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!
原文地址:https://www.cnblogs.com/zero--/p/10199443.html