201771010108 -韩腊梅-第十八周学习总结
分类:
IT文章
•
2022-04-24 23:42:38
实验十八 总复习
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。
已完成
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1;
import java.awt.EventQueue;
import javax.swing.JFrame;
public class Mian {
public static void main(String[] args) {
EventQueue.invokeLater(() -> {
DemoJFrame page = new DemoJFrame();
});
}
}
Mian
package 练习1;
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1;
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("编程练习一");
// 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("姓名:");
name.setSize(100, 50);
fieldname = new JTextField("");
fieldname.setSize(80, 20);
JLabel study = new JLabel("学历:");
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("地址:");
fieldadress = new JTextField();
fieldadress.setPreferredSize(new Dimension(150, 50));
JLabel study = new JLabel("爱好:");
JPanel selectBox = new JPanel();
selectBox.setBorder(BorderFactory.createTitledBorder(""));
selectBox.setLayout(new GridLayout(3, 1));
sing = new JCheckBox("唱歌");
dance = new JCheckBox("跳舞");
draw = new JCheckBox("画画");
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) {
// 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();
nan = new JRadioButton("男");
nv = new JRadioButton("女");
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("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 (sing.isSelected()) {
hobbystring+="唱歌 ";
}
if (dance.isSelected()) {
hobbystring+="跳舞 ";
}
if (draw.isSelected()) {
hobbystring+="画画 ";
}
System.out.println(address);
if (nan.isSelected()) {
System.out.println("男");
}
if (nv.isSelected()) {
System.out.println("女");
}
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);
sing.setSelected(false);
dance.setSelected(false);
draw.setSelected(false);
bg.clearSelection();
}
}
DemoJFrame
练习2:采用GUI界面设计以下程序:
l 编制一个程序,将身份证号.txt 中的信息读入到内存中;
l 按姓名字典序输出人员信息;
l 查询最大年龄的人员信息;
l 查询最小年龄人员信息;
l 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;
l 查询人员中是否有你的同乡。
l 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2;
import java.awt.BorderLayout;
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.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.*;
import java.util.Timer;
import javax.swing.*;
public class find extends JFrame
{
private static ArrayList<Person> Personlist;
Scanner scanner = new Scanner(System.in);
File file = new File("E:\身份证号.txt");
private JPanel Panel;
private JLabel JLabel1;
private JButton Button,Button2,Button3,Button4;
private JTextArea text,text1,text2,text3;
boolean tru=true;
public find() {
Panel = new JPanel();Panel.setLayout(null);
Button = new JButton("1:按姓名字典序输出人员信息");
Button2 = new JButton("2:查询最大年龄信息");
Button4 = new JButton("3:最小年龄人员信息");
Button3 = new JButton("查询相近年龄");
JLabel1 = new JLabel("输入身份证号或者地址查询");
JLabel1.setBounds(900, 50, 400, 30);
text=new JTextArea(30,80);text.setBounds(50, 180, 700, 700);
text1=new JTextArea(1,30);text1.setBounds(900, 80, 400, 30);
text2=new JTextArea(30,80);text2.setBounds(900,180,700, 700);
text3=new JTextArea(30,80);text3.setBounds(420,100,200,40);
Button.addActionListener(new Action());Button.setBounds(50,30,300,40);
Button2.addActionListener(new Action1());Button2.setBounds(50,80,300,40);
Button3.addActionListener(new Action2());Button3.setBounds(650,100,120,40);
Button4.addActionListener(new Action3());Button4.setBounds(50,130,300,40);
Panel.add(JLabel1);
Panel.add(Button);
Panel.add(Button2);
Panel.add(Button3);
Panel.add(Button4);
Panel.add(text);
Panel.add(text2);
Panel.add(text1);
Panel.add(text3);
add(Panel);
Timer timer = new Timer();
TimerTask timeTask=new TimerTask() {
@Override
public void run()
{
// TODO Auto-generated method stub
text2.setText(null);
String place=text1.getText().toString().trim();
for (int i = 0; i <Personlist.size(); i++)
{
String Str=(String)Personlist.get(i).getbirthplace();
if(Str.contains(place)&&!place.equals(""))
{
text2.append(Personlist.get(i).toString());
}
}
for (int i = 0; i <Personlist.size(); i++)
{
String Str=(String)Personlist.get(i).getID();
if(Str.contains(place)&&!place.equals(""))
{
text2.append(Personlist.get(i).toString());
}
}
}
};timer.schedule(timeTask, 0,100);
Personlist = new ArrayList<>();
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 place =linescanner.nextLine();
Person Person = new Person();
Person.setname(name);
Person.setID(ID);
Person.setsex(sex);
int a = Integer.parseInt(age);
Person.setage(a);
Person.setbirthplace(place);
Personlist.add(Person);
}
} catch (FileNotFoundException e) {
System.out.println("查找不到信息");
e.printStackTrace();
} catch (IOException e) {
System.out.println("信息读取有误");
e.printStackTrace();
}
}
private class Action implements ActionListener
{
public void actionPerformed(ActionEvent event)
{
text.setText(null);
Collections.sort(Personlist);
text.append(Personlist.toString());
}
}
private class Action1 implements ActionListener
{
public void actionPerformed(ActionEvent event)
{
text.setText(null);
int max=0;int j,k1 = 0;
for(int i=1;i<Personlist.size();i++)
{
j=Personlist.get(i).getage();
if(j>max)
{
max=j;
k1=i;
}
}
text.append("年龄最大: "+Personlist.get(k1));
}
}
private class Action3 implements ActionListener
{
public void actionPerformed(ActionEvent event)
{
text.setText(null);
int min=100;int j,k2=0;
for(int i=1;i<Personlist.size();i++)
{
j=Personlist.get(i).getage();
if(j<min)
{
min=j;
k2=i;
}
}
text.append("年龄最小: "+Personlist.get(k2));
}
}
private class Action2 implements ActionListener
{
public void actionPerformed(ActionEvent event)
{
text.setText(null);
int a = Integer.parseInt(text3.getText().toString().trim());
int d_value=a-Personlist.get(agenear(a)).getage();
for (int i = 0; i < Personlist.size(); i++)
{
int p=Personlist.get(i).getage()-a;
if(p==d_value||-p==d_value) text.append(Personlist.get(i).toString());
}
}
}
public static int agenear(int age) {
int j=0,min=53,d_value=0,k=0;
for (int i = 0; i < Personlist.size(); i++)
{
d_value=Personlist.get(i).getage()-age;
if(d_value<0) d_value=-d_value;
if (d_value<min)
{
min=d_value;
k=i;
}
} return k;
}
}
find
package 练习2;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Toolkit;
import javax.swing.JFrame;
public class Out {
public static void main (String args[])
{
Toolkit t=Toolkit.getDefaultToolkit();
Dimension s=t.getScreenSize();
EventQueue.invokeLater(() -> {
JFrame frame = new find();
frame.setBounds(0, 0,(int)s.getWidth(),(int)s.getHeight());
frame.setTitle("第七组");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
});
}
}
Out
package 练习2;
public class Person implements Comparable<Person> {
private String name;
private String ID;
private int age;
private String sex;
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 int getage()
{
return age;
}
public void setage(int age)
{
this.age= age;
}
public String getsex()
{
return sex;
}
public void setsex(String sex)
{
this.sex= sex;
}
public String getbirthplace()
{
return birthplace;
}
public void setbirthplace(String birthplace)
{
this.birthplace= birthplace;
}
public int compareTo(Person o)
{
return this.name.compareTo(o.getname());
}
public String toString()
{
return name+" "+sex+" "+age+" "+ID+" "+birthplace+"
";
}
}
Person
练习3:采用GUI界面设计以下程序
l 编写一个计算器类,可以完成加、减、乘、除的操作
l 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;
l 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3;
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 Demo 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 Demo() {
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("题目");
Button.setBounds(50, 150, 150, 50);
Button.setFont(new Font("Courier", Font.PLAIN, 20));
Button.addActionListener(new Action());
JButton Button2 = new JButton("答案");
Button2.setBounds(300, 150, 150, 50);
Button2.setFont(new Font("Courier", Font.PLAIN, 20));
Button2.addActionListener(new Action1());
JButton Button3 = new JButton("输出");
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] = ( a + "/" + b + "=");
list[i] = Math.floorDiv(a, b);
text.setText(a + "/" + b + "=");
i++;
break;
case 1:
c[i] = (a + "*" + b + "=");
list[i] = Math.multiplyExact(a, b);
text.setText(a + "*" + b + "=");
i++;
break;
case 2:
c[i] = (a + "+" + b + "=");
list[i] = Math.addExact(a, b);
text.setText(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] = (a + "-" + b + "=");
text.setText(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();
}
}
}
Demo
package 练习3;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Toolkit;
import javax.swing.JFrame;
public class New {
public static void main (String args[])
{
Toolkit t=Toolkit.getDefaultToolkit();
Dimension s=t.getScreenSize();
EventQueue.invokeLater(() -> {
JFrame frame = new Demo();
frame.setBounds(0, 0,(int)s.getWidth()/2,(int)s.getHeight()/2);
frame.setTitle("第七组");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setVisible(true);
});
}
}
New
、
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。
汇总《面向对象程序设计课程学习进度条》的数据:
2018面向对象程序设计(Java)课程进度表
周次 |
(阅读/编写)代码行数 |
发布博文量/评论他人博文数量 |
课余学习时间(小时) |
学习收获最大的程序阅读或编程任务 |
1 |
30/40 |
1/0 |
8 |
实验题 7 |
2 |
50/80 |
1/0 |
6 |
实验题 4 |
3 |
80/120 |
1/1 |
8 |
实验题 3 |
4 |
300/100 |
1/0 |
10 |
实验题3 |
5 |
—— |
—— |
—— |
—— |
6 |
280/200 |
1/0 |
6 |
实验题2和实验3(例题) |
7 |
300/288 |
1/0 |
8 |
测试题 |
8 |
400/320 |
1/0 |
6 |
实验3 |
9 |
450/480 |
1/0 |
8 |
实验1、2 |
10 |
400/320 |
1/0 |
6 |
总结 |
11 |
600/550 |
1/4 |
6 |
结对编程 |
12 |
600/500 |
1/0 |
10 |
习题练习 |
13 |
600/450 |
1/0 |
8 |
随机点名器实验 |
14 |
650/400 |
1/0 |
6 |
小组讨论 |
15 |
550/550 |
1/0 |
8 |
模糊查找,13-6测试 |
16 |
600/450 |
1/0 |
6 |
练习2 |
17 |
350/400 |
1/0 |
4 |
练习1 |
18 |
400/500 |
1/0 |
5 |
|
|
|
|
|
|
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)
学习方法以及学习心得:
1.在学习Java之前我们已经接触过C语言,Java和C都是指令式语言,但它们也存在很多不同,所以在学习过程中我们需要运用一些C的知识,但更应该从它们的不同入手,深刻的去学习;
2.在我们学习过程中,代老师每周都会提前将课件发到QQ学习群里,并且通过提前完成实验然后再进行知识总结的方式授学,在这种教学方式下我们可以通过实验找出自己的不足,对编程能力的提升非常有用;
3.在编写程序的过程中,我总是采取最基本的操作,所以编程速度很慢,编程中会遇到各种各样的问题,我个人认为问题最多的可能就是程序思路正确,但在编写过程中总是出现各种错误,在查找资料修改错误时,最好在网上或其他参考资料上查找,因为Java课本太厚,可能很久都不会查到,但是在此之前你需要弄明白你出错的原因。网上有很多的学习资源,之前代老师给我们推荐过mooc平台翁恺老师的课程,而且博客园也是一个很好的平台,有很多大神也会在博客园分享Java的知识,只要愿意学,资源你永远用不完,所以我们自己要有学习的意识;
4.编程需要自己多动手,那算法就应该是动脑的时候的,给出算法,我们要自觉地去分析它是在进行什么操作,可不可以用其它的代码表达同样的操作;
5.语法是需要不断积累的,我这一点做的非常不好,我总是记不住东西,有时候遇见过的问题再出现时我只是觉得好熟悉,可是就是想不起怎么解决,其实有时候笨方法或许真的很有用,我记得翁恺老师在讲课视频中也说过:遇到好的编程语句就把它摘抄在小笔记本上,有时候总是记不住的东西写一遍印象会深很多,而且就算你依然没有记住,下次查找也会比较方便,慢慢地就会掌握这些知识了。
6.英语学的好的同学对字母比较敏感,学编程语言也稍微容易,并且也容易通过英文提示找到代码的错误,但英语学的不好的同学也并不是学不好编程语言。我自己的英语就比较差,所以一直对编程语言也有一种莫名的恐惧,助教学长是我很好的榜样,他英语也不太好,但他的编程能力真的很优秀,我很崇拜他,也希望可以像他一样厉害。
其实每个人的学习方法都不同,按照自己的实际情况去制定适合自己的学习方法才是最好的,但坚持是一样的,坚持,每天进步一点,一定会有收获的,以上是我的个人观点,希望可以帮助到大家,也希望自己这个Java菜鸟可以学好这门语言。