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201771010137 赵栋《面向对象程序设计(java)》第十八周学习总结
阅读量:5076 次
发布时间:2019-06-12

本文共 14425 字,大约阅读时间需要 48 分钟。

 

(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
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
max) { max=j; k1=i; } if(j
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) { // 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+"\t"+sex+"\t"+age+"\t"+number+"\t"+province+"\n"; } }

 

 

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。

 

转载于:https://www.cnblogs.com/zd0421/p/10199188.html

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