimension sSize = tkit.getScreenSize();//獲取螢幕的大小 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);//將元件移到新的位置 } }
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() { // 設定視窗大小 this.setSize(800, 400); // 設定可見性 this.setVisible(true); // 設定標題 this.setTitle("Student Detail"); // 設定關閉操作 this.setDefaultCloseOperation(EXIT_ON_CLOSE); // 設定視窗居中 WinCenter.center(this); // 建立四個面板物件 jPanel1 = new JPanel(); setJPanel1(jPanel1); jPanel2 = new JPanel(); setJPanel2(jPanel2); jPanel3 = new JPanel(); setJPanel3(jPanel3); jPanel4 = new JPanel(); setJPanel4(jPanel4); // 設定容器為流式佈局 FlowLayout flowLayout = new FlowLayout(); this.setLayout(flowLayout); // 將四個面板新增到容器中 this.add(jPanel1); this.add(jPanel2); this.add(jPanel3); this.add(jPanel4); } /* * 設定面一 */ private void setJPanel1(JPanel jPanel) { jPanel.setPreferredSize(new Dimension(700, 45));//設定此元件的首選大小 // 給面板的佈局設定為網格佈局 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); } /* * 設定面板二 */ private void setJPanel2(JPanel jPanel) { jPanel.setPreferredSize(new Dimension(700, 50)); // 給面板的佈局設定為網格佈局 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); } /* * 設定面板三 */ 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); } /* * 設定面板四 */ private void setJPanel4(JPanel jPanel) { // TODO 自動生成的方法存根 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); } /* * 提交資料 */ private void valiData() { // 拿到資料 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(); } }
實驗結果：
練習2：採用GUI介面設計以下程式：
編制一個程式，將身份證號.txt 中的資訊讀入到記憶體中；
按姓名字典序輸出人員資訊；
查詢最大年齡的人員資訊；
查詢最小年齡人員資訊；
輸入你的年齡，查詢身份證號.txt中年齡與你最近人的姓名、身份證號、年齡、性別和出生地；
查詢人員中是否有你的同鄉。
輸入身份證資訊，查詢所提供身份證號的人員資訊，要求輸入一個身份證數字時，查詢介面就顯示滿足查詢條件的查詢結果，且隨著輸入的數字的增多，查詢匹配的範圍逐漸縮小。
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("身份證"); 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/身份證號.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("資訊檔案找不到"); e.printStackTrace(); } catch (IOException e) { System.out.println("資訊檔案讀取錯誤"); 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("按姓名字典序輸出人員資訊"); JButton jButton1 = new JButton("查詢年齡最大和年齡最小的人員"); JLabel lab = new JLabel("查詢是否有你的老鄉"); JTextField jt1 = new JTextField(); JLabel lab1 = new JLabel("查詢年齡與你相近的人："); JTextField jt2 = new JTextField(); JLabel lab2 = new JLabel("輸入你的身份證號碼："); 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("年齡最大：" + citizenlist.get(k1) + "年齡最小：" + 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("老鄉：" + 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("年齡相近：" + 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"; } }
實驗結果：
按字典序輸出：
查詢最大和最小年齡：
查詢同鄉：
找年齡相近的人：
練習3：採用GUI介面設計以下程式
編寫一個計算器類，可以完成加、減、乘、除的操作
利用計算機類，設計一個小學生100以內數的四則運算練習程式，由計算機隨機產生10道加減乘除練習題，學生輸入答案，由程式檢查答案是否正確，每道題正確計10分，錯誤不計分，10道題測試結束後給出測試總分；
將程式中測試練習題及學生答題結果輸出到檔案，檔名為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("計算器"); 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("生成練習題"); Button.setBounds(50, 150, 150, 50); Button.setFont(new Font("Courier", Font.PLAIN, 20)); Button.addActionListener(new Action()); JButton Button2 = new JButton("檢查答案"); Button2.setBounds(300, 150, 150, 50); Button2.setFont(new Font("Courier", Font.PLAIN, 20)); Button2.addActionListener(new Action1()); JButton Button3 = new JButton("讀出檔案"); 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("成績" + sum); out.close(); } } }
實驗結果：
任務3：本學期課程已結束，請彙總《面向物件程式設計課程學習進度條》的資料，統計個人專業能力提升的資料。並從學習內容、學習方法、學習心得幾個方面進行課程學習總結，也希望你對課程的不足提出建議和意見。
學習內容：
Java語言特點與開發環境配置（第1章、第2章）
Java基本程式結構（第3章）
Java面向物件程式結構（第4章、第5章、第6章）
類、類間關係、類圖
Java JDK預定義類/介面及其API（String-第3章、 Arrays-第3章、Files-第3章62頁、LocalDate-第4章、 Object-第5章、物件包裝器-第5章、Comparator-第6章、 異常類-第7章、ArrayList-第5+8章、第9章、第10-12章、 第14章）
Java異常處理程式設計模型
Java GUI程式設計模型
Java併發程式設計（第14章）
Java應用程式部署（第13章）
學習方法：
老師講授知識、自主學習
(1)理論課：課前自主學習，老師總結知識，解除疑惑
（2）實驗課：通過閱讀並執行示例程式學習。和理論知識結合起來作興應當更改。課後完成老師不知道實驗作業
（3）通過老師提供分享的資料自主學習，遇到的問題找老師或助教學長解決。
實驗總結：
經過了一學期的學習，從一開始對Java一無所知到現在可以自己編寫一些簡單的程式，我還有一些進步的，儘管進步不是很明顯，但是我也在努力，相信我會在後來的生活中會有更多的進步，感謝老師一學期來對惡我們的教導，也感謝同學們，希望大家在寒假裡過的開心，過個快樂的寒假。