实验十八 总复习
实验时间 2018-12-30
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。
程序如下：
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import java.awt.EventQueue; import javax.swing.JFrame; public class Mian {
public static void main(String[] args) {
EventQueue.invokeLater(() -> {
DemoJFrame page = new DemoJFrame();
});
}
}
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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();
}
}
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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
}
}
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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+"\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。
在大一的时候接触了C语言，刚拿到书的时候，相对于高中的书厚了很多，虽然学的不怎么好，但最后还是学完了。这学期当拿到相当于两个C语言的Java时，感觉还是C语言好呀（哈哈），这一学期下来在老师的讲解中，学长的不断辅导里，对这门新的编程语言有了认识和了解。也学习到了很多知识， 也对Java语言产生了一些兴趣，总体来说，Java语言我们这学期学习了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。在学习过程中，老师主要采用课堂讲解，实验课上通过自己运行成型来强化理论知识。有时候线运行程序进行预习，在课堂讲解。此外，在课堂上老师给我们请了学长（学霸），通过学长给我们演示以及讲解程序，我也学到了很多东西。我知道，短短一学期的学习，来学习一门语言课程是远远不够的，虽然课程结束了，但我还会继续学习这门语言，提升自己的JAVA语言技能。在老师和学长的帮助下，我才对java这门课有了更好的了解和掌握，非常感谢老师和学长！