实验04Java输入输出流报告.doc

实验四 Java 输入输出流import java.util.Scanner;public class CommandOutPut /* * param args */public static void main(String args) / TODO Auto-generated method stubSystem.out.println(Please input ：);Scanner in = new Scanner(System.in);String str = in.nextLine();System.out.println(The output results ：);System.out.println(str);in.close();实验题2 通过键盘输入路径，搜索指定路径下的全部内容。package .jp;import java.io.BufferedReader;import java.io.File;import java.io.IOException;import java.io.InputStreamReader;public class alldir public static void main(String args) throws IOException / TODO Auto-generated method stub/打印指定路径下所有的文件String path = null;System.out.println(please input path: );BufferedReader in = null;in = new BufferedReader(new InputStreamReader(System.in);path=in.readLine();File file = new File(path); System.out.println(path+路径下的所有文件如下：n);File allfile = file.listFiles();for(File f : allfile)System.out.println(f.getName();实验题3设计一个类FileRWTest,实现从input.txt文件中读入数据到字符数组cBuffer中，然后再写入到文件“output.txt”中。package .fileRWTester;import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.FileReader;import java.io.FileWriter;import java.io.IOException;public class FileRWTest /* * param args * throws IOException */public static void main(String args) throws IOException / TODO Auto-generated method stubBufferedReader source = new BufferedReader(new FileReader(d:input.txt);BufferedWriter target = new BufferedWriter(new FileWriter(d:output.txt);/byte cBuffer = new byte(int)(CharSequence) source).length();String temp = null;/将字节流转换为字符串while (temp = source.readLine() != null) target.write(temp);target.newLine();target.flush();source.close();target.close();实验题4 建立一个书籍信息的文本文件，其中包括编号、书籍名称、版本、价格、销售额字段及5本书籍的记录。编写程序读入书籍信息文件并将第3本、第4本书籍价格分别增加20和30，再将修改后的书籍信息文件输出到另一个文本文件中（文件名称为book.txt）。文本文件book.txt内容如下：编号 名称 版本 价格 销售额1001Java程序设计第2版56.95601002 Java开发实战第1版98.98201003C+程序设计指南第3版62.53621004EJB3.0入门经典第1版59.812801005 Spring3.0 in Action 第3版 95.8 1189设计思路：首先建立一个Book类，定义属性private String num，private String name，private String edition，private Float price，private Float slaes，在主函数中创建5个实例，并把值赋给String text,然后调用target.write()函数写入文件book里。检测是否写入，用read()函数读出：package .Input.tester;import java.io.BufferedWriter;import java.io.FileWriter;import java.io.IOException;import .Input.clas.Book;public class InputTester /* * param args * throws IOException */public static void main(String args) throws IOException / TODO Auto-generated method stubBook b1 = new Book(1001, Java程序设计, 第2版, 56.9F, 560f);Book b2 = new Book(1002, Java开发实战, 第1版, 98.9f, 820f);Book b3 = new Book(1003, C+程序设计指南, 第3版, 62.5f, 362f);Book b4 = new Book(1004, EJB3.0入门经典, 第1版, 59.8f, 1280f);Book b5 = new Book(1005, Spring3.0 in Action, 第3版 , 95.8f, 1189f);Book books = b1, b2, b3, b4, b5 ;String text = null;for (int index = 0; index 60;try Statement st = conn.createStatement();ResultSet result = st.executeQuery(sql);/* * DatabaseMetaData metadata = conn.getMetaData(); ResultSet res = * metadata.getColumns(null, null,student,null); * * int i = 0; while(res.next() i+; System.out.println(i); */System.out.println(Id + Name + Ssex + Score );while (result.next() System.out.println(result.getString(1) + + result.getString(2) + + result.getString(3)+ + result.getString(4); catch (SQLException e) e.printStackTrace();package cn.student.jp;import cn.student.jp.data.Student;public class qtest /* * param args */public static void main(String args) / TODO Auto-generated method stub Student stu = new Student(); String sql = select * from student where Score 60; stu.searchRecordsByElement(sql);实验题3 熟悉课堂内容，学习掌握数据库访问编程实现的程序结构。（1）设计一个与连接数据库相关接口UserDao（访问数据库增、删、改、查DAO（Data Access Object，数据访问对象），一般针对不同的数据库表采用不同的DAO功能实现类。）（2）设计持久实体类（PO）封装装数据库表中的各个字段（3）设计一个类，实现UserDao接口，完成访问数据库的相关操作（增、删、改、查）；（4）设计一个类，测试UserDao的实现类。（5）修改perties文件，切换UserDao的实现。package cn.jp;import java.util.Date;import cn.jp.data.User;import cn.jp.data.UserDaoImpl;public class UserDaotest /* * param args */public static void main(String args) / TODO Auto-generated method stubUserDaoImpl udi = new UserDaoImpl();User user1 = new User();user1.setId(201101);user1.setName(张三);user1.setBirthday(new Date();user1.setMoney(2222);User user2 = new User();user2.setId(201102);user2.setName(李四);user2.setBirthday(new Date();user2.setMoney(2000);/*int b = udi.insertUser(1, 夏翔, 123, 1991-10-08, 20);if(b0)System.out.println(成功！);elseSystem.out.println(失败！);*/package cn.jp.data;import java.sql.Connection;import java.sql.DriverManager;import java.sql.ResultSet;import java.sql.SQLException;import java.sql.Statement;import java.util.Properties;import javax.sql.DataSource;public final class Jdbc private static final String URL = jdbc:mysql:/:3306/test;private static final String USERNAME = root;private static final String PASSWORD = ;private static Connection conn = null;private Jdbc() static / 负责加载数据库驱动try System.out.println(加载数据库驱动程序！);Class.forName(com.mysql.jdbc.Driver); catch (ClassNotFoundException e) System.out.println(在加载数据库驱动程序时抛出异常，内容如下：);e.printStackTrace();public static Connection getConn() / 负责创建并返回数据库连接if (conn = null) / 数据库连接不存在try System.out.println(创建数据库连接！);conn = DriverManager.getConnection(URL, USERNAME, PASSWORD); catch (SQLException e) System.out.println(在创建数据库连接时抛出异常，内容如下：);e.printStackTrace();return conn;public static void free(ResultSet rs, Statement st, Connection conn) try if (rs != null)rs.close(); catch (SQLException e) e.printStackTrace(); finally try if (st != null)st.close(); catch (SQLException e) e.printStackTrace(); finally if (conn != null)try conn.close(); catch (Exception e) e.printStackTrace();package cn.jp.data;import java.util.Date;public class User private long id;private String name;private Date birthday;private float money;public User() public long getId() return id;public void setId(long id) this.id = id;public String getName() return name;public void setName(String name) = name;public Date getBirthday() return birthday;public void setBirthday(Date birthday) this.birthday = birthday;public float getMoney() return money;public void setMoney(float money) this.money = money;Overridepublic String toString() return id= + id + , name= + name + , birthday= + birthday+ , money= + money ;package cn.jp.data;import java.util.Date;public interface UserDao public int insertUser(int id,String username, int password,String birthday,float money) ;public void deleteUser(String username);public void findUser(String username);public void updateUserPassword(String username,int password);package cn.jp.data;import java.sql.Connection;import java.sql.PreparedStatement;import java.sql.ResultSet;import java.sql.SQLException;import java.text.SimpleDateFormat;import java.util.Date;public class UserDaoImpl implements UserDao public UserDaoImpl() Overridepublic int insertUser(int id, String username, int password,String birthday, float money) Connection conn = null;PreparedStatement pst = null;ResultSet rs = null;conn = Jdbc.getConn();int data = 0;Date d = convertDate(birthday); try pst = conn.prepareStatement(insert into User value(?,?,?,?,?);pst.setInt(1, id);pst.setString(2, username);pst.setInt(3, password);pst.setDate(4,new java.sql.Date(d.getTime();/?经典pst.setFloat(5, money);data = pst.executeUpdate();Jdbc.free(rs, pst, conn); catch (SQLException e) / TODO Auto-generated catch blocke.printStackTrace(); return data;Overridepublic void deleteUser(String username) Connection conn = null;PreparedStatement pst = null;ResultSet rs = null;conn = Jdbc.getConn(); try pst = conn.prepareStatement(delete from User where name =?);pst.setString(1, username);pst.executeUpdate();Jdbc.free(rs, pst, conn); catch (SQLException e) / TODO Auto-generated catch blocke.printStackTrace(); Overridepublic void findUser(String username) / TODO Auto-generated method stubConnection conn = null;PreparedStatement pst = null;ResultSet rs = null;conn = Jdbc.getConn(); try pst = conn.prepareStatement(select* from User where name =?);pst.setString(1, username);rs = pst.executeQuery();while(rs.next() System.out.println(rs.getString(1)+ +rs.getString(2)+ +rs.getString(3)+ +rs.getString(4);Jdbc.free(rs, pst, conn); catch (SQLException e) / TODO Auto-generated catch blocke.printStackTrace(); Overridepublic void updateUserPassword(String username, int password) / TODO Auto-generated method stubpublic Date convertDate(String strDate) String pat1 = yyyy-MM-dd ;SimpleDateFormat sdf1 = new SimpleDateFormat(pat1) ;/ 实例化模板对象Date d = null ;tryd = sdf1.parse(strDate) ;/ 将给定的字符串中的日期提取出来catch(Exception e)/ 如果提供的字符串格式有错误，则进行异常处理e.printStackTrace() ;/ 打印异常信息return d;实验九 Java GUI1实验目的（1）了解Java图形用户界面开发步骤。（2）掌握Java图形用户界面常用组件的使用。（3）掌握Java图形用户界面事件处理。（4）掌握WindowBuilder安装、swing及SWT组件的用法。2实验内容实验题1 完成图9-1所示学籍管理主界面的设计与制作。基本要求：如果输入用户名：admin，密码：123456，则弹出如图9-2所示窗口，否则弹出如图9-3所示窗口。package L1;import java.awt.BorderLayout;import java.awt.EventQueue;import javax.swing.JFrame;import javax.swing.JOptionPane;import javax.swing.JPanel;import javax.swing.border.EmptyBorder;import javax.swing.JLabel;import java.awt.Font;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import javax.swing.JTextField;import javax.swing.JButton;import javax.swing.JPasswordField;public class test extends JFrame private JPanel contentPane;private JTextField textField;private JPasswordField passwordField;/* * Launch the application. */public static void main(String args) EventQueue.invokeLater(new Runnable() public void run() try test frame = new test();frame.setVisible(true); catch (Exception e) e.printStackTrace(););/* * Create the frame. */public test() setTitle(登录);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setBounds(100, 100, 450, 300);contentPane = new JPanel();contentPane.setBorder(new EmptyBorder(5, 5, 5, 5);setContentPane(contentPane);contentPane.setLayout(null);JLabel name = new JLabel(用户名);name.setFont(new Font(宋体, Font.PLAIN, 16);name.setBounds(118, 28, 62, 21);contentPane.add(name);textField = new JTextField();textField.setFont(new Font(宋体, Font.PLAIN, 16);textField.setBounds(180, 29, 122, 21);contentPane.add(textField);textField.setColumns(10);JLabel password = new JLabel(密 码);password.setFont(new Font(宋体, Font.PLAIN, 16);password.setBounds(118, 72, 62, 21);contentPane.add(password);JButton btnNewButton = new JButton(登录);btnNewButton.