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 练习一; import java.awt.EventQueue; import javax.swing.JFrame; public class Main { public static void main(String[] args) { EventQueue.invokeLater(() -> { DemoJFrame page = new DemoJFrame(); }); } }
Main
package 练习一; 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); } }
WinCenter
package 练习一; 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() { // 设置窗口大小 this.setSize(800, 400); // 设置可见性 this.setVisible(true); // 设置标题 this.setTitle("用户信息采集"); // 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); // 设置容器的为流布局 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) { // TODO 自动生成的方法存根 jPanel.setPreferredSize(new Dimension(700, 45)); // 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("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) { // TODO 自动生成的方法存根 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)); 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) { // TODO 自动生成的方法存根 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) { // 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("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() { // TODO 自动生成的方法存根 // 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 (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() { // TODO 自动生成的方法存根 fieldadress.setText(null); fieldname.setText(null); comboBox.setSelectedIndex(0); read.setSelected(false); sing.setSelected(false); dance.setSelected(false); bg.clearSelection(); } }
DemoJFrame
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 练习二; import java.awt.*; import javax.swing.*; public class IdTest { public static void main(String[] args) { EventQueue.invokeLater(() -> { JFrame frame = new Main(); frame.setTitle("身份证信息查询"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); }); } } IdTest
IdTest
package 练习二; import java.io.BufferedReader; import java.io.File; import java.io.FileInputStream; import java.io.InputStreamReader; import java.io.FileNotFoundException; import java.io.IOException; import java.util.ArrayList; import java.util.Arrays; import java.util.Collections; import java.util.Scanner; import java.awt.*; import javax.swing.*; import java.awt.event.*; public class Main extends JFrame { private static ArrayList<Student> studentlist; private static ArrayList<Student> list; private JPanel panel; private JPanel buttonPanel; private static final int DEFAULT_WITH = 900; private static final int DEFAULT_HEIGHT = 600; public Main() { studentlist = new ArrayList<>(); Scanner scanner = new Scanner(System.in); File file = new File("G:\\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 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("文件找不到"); e.printStackTrace(); } catch (IOException e) { System.out.println("文件读取错误"); e.printStackTrace(); } panel = new JPanel(); panel.setLayout(new BorderLayout()); JTextArea A = new JTextArea(); panel.add(A); add(panel, BorderLayout.NORTH); buttonPanel = new JPanel(); buttonPanel.setLayout(new GridLayout(6, 2)); JButton jButton = new JButton("字典排序"); JButton jButton1 = new JButton("年龄最大和年龄最小"); JLabel lab1 = new JLabel("寻找你的老乡"); JTextField a1 = new JTextField(); JLabel lab2 = new JLabel("寻找找同龄人:"); JTextField a2 = new JTextField(); JLabel lab3 = new JLabel("输入身份证号码查询信息:"); JTextField a3 = new JTextField(); JButton jButton2 = new JButton("退出"); jButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { Collections.sort(studentlist); A.setText(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 = studentlist.get(i).getage(); if (j > max) { max = j; k1 = i; } if (j < min) { min = j; k2 = i; } } A.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); } }); a1.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String find = a1.getText(); String text=""; String place = find.substring(0, 3); for (int i = 0; i < studentlist.size(); i++) { if (studentlist.get(i).getprovince().substring(1, 4).equals(place)) { text+="\n"+studentlist.get(i); A.setText("老乡:" + text); } } } }); a2.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { String yourage = a2.getText(); int a = Integer.parseInt(yourage); int near = agenear(a); int value = a - studentlist.get(near).getage(); A.setText("年龄相近:" + studentlist.get(near)); } }); a3.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { list = new ArrayList<>(); Collections.sort(studentlist); String key = a3.getText(); for (int i = 1; i < studentlist.size(); i++) { if (studentlist.get(i).getnumber().contains(key)) { list.add(studentlist.get(i)); A.setText("结果:\n" + list); } } } }); buttonPanel.add(jButton); buttonPanel.add(jButton1); buttonPanel.add(lab1); buttonPanel.add(a1); buttonPanel.add(lab2); buttonPanel.add(a2); buttonPanel.add(lab3); buttonPanel.add(a3); 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 < studentlist.size(); i++) { value = studentlist.get(i).getage() - age; if (value < 0) value = -value; if (value < min) { min = value; k = i; } } return k; } } Main
extends JFrame
package AA; public class Student implements Comparable<Student> { 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"; } } Student
Student implements Comparable
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 练习三; import java.awt.Dimension; import java.awt.EventQueue; import java.awt.Toolkit; import javax.swing.JFrame; public class Main { 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("计算练习"); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); }); } }
Main
package 练习三; import java.awt.Font; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.FileNotFoundException; import java.io.PrintWriter; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JPanel; import javax.swing.JTextArea; 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,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(); } } }
calculator
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:课堂课后实验、慕课网看视频学习、向学长老师同学请教问题等。
学习心得:学习是一种自发性的东西,需要自己去脚踏实地的做,动手最重要。对于初学java来说需要先学会读代码,然后模仿,再自己动手做。
这学期跟着老师学长学到了很多,学习方法,对于学习的态度,动手能力的认知,这些都是我得到的宝贵的财富。感谢老师学长。
意见:希望老师刚开始能带着刚接触java的同学多读代码,因为初学者对于一些抽象的东西很难理解。还有希望学习java的同学,重心能放在动手上。
原文地址:https://www.cnblogs.com/lcjcc/p/10199573.html