201771010137 赵栋《面向对象程序设计（java）》第十七周学习总结

Posted 2021-01-31 zd0421

 

(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。

程序如下：

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.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);

    }

    /*
     * 设置面板一
     */
    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();
    }
}

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
    }
}

程程序运行结果如下：

 

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。

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.Collections;
import java.util.Scanner;

public class Main{
    private static ArrayList<Student> studentlist;
    public static void main(String[] args) {
        studentlist = new ArrayList<>();
        Scanner scanner = new Scanner(System.in);
        File file = new File("D:\\text");
        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("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();
        }
        boolean isTrue = true;
        while (isTrue) {
            System.out.println("选择你的操作，输入正确格式的选项");
            System.out.println("A.字典排序");
            System.out.println("B.输出年龄最大和年龄最小的人");
            System.out.println("C.寻找老乡");
            System.out.println("D.寻找年龄相近的人");
            System.out.println("F.退出");
            String m = scanner.next();
            switch (m) {
            case "A":
                Collections.sort(studentlist);              
                System.out.println(studentlist.toString());
                break;
            case "B":
                 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;
                 }
                 
                 }  
                 System.out.println("年龄最大："+studentlist.get(k1));
                 System.out.println("年龄最小："+studentlist.get(k2));
                break;
            case "C":
                 System.out.println("老家?");
                 String find = scanner.next();        
                 String place=find.substring(0,3);
                 for (int i = 0; i <studentlist.size(); i++) 
                 {
                     if(studentlist.get(i).getprovince().substring(1,4).equals(place)) 
                         System.out.println("老乡"+studentlist.get(i));
                 }             
                 break;
                 
            case "D":
                System.out.println("年龄：");
                int yourage = scanner.nextInt();
                int near=agenear(yourage);
                int value=yourage-studentlist.get(near).getage();
                System.out.println(""+studentlist.get(near));
                break;
            case "F":
                isTrue = false;
                System.out.println("退出程序!");
                break;
                default:
                System.out.println("输入有误");

            }
        }
    }
        public static int agenear(int age) {      
        int j=0,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;         
      }

}

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) {
            // int a = Integer.parseInt(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+"	"+sex+"	"+age+"	"+number+"	"+province+"
";
    }    
}

 

 

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。

程序如下：

import java.util.Scanner;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Random;

public class Demo {
    public static void main(String[] args) {

        Scanner in = new Scanner(System.in);
        Number counter = new Number();
        PrintWriter out = null;
        try {
            out = new PrintWriter("text.txt");
        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        int sum = 0;

        for (int i = 1; i <= 10; i++) {

            int a = (int) Math.round(Math.random() * 100);
            int b = (int) Math.round(Math.random() * 100);
            int m = (int) Math.round(Math.random() * 3);
            Random n = new Random();

            switch (m) {
            case 0:
                System.out.println(i + ": " + a + "/" + b + "=");

                while (b == 0) {
                    b = (int) Math.round(Math.random() * 100);
                }

                int c = in.nextInt();
                out.println(a + "/" + b + "=" + c);
                if (c == counter.division(a, b)) {
                    sum += 10;
                    System.out.println("恭喜答案正确");
                } else {
                    System.out.println("抱歉，答案错误");
                }

                break;

            case 1:
                System.out.println(i + ": " + a + "*" + b + "=");
                int c1 = in.nextInt();
                out.println(a + "*" + b + "=" + c1);
                if (c1 == counter.multiplication(a, b)) {
                    sum += 10;
                    System.out.println("恭喜答案正确");
                } else {
                    System.out.println("抱歉，答案错误");
                }
                break;
            case 2:
                System.out.println(i + ": " + a + "+" + b + "=");
                int c2 = in.nextInt();
                out.println(a + "+" + b + "=" + c2);
                if (c2 == counter.add(a, b)) {
                    sum += 10;
                    System.out.println("恭喜答案正确");
                } else {
                    System.out.println("抱歉，答案错误");
                }

                break;
            case 3:
                System.out.println(i + ": " + a + "-" + b + "=");
                int c3 = in.nextInt();
                out.println(a + "-" + b + "=" + c3);
                if (c3 == counter.reduce(a, b)) {
                    sum += 10;
                    System.out.println("恭喜答案正确");
                } else {
                    System.out.println("抱歉，答案错误");
                }
                break;

            }

        }
        System.out.println("成绩" + sum);
        out.println("成绩:" + sum);
        out.close();

    }
}

public class Number {
    private int a;
    private int b;

    public int add(int a, int b) {
        return a + b;
    }

    public int reduce(int a, int b) {
        return a - b;
    }

    public int multiplication(int a, int b) {
        return a * b;
    }

    public int division(int a, int b) {
        if (b != 0)
            return a / b;
        else
            return 0;
    }

}

程序运行结果：

  

 

三：实验总结

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。

       这一学期，我们学习了java这门语言，经过一学期的学习，对Java语言掌握了很多。总体来说，我们这学期学习了java的基本程序设计结构、对象与类、继承、接口、泛型程序设计以及图形用户界面几个大块。最主要的是老师请了助教，通过助教在课上还有课下给我们演示以及讲解程序，我们学起来轻松了很多，掌握了很多。而且在老师的划分梳理下，让我们的学习能够系统性地进步，成功学完大部分基础性知识。还有就是老师采用多种教学方法，让我们能在学习中充满主动性，更好地完成学习任务，更投入地去学习。