201771010126 王燕《面向物件程式設計（java）》第十八週學習總結
阿新 • • 發佈：2018-12-30
實驗十八 總複習
實驗時間 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 package project1;View Code2 3 import java.awt.*; 4 import java.awt.event.*; 5 import javax.swing.*; 6 import javax.swing.border.*; 7 8 public class test extends JFrame { 9 public test() { 10 JPanel panel1 = new JPanel(); 11 panel1.setPreferredSize(new Dimension(700, 45)); 12 panel1.setLayout(newGridLayout(1, 4)); 13 JLabel label1 = new JLabel("Name:"); 14 JTextField j1 = new JTextField(""); 15 JLabel label2 = new JLabel("Qualification:"); 16 JComboBox<Object> j2 = new JComboBox<>(); 17 j2.addItem("Graduate"); 18 j2.addItem("Not Graduate");19 panel1.add(label1); 20 panel1.add(j1); 21 panel1.add(label2); 22 panel1.add(j2); 23 24 JPanel panel2 = new JPanel(); 25 panel2.setPreferredSize(new Dimension(700, 50)); 26 panel2.setLayout(new GridLayout(1, 4)); 27 JLabel label3 = new JLabel("Address:"); 28 JTextArea j3 = new JTextArea(); 29 JLabel label4 = new JLabel("Hobby:"); 30 JPanel p = new JPanel(); 31 p.setLayout(new GridLayout(3, 1)); 32 p.setBorder(BorderFactory.createLineBorder(null)); 33 JCheckBox c1 = new JCheckBox("Reading"); 34 JCheckBox c2 = new JCheckBox("Singing"); 35 JCheckBox c3 = new JCheckBox("Dancing"); 36 p.add(c1); 37 p.add(c2); 38 p.add(c3); 39 panel2.add(label3); 40 panel2.add(j3); 41 panel2.add(label4); 42 panel2.add(p); 43 44 JPanel panel3 = new JPanel(); 45 panel3.setPreferredSize(new Dimension(700, 150)); 46 FlowLayout flowLayout1 = new FlowLayout(FlowLayout.CENTER, 50, 10); 47 panel3.setLayout(flowLayout1); 48 JLabel label5 = new JLabel("Sex:"); 49 JPanel p1 = new JPanel(); 50 p1.setLayout(new GridLayout(2, 1)); 51 p1.setBorder(BorderFactory.createLineBorder(null)); 52 ButtonGroup bu = new ButtonGroup(); 53 JRadioButton jr1 = new JRadioButton("Male"); 54 JRadioButton jr2 = new JRadioButton("Female"); 55 bu.add(jr1); 56 bu.add(jr2); 57 p1.add(jr1); 58 p1.add(jr2); 59 panel3.add(label5); 60 panel3.add(p1); 61 add(panel1); 62 add(panel2); 63 add(panel3); 64 65 JPanel panel4 = new JPanel(); 66 panel4.setPreferredSize(new Dimension(700, 150)); 67 JButton b1 = new JButton("Validate"); 68 panel4.add(b1); 69 JButton b2 = new JButton("Reset"); 70 panel4.add(b2); 71 add(panel4); 72 73 FlowLayout flowLayout = new FlowLayout(); 74 this.setLayout(flowLayout); 75 this.setTitle("Students Detail"); 76 this.setBounds(200, 200, 800, 400); 77 this.setVisible(true); 78 this.setDefaultCloseOperation(DISPOSE_ON_CLOSE); 79 80 b1.addActionListener(new ActionListener() { 81 82 @Override 83 public void actionPerformed(ActionEvent e) { 84 String xueli = j2.getSelectedItem().toString(); 85 System.out.println("Name:" + j1.getText()); 86 System.out.println("Qualification:" + xueli); 87 String hobbystring = "Hobby:"; 88 if (c1.isSelected()) { 89 hobbystring += "Reading"; 90 } 91 if (c2.isSelected()) { 92 hobbystring += "Singing"; 93 } 94 if (c3.isSelected()) { 95 hobbystring += "Dancing"; 96 } 97 System.out.println("Address:" + j3.getText()); 98 if (jr1.isSelected()) { 99 System.out.println("Sex:Male"); 100 } 101 if (jr2.isSelected()) { 102 System.out.println("Sex:Female"); 103 } 104 System.out.println(hobbystring); 105 } 106 }); 107 b2.addActionListener(new ActionListener() { 108 109 @Override 110 public void actionPerformed(ActionEvent e) { 111 j1.setText(null); 112 j3.setText(null); 113 j2.setSelectedIndex(0); 114 c1.setSelected(false); 115 c2.setSelected(false); 116 c3.setSelected(false); 117 bu.clearSelection(); 118 } 119 }); 120 } 121 122 public static void main(String args[]) { 123 new test(); 124 } 125 126 }
（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。
練習2：採用GUI介面設計以下程式：
l 編制一個程式，將身份證號.txt 中的資訊讀入到記憶體中；
l 按姓名字典序輸出人員資訊；
l 查詢最大年齡的人員資訊；
l 查詢最小年齡人員資訊；
l 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；
l 查詢人員中是否有你的同鄉。
l 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。
1 package demo1; 2 3 import java.awt.*; 4 import javax.swing.*; 5 6 public class ButtonTest { 7 public static void main(String[] args) { 8 EventQueue.invokeLater(() -> { 9 JFrame frame = new Main(); 10 frame.setTitle("身份證"); 11 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 12 frame.setVisible(true); 13 }); 14 } 15 }View Code
1 package demo1; 2 3 import java.io.BufferedReader; 4 import java.io.File; 5 import java.io.FileInputStream; 6 import java.io.InputStreamReader; 7 import java.io.FileNotFoundException; 8 import java.io.IOException; 9 import java.util.ArrayList; 10 import java.util.Arrays; 11 import java.util.Collections; 12 import java.util.Scanner; 13 import java.awt.*; 14 import javax.swing.*; 15 import java.awt.event.*; 16 17 public class Main extends JFrame { 18 private static ArrayList<Student> studentlist; 19 private static ArrayList<Student> list; 20 private JPanel panel; 21 private JPanel buttonPanel; 22 private static final int DEFAULT_WITH = 600; 23 private static final int DEFAULT_HEIGHT = 300; 24 25 public Main() { 26 studentlist = new ArrayList<>(); 27 Scanner scanner = new Scanner(System.in); 28 File file = new File("C:\\Users\\ASUS\\Desktop\\身份證號.txt"); 29 try { 30 FileInputStream fis = new FileInputStream(file); 31 BufferedReader in = new BufferedReader(new InputStreamReader(fis)); 32 String temp = null; 33 while ((temp = in.readLine()) != null) { 34 35 Scanner linescanner = new Scanner(temp); 36 37 linescanner.useDelimiter(" "); 38 String name = linescanner.next(); 39 String number = linescanner.next(); 40 String sex = linescanner.next(); 41 String age = linescanner.next(); 42 String province = linescanner.nextLine(); 43 Student student = new Student(); 44 student.setName(name); 45 student.setnumber(number); 46 student.setsex(sex); 47 int a = Integer.parseInt(age); 48 student.setage(a); 49 student.setprovince(province); 50 studentlist.add(student); 51 52 } 53 } catch (FileNotFoundException e) { 54 System.out.println("學生資訊檔案找不到"); 55 e.printStackTrace(); 56 } catch (IOException e) { 57 System.out.println("學生資訊檔案讀取錯誤"); 58 e.printStackTrace(); 59 } 60 panel = new JPanel(); 61 panel.setLayout(new BorderLayout()); 62 JTextArea jt = new JTextArea(); 63 panel.add(jt); 64 add(panel, BorderLayout.NORTH); 65 buttonPanel = new JPanel(); 66 buttonPanel.setLayout(new GridLayout(1, 7)); 67 JButton jButton = new JButton("字典排序"); 68 JButton jButton1 = new JButton("年齡最大和年齡最小"); 69 JLabel lab = new JLabel("猜猜你的老鄉"); 70 JTextField jt1 = new JTextField(); 71 JLabel lab1 = new JLabel("找找同齡人（年齡相近）："); 72 JTextField jt2 = new JTextField(); 73 JLabel lab2 = new JLabel("輸入你的身份證號碼："); 74 JTextField jt3 = new JTextField(); 75 JButton jButton2 = new JButton("退出"); 76 jButton.setBounds(110, 90, 60, 30); 77 jButton1.setBounds(110, 90, 60, 30); 78 jt1.setBounds(110, 90, 60, 30); 79 jt2.setBounds(110, 90, 60, 30); 80 jt3.setBounds(110, 90, 60, 30); 81 jButton2.setBounds(110, 90, 60, 30); 82 jButton.addActionListener(new ActionListener() { 83 public void actionPerformed(ActionEvent e) { 84 Collections.sort(studentlist); 85 jt.setText(studentlist.toString()); 86 } 87 }); 88 jButton1.addActionListener(new ActionListener() { 89 public void actionPerformed(ActionEvent e) { 90 int max = 0, min = 100; 91 int j, k1 = 0, k2 = 0; 92 for (int i = 1; i < studentlist.size(); i++) { 93 j = studentlist.get(i).getage(); 94 if (j > max) { 95 max = j; 96 k1 = i; 97 } 98 if (j < min) { 99 min = j; 100 k2 = i; 101 } 102 103 } 104 jt.setText("年齡最大：" + studentlist.get(k1) + "年齡最小：" + studentlist.get(k2)); 105 } 106 }); 107 jButton2.addActionListener(new ActionListener() { 108 public void actionPerformed(ActionEvent e) { 109 dispose(); 110 System.exit(0); 111 } 112 }); 113 jt1.addActionListener(new ActionListener() { 114 public void actionPerformed(ActionEvent e) { 115 String find = jt1.getText(); 116 String text=""; 117 String place = find.substring(0, 3); 118 for (int i = 0; i < studentlist.size(); i++) { 119 if (studentlist.get(i).getprovince().substring(1, 4).equals(place)) { 120 text+="\n"+studentlist.get(i); 121 jt.setText("老鄉：" + text); 122 } 123 } 124 } 125 }); 126 jt2.addActionListener(new ActionListener() { 127 public void actionPerformed(ActionEvent e) { 128 String yourage = jt2.getText(); 129 int a = Integer.parseInt(yourage); 130 int near = agenear(a); 131 int value = a - studentlist.get(near).getage(); 132 jt.setText("年齡相近：" + studentlist.get(near)); 133 } 134 }); 135 jt3.addActionListener(new ActionListener() { 136 public void actionPerformed(ActionEvent e) { 137 list = new ArrayList<>(); 138 Collections.sort(studentlist); 139 String key = jt3.getText(); 140 for (int i = 1; i < studentlist.size(); i++) { 141 if (studentlist.get(i).getnumber().contains(key)) { 142 list.add(studentlist.get(i)); 143 jt.setText("emmm！你可能是：\n" + list); 144 //System.out.println("可能的人：" + studentlist.get(i)); 145 //jt.setText("可能的人：" + studentlist.get(i)); 146 } 147 } 148 } 149 }); 150 buttonPanel.add(jButton); 151 buttonPanel.add(jButton1); 152 buttonPanel.add(lab); 153 buttonPanel.add(jt1); 154 buttonPanel.add(lab1); 155 buttonPanel.add(jt2); 156 buttonPanel.add(lab2); 157 buttonPanel.add(jt3); 158 buttonPanel.add(jButton2); 159 add(buttonPanel, BorderLayout.SOUTH); 160 setSize(DEFAULT_WITH, DEFAULT_HEIGHT); 161 } 162 163 public static int agenear(int age) { 164 int min = 53, value = 0, k = 0; 165 for (int i = 0; i < studentlist.size(); i++) { 166 value = studentlist.get(i).getage() - age; 167 if (value < 0) 168 value = -value; 169 if (value < min) { 170 min = value; 171 k = i; 172 } 173 } 174 return k; 175 } 176 177 } 178 179 180 MainView Code
1 package demo1; 2 3 public class Student implements Comparable<Student> { 4 5 private String name; 6 private String number ; 7 private String sex ; 8 private int age; 9 private String province; 10 11 public String getName() { 12 return name; 13 } 14 public void setName(String name) { 15 this.name = name; 16 } 17 public String getnumber() { 18 return number; 19 } 20 public void setnumber(String number) { 21 this.number = number; 22 } 23 public String getsex() { 24 return sex ; 25 } 26 public void setsex(String sex ) { 27 this.sex =sex ; 28 } 29 public int getage() { 30 31 return age; 32 } 33 public void setage(int age) { 34 // int a = Integer.parseInt(age); 35 this.age= age; 36 } 37 38 public String getprovince() { 39 return province; 40 } 41 public void setprovince(String province) { 42 this.province=province ; 43 } 44 45 public int compareTo(Student o) { 46 return this.name.compareTo(o.getName()); 47 } 48 49 public String toString() { 50 return name+"\t"+sex+"\t"+age+"\t"+number+"\t"+province+"\n"; 51 } 52 } 53 54 55 StudentView Code
練習3：採用GUI介面設計以下程式
l 編寫一個計算器類，可以完成加、減、乘、除的操作
l 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；
l 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。
1 package ui_test; 2 3 import java.awt.*; 4 import java.awt.event.ActionEvent; 5 import java.awt.event.ActionListener; 6 import java.io.BufferedOutputStream; 7 import java.io.File; 8 import java.io.FileOutputStream; 9 import java.io.IOException; 10 import java.util.ArrayList; 11 12 import javax.swing.*; 13 14 public class MyExGUI extends JFrame { 15 ArrayList<String> user_zongti = new ArrayList<String>(); 16 ArrayList<String> user_zonganswer = new ArrayList<String>(); 17 ArrayList<String> user_answer = new ArrayList<String>(); 18 ArrayList<String> true_answer = new ArrayList<String>(); 19 ArrayList<String> jta_timu = new ArrayList<String>(); 20 ArrayList<String> jta_zong = new ArrayList<String>(); 21 ArrayList<Integer> user_fenshu = new ArrayList<Integer>(); 22 JMenuBar jm; // 選單條元件 23 JMenu menu;// 選單 24 JMenuItem item1, item2;// 選單項 25 JMenu build; // 二級選單 26 JMenuItem file, project; 27 TextArea answer_all = new TextArea(); 28 TextField jta = new TextField(); 29 TextField jta_answer = new TextField(); 30 JLabel num_answer = new JLabel(); 31 JLabel answer; 32 JToolBar jtb;// 工具條 33 JButton jb1, jb2, jb3, jb4, jb5, jb6, jb7, jb_next; 34 int answer_count; 35 int answer_fenshu; 36 37 public MyExGUI() { 38 // 建立選單 39 jm = new JMenuBar(); 40 41 menu = new JMenu("檔案(F)"); 42 menu.setMnemonic('f'); // 助記符 43 44 build = new JMenu("新建"); 45 46 file = new JMenuItem("檔案"); 47 project = new JMenuItem("答題"); 48 item1 = new JMenuItem("儲存(S)"); 49 item2 = new JMenuItem("退出"); 50 51 answer = new JLabel("第 1 題"); 52 53 // 新增選單項至選單上 54 build.add(file); 55 build.add(project); 56 57 menu.add(build); 58 menu.add(item1); 59 menu.add(item2); 60 menu.addSeparator(); 61 // 將選單加入至選單欄 62 jm.add(menu); 63 64 JPanel contentPanel = new JPanel(); 65 contentPanel.setLayout(null); 66 JLabel daan = new JLabel("答案"); 67 JLabel dengyu = new JLabel("="); 68 num_answer = answer; 69 num_answer.setFont(new Font("宋體", Font.BOLD, 22)); 70 jb_next = new JButton("下一題"); 71 jta.setFont(new Font("宋體", Font.BOLD, 22)); 72 jta_answer.setFont(new Font("宋體", Font.BOLD, 22)); 73 jb_next.setFont(new Font("宋體", Font.BOLD, 22)); 74 daan.setFont(new Font("宋體", Font.BOLD, 22)); 75 dengyu.setFont(new Font("宋體", Font.BOLD, 22)); 76 77 contentPanel.add(num_answer); 78 contentPanel.add(daan); 79 contentPanel.add(dengyu); 80 contentPanel.add(jta); 81 82 contentPanel.add(jta_answer); 83 contentPanel.add(answer_all); 84 contentPanel.add(jb_next); 85 86 num_answer.setBounds(90, 20, 130, 50); 87 daan.setBounds(250, 20, 90, 50); 88 jta.setBounds(50, 70, 150, 30); 89 dengyu.setBounds(205, 70, 20, 20); 90 jta_answer.setBounds(230, 70, 100, 30); 91 jb_next.setBounds(350, 70, 110, 30); 92 answer_all.setBounds(50, 120, 400, 300); 93 94 this.setJMenuBar(jm); // 新增選單欄，不能設定位置，會自動放在最上部 95 this.add(contentPanel); 96 97 this.setTitle("線上答題系統"); 98 this.setSize(600, 500); 99 this.setVisible(true); 100 this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); 101 item1.addActionListener(new ActionListener() { 102 public void actionPerformed(ActionEvent arg0) { 103 FileOutputStream outSTr = null; 104 BufferedOutputStream Buff = null; 105 boolean flag = true; 106 File file; 107 // String test ; 108 do { 109 // test = "test"+count; 110 111 String inputValue = JOptionPane.showInputDialog("Please input file name"); 112 file = new File(inputValue + "test.txt"); 113 if (!file.exists()) { 114 // 建立檔案 115 try { 116 117 flag = file.createNewFile(); 118 119 } catch (IOException e) { 120 e.printStackTrace(); 121 122 } 123 flag = false; 124 } else { 125 126 JOptionPane.showMessageDialog(null, "該檔名已存在，請重新輸入", "ERROR", JOptionPane.ERROR_MESSAGE); 127 flag = true; 128 } 129 } while (flag); 130 // 寫入檔案 131 String u_answer; 132 try { 133 outSTr = new FileOutputStream(file); 134 Buff = new BufferedOutputStream(outSTr); 135 System.out.println("選擇是後執行的程式碼" + user_zongti.size() + user_answer.size()); 136 for (int i = 0; i < user_zongti.size(); i++) { 137 try { 138 Buff.write(user_zongti.get(i).getBytes()); 139 Buff.write(" ".getBytes()); 140 u_answer = user_answer.get(i); 141 if (u_answer.equals("")) 142 u_answer = "沒有作答"; 143 144 Buff.write(u_answer.getBytes()); 145 Buff.write("\r\n".getBytes()); 146 } catch (IOException e) { 147 e.printStackTrace(); 148 i--; 149 } 150 } 151 Buff.flush(); 152 Buff.close(); 153 154 } catch (IOException e) { 155 e.printStackTrace(); 156 } 157 try { 158 outSTr.close(); 159 } catch (IOException e) { 160 e.printStackTrace(); 161 } 162 user_zongti.clear(); 163 user_answer.clear(); 164 } 165 }); 166 167 project.addActionListener(new ActionListener() { 168 public void actionPerformed(ActionEvent arg0) { 169 arithmetic art = new arithmetic(); 170 true_answer = art.list_answer; 171 jta_timu = art.list_timu; 172 jta_zong = art.list; 173 answer_count = 1; 174 answer_all.setText(""); 175 for (int i = 0; i < art.list_timu.size(); i++) { 176 user_zongti.add(jta_zong.get(i)); 177 answer_all.append(jta_timu.get(i)); 178 answer_all.append("\r\n"); 179 } 180 num_answer.setText("第 " + answer_count + " 題"); 181 jta.setText(jta_timu.get(answer_count - 1)); 182 answer_count++; 183 184 } 185 }); 186 jb_next.addActionListener(new ActionListener() { 187 public void actionPerformed(ActionEvent arg0) { 188 String temp; 189 temp = jta_answer.getText(); 190 191 if (jta.getText().equals("")) { 192 JOptionPane.showMessageDialog(null, "錯誤,請匯入題庫", "錯誤", JOptionPane.ERROR_MESSAGE); 193 return; 194 } 195 jta_answer.setText(""); 196 if (answer_count <= 10) { 197 if (isInteger(temp)) { 198 199 user_answer.add(temp); 200 System.out.println("選擇否後執行的程式碼" + temp + "user_size" + user_answer.size()); 201 num_answer.setText("第 " + answer_count + " 題"); 202 jta.setText(jta_timu.get(answer_count - 1)); 203 answer_count++; 204 } else { 205 JOptionPane.showMessageDialog(null, "錯誤", "請輸入數字", JOptionPane.ERROR_MESSAGE); 206 } 207 } else { 208 user_answer.add(temp); 209 System.out.println("選擇否後執行的程式碼" + temp + "user_size" + user_answer.size()); 210 answer_fenshu = 0; 211 for (int i = 0; i < user_answer.size(); i++) { 212 if (user_answer.get(i).equals(true_answer.get(i))) 213 answer_fenshu += 5; 214 } 215 user_fenshu.add(answer_fenshu); 216 Object[] options = { "是", "取消" }; 217 int res = JOptionPane.showOptionDialog(null, "是否檢視成績", "答題完畢", JOptionPane.DEFAULT_OPTION, 218 JOptionPane.YES_NO_OPTION, null, options, options[0]); 219 if (res == JOptionPane.YES_OPTION) { 220 chart ct = new chart(user_fenshu); 221 ct.setVisible(true); 222 223 } else { 224 Object[] option = { "是", "取消" }; 225 int res1 = JOptionPane.showOptionDialog(null, "是否退出程式", "終止框", JOptionPane.DEFAULT_OPTION, 226 JOptionPane.YES_NO_OPTION, null, option, option[0]); 227 228 if (res1 == JOptionPane.YES_OPTION) { 229 dispose(); 230 System.exit(0); 231 232 } else { 233 234 } 235 236 } 237 238 } 239 240 } 241 }); 242 243 item2.addActionListener(new ActionListener() { 244 public void actionPerformed(ActionEvent e) { 245 dispose(); 246 System.exit(0); 247 } 248 }); 249 250 } 251 252 public static boolean isInteger(String str) { 253 for (int i = str.length(); --i >= 0;) { 254 if (!Character.isDigit(str.charAt(i))) { 255 return false; 256 } 257 } 258 return true; 259 } 260 }View Code
1 package ui_test; 2 3 public class Main { 4 5 public static void main(String[] args) { 6 MyExGUI lg = new MyExGUI(); 7 //new MyExGUI(); 8 9 } 10 11 }View Code
1 package ui_test; 2 3 import java.io.BufferedOutputStream; 4 import java.io.File; 5 import java.io.FileOutputStream; 6 import java.io.IOException; 7 import java.util.ArrayList; 8 import java.util.Random; 9 import java.util.Scanner; 10 11 public class arithmetic { 12 ArrayList<String> list = new ArrayList<String>(); 13 ArrayList<String> list_timu = new ArrayList<String>(); 14 ArrayList<String> list_answer = new ArrayList<String>(); 15 16 public arithmetic() { 17 FileOutputStream outSTr = null; 18 BufferedOutputStream Buff = null; 19 int number_n = 10, count; 20 21 ArrayList<String> list_temp = new ArrayList<String>(); 22 String[] operator = new String[] { "+", "-", "*", "/" }; 23 24 Random rand = new Random(); 25 File file1 = new File("test.txt"); 26 if (file1.exists()) { 27 // 建立檔案 28 try { 29 file1.createNewFile(); 30 } catch (IOException e) { 31 e.printStackTrace(); 32 } 33 } 34 35 while (number_n > 0) { 36 int[] number_temp = new int[rand.nextInt(2) + 3]; 37 String[] str_temp = new String[number_temp.length - 1]; 38 for (int i = 0; i < number_temp.length; i++) { 39 if (i < number_temp.length - 1) { 40 number_temp[i] = rand.nextInt(100); 41 list_temp.add(String.valueOf(number_temp[i])); 42 str_temp[i] = operator[rand.nextInt(4)]; 43 list_temp.add(str_temp[i]); 44 45 } 46 47 else { 48 number_temp[i] = rand.nextInt(100); 49 list_temp.add(String.valueOf(number_temp[i])); 50 } 51 } 52 53 count = calculate_RPN(produce_RPN(list_temp)); 54 if (count != -1) { 55 list_timu.add(transform_string(list_temp)); 56 list_answer.add(String.valueOf(count)); 57 list_temp.add(" = " + count); 58 list.add(transform_string(list_temp)); 59 number_n--; 60 list_temp.clear(); 61 } else 62 list_temp.clear(); 63 System.out.println(number_n); 64 65 } 66 try { 67 outSTr = new FileOutputStream(file1); 68 Buff = new BufferedOutputStream(outSTr); 69 for (int i = 0; i < list.size(); i++) { 70 try { 71 Buff.write(list.get(i).getBytes()); 72 Buff.write("\r\n".getBytes()); 73 } catch (IOException e) { 74 e.printStackTrace(); 75 i--; 76 } 77 } 78 Buff.flush(); 79 Buff.close(); 80 81 } catch (IOException e) { 82 e.printStackTrace(); 83 } 84 // Buff.close(); 85 try { 86 outSTr.close(); 87 } catch (IOException e) { 88 e.printStackTrace(); 89 } 90 91 for (int i = 0; i < list.size(); i++) { 92 System.out.print(list.get(i)); 93 System.out.println(); 94 } 95 System.out.print("計算完畢！"); 96 97 } 98 99 public static int calculate_RPN(ArrayList<String> list_temp) { 100 int i = 0, t; 101 double a = 0, b = 0; 102 String l_temp; 103 Stack sk = new Stack(10); 104 for (t = 0; t < list_temp.size(); t++) { 105 l_temp = list_temp.get(i++); 106 if (!isInteger(l_temp)) { 107 b = sk.mypop(); 108 a = sk.mypop(); 109 switch (l_temp) { 110 case "+": 111 sk.mypush(a + b); 112 break; 113 case "-": 114 if(!(a<b)) { 115 sk.mypush(a - b); 116 } 117 else 118 return -1; 119 break; 120 case "*": 121 sk.mypush(a * b); 122 break; 123 case "/": 124 if (b == 0||a<b) 125 return -1; 126 sk.mypush(a / b); 127 break; 128 } 129 System.out.println("st.mytop: " + sk.mypeek()); 130 } else { 131 sk.mypush((double) Integer.parseInt(l_temp)); 132 } 133 134 } 135 if (!sk.myisempty()) { 136 a = sk.mypop(); 137 b = a - (int) a; 138 System.out.println("a: " + a); 139 if (a > 0 && b == 0) { 140 return (int) a; 141 } else 142 return -1; 143 } else 144 return -1; 145 146 } 147 148 public static ArrayList<String> produce_RPN(ArrayList<String> list_temp) { 149 int t = 0, i = 0; 150 String tmp; 151 Tack mytack = new Tack(10); 152 ArrayList<String> lt_temp = new ArrayList<String>(); 153 while (true) { 154 tmp = list_temp.get(i++); 155 if (isInteger(tmp)) { 156 lt_temp.add(tmp); 157 } else { 158 if (mytack.myisempty()) { 159 mytack.mypush(tmp); 160 } 161 162 else { 163 if (isCPriority(tmp, mytack.mypeek())) 164