Java编程中关于日期的常用算法

import javax.swing.*; 

import java.awt.*; 

import java.awt.event.*; 

public class lianliankan implements ActionListener 

{ .lfxww.com/jk/shts/5746941108.html

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JFrame mainFrame; //主面板 

Container thisContainer; 

JPanel centerPanel,southPanel,northPanel; //子面板 

JButton diamondsButton[][] = new JButton[6][5];//游戏按钮数组 

JButton exitButton,resetButton,newlyButton; //退出，重列，重新开始按钮 

JLabel fractionLable=new JLabel("0"); //分数标签 

JButton firstButton,secondButton; //分别记录两次被选中的按钮 

int grid[][] = new int[8][7];//储存游戏按钮位置 

static boolean pressInformation=false; //判断是否有按钮被选中 

int x0=0,y0=0,x=0,y=0,fristMsg=0,secondMsg=0,validateLV; //游戏按钮的位置坐标 

int i,j,k,n;//消除方法控制 

public void init(){ 

mainFrame=new JFrame("JKJ连连看"); 

thisContainer = mainFrame.getContentPane(); 

thisContainer.setLayout(new BorderLayout()); 

centerPanel=new JPanel(); 

southPanel=new JPanel(); 

northPanel=new JPanel(); 

thisContainer.add(centerPanel,"Center"); 

thisContainer.add(southPanel,"South"); 

thisContainer.add(northPanel,"North"); 

centerPanel.setLayout(new GridLayout(6,5)); 

for(int cols = 0;cols < 6;cols++){ 

for(int rows = 0;rows < 5;rows++ ){ 

diamondsButton[cols][rows]=new JButton(String.valueOf(grid[cols+1][rows+1])); 

diamondsButton[cols][rows].addActionListener(this); 

centerPanel.add(diamondsButton[cols][rows]); 

} .lhrb.com.cn/qyxw/fhrl/5745997349.html

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} 

exitButton=new JButton("退出"); 

exitButton.addActionListener(this); 

resetButton=new JButton("重列"); 

resetButton.addActionListener(this); 

newlyButton=new JButton("再来一局"); 

newlyButton.addActionListener(this); 

southPanel.add(exitButton); 

southPanel.add(resetButton); 

southPanel.add(newlyButton); 

fractionLable.setText(String.valueOf(Integer.parseInt(fractionLable.getText()))); 

northPanel.add(fractionLable); 

mainFrame.setBounds(280,100,500,450); 

mainFrame.setVisible(true); 

} 

public void randomBuild() { 

int randoms,cols,rows; 

for(int twins=1;twins<=15;twins++) { 

randoms=(int)(Math.random()*25+1); 

for(int alike=1;alike<=2;alike++) { 

cols=(int)(Math.random()*6+1); 

rows=(int)(Math.random()*5+1); 

while(grid[cols][rows]!=0) { 

cols=(int)(Math.random()*6+1); 

rows=(int)(Math.random()*5+1); 

} 

this.grid[cols][rows]=randoms; 

} 

} 

} 

public void fraction(){ 

fractionLable.setText(String.valueOf(Integer.parseInt(fractionLable.getText())+100)); 

} 

public void reload() { 

int save[] = new int[30]; 

int n=0,cols,rows; 

int grid[][]= new int[8][7]; 

for(int i=0;i<=6;i++) { 

for(int j=0;j<=5;j++) { 

if(this.grid[i][j]!=0) { 

save
=this.grid[i][j]; 

n++; 

} 

} 

} 

n=n-1; 

this.grid=grid; 

while(n>=0) { 

cols=(int)(Math.random()*6+1); 

rows=(int)(Math.random()*5+1); 

while(grid[cols][rows]!=0) { 

cols=(int)(Math.random()*6+1); 

rows=(int)(Math.random()*5+1); 

} 

this.grid[cols][rows]=save
; 

n--; 

} 

mainFrame.setVisible(false); 

pressInformation=false; //这里一定要将按钮点击信息归为初始 

init(); 

for(int i = 0;i < 6;i++){ 

for(int j = 0;j < 5;j++ ){ 

if(grid[i+1][j+1]==0) 

diamondsButton[i][j].setVisible(false); 

} 

} .lhrb.com.cn/qyxw/fhrl/5746000738.html

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}

* JAVA小游戏－拼图 我做的第一个小游戏

* Cell类是继承的按钮类，并加上相应图形，形成方格

*MyCanvas是一个面板，加载Cell类的对象（方格），是这三个类中的核心

*/

import java.awt.Rectangle;

import java.awt.event.MouseEvent;

import java.awt.event.MouseListener;

import javax.swing.Icon;

import javax.swing.ImageIcon;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import java.awt.BorderLayout;

import java.awt.Button;

import java.awt.Choice;

import java.awt.Color;

import java.awt.Container;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import javax.swing.Icon;

import javax.swing.ImageIcon;

import javax.swing.JFrame;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.Icon;

import javax.swing.JButton;

public class MyMainFrame extends JFrame implements ActionListener {

MyCanvas myCanvas;

JPanel panelNorth,panelPreview;//定义上方的面板，及预览所需的面板

Button start,preview,set;//定义开始，预览，设定按钮

Container container;//容器，得到内容面板

public MyMainFrame() {//初使化

container=this.getContentPane();

start=new Button("开始");

start.addActionListener(this);

preview=new Button("预览");

preview.addActionListener(this);

set = new Button("设置");

set.addActionListener(this);

panelPreview=new JPanel();

panelPreview.setLayout(null);

Icon icon=new ImageIcon("pic_"+MyCanvas.pictureID+".jpg");

JLabel label=new JLabel(icon);

label.setBounds(0,0,300,300);

panelPreview.add(label);

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panelNorth=new JPanel();

panelNorth.setBackground(Color.red);

panelNorth.add(start);

panelNorth.add(preview);

panelNorth.add(set);

myCanvas=new MyCanvas();

container.add(myCanvas,BorderLayout.CENTER);

container.add(panelNorth,BorderLayout.NORTH);

this.setTitle("拼图小游戏-明");

this.setLocation(300,200);

this.setSize(308,365);

this.setResizable(false);

this.setVisible(true);

this.setDefaultCloseOperation(3);

}

public static void main(String[] args) {

// TODO 自动生成方法存根

new MyMainFrame();

}

public void actionPerformed(ActionEvent arg0) {//对三个按钮事件的处理

// TODO 自动生成方法存根

Button button=(Button)arg0.getSource();

if(button==start){

myCanvas.Start();

}else if(button==preview){

if(button.getLabel()=="预览"){

container.remove(myCanvas);

container.add(panelPreview);

panelPreview.updateUI();

container.repaint();

button.setLabel("返回");

}else{

container.remove(panelPreview);

container.add(myCanvas);

container.repaint();

button.setLabel("预览");

}

}else if(button==set){//修改所选图片

Choice pic = new Choice();

pic.add("小猫");

pic.add("小猪");

pic.add("云");

pic.add("QQ");

pic.add("卡通");

pic.add("花");

int i=JOptionPane.showConfirmDialog(this, pic, "选择图片", JOptionPane.OK_CANCEL_OPTION);

if(i==JOptionPane.YES_OPTION){

MyCanvas.pictureID=pic.getSelectedIndex()+1;

myCanvas.reLoadPictrue();

Icon icon=new ImageIcon("pic_"+MyCanvas.pictureID+".jpg");

JLabel label=new JLabel(icon);

label.setBounds(0,0,300,300);

panelPreview.removeAll();

panelPreview.add(label);

panelPreview.repaint();

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}

}

}

class MyCanvas extends JPanel implements MouseListener {

boolean hasAddActionListener=false;//设置方格的动作监听器的标志位，TRUE为已经添加上动作事件，FALSE是尚未添加动作事件

Cell cell[];//定义方格

Rectangle cellNull;//定义空方格区域

public static int pictureID=1;//当前选择的图片代号

public MyCanvas() {

this.setLayout(null);

this.setSize(400,400);

cellNull=new Rectangle(200,200,100,100);//空方格区域在第三行每三列

cell=new Cell[9];

Icon icon;

for (int i = 0; i < 3; i++) {//为9个方格加载图片，并初使化坐标，形成三行三列

for(int j=0;j<3;j++){

icon=new ImageIcon("pic_"+pictureID+"_"+(i*3+j+1)+".jpg");

cell[i*3+j]=new Cell(icon);

cell[i*3+j].setLocation(j*100,i*100);

this.add(cell[i*3+j]);

}

}

this.remove(cell[8]);//移除最后一个多余的方格

}

import java.awt.*;

import java.awt.event.*;

import java.sql.*;

import javax.swing.*;

import javax.swing.table.DefaultTableModel;

import school.schoolPicture.JdbcUtil;

public class AddScore extends JPanel implements ActionListener {

String[] columnNames = new String[] { "姓名", "学期", "课程ID", "成绩" };

DefaultTableModel dtmScore = new DefaultTableModel(columnNames, 57);

JTable jtAddScore = new JTable(dtmScore);

JScrollPane jspScor
fe87
e = new JScrollPane(jtAddScore);

JComboBox jcbCourse = new JComboBox();

JComboBox jcbClassName = new JComboBox();

JComboBox jcbTerm = new JComboBox();

Connection con = JDBCUtil.getConnection();

// Connection con2 = JdbcUtil.getConnection();

PreparedStatement ps = null;

ResultSet rs = null;

ResultSetMetaData meta = null;

String sql = null;

int cols = 0;

int rowCount = 0;

public AddScore() {

CreateAddScoreGUI();

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public void actionPerformed(ActionEvent e) {

String str = e.getActionCommand();

if ("查询".equals(str)) {

//当点击查询时，用searchScore()方法对其进行处理

searchScore();

} else if ("提交".equals(str)) {

//当点击提交时，用tryCommit()方法对其进行处理

tryCommit();

} else if ("退出".equals(str)) {

this.setVisible(false);

}

}

public void tryCommit() {

if (cols < 1)

return;

sql = "insert into scorexx values(?,?,?,?)";

try {

ps = con.prepareStatement(sql);

String[] value = new String[4];

for (int k = 0; k < rowCount; k++) {

for (int i = 1; i <= cols + 1; i++) {

// 如果成绩为空，取消提交操作，并给出提示。

if (jtAddScore.getValueAt(k, i - 1) != null) {

value[i - 1] = jtAddScore.getValueAt(k, i - 1)

.toString();

} else {

if (i == 4)

JOptionPane

.showMessageDialog(null, "无效成绩输入！成绩不能为空");

return;

}

// 如果成绩字段里面不是数字，则取消本次操作??

// String str = "^[0-9]{1}[0-9]?[0-9]?$";

// if (i == 4) {

// if(jtAddScore.getValueAt(k, i - 1) instanceof Integer){

// if(

// Integer.parseInt(value[3])<0||Integer.parseInt(value[3])>100)

// {JOptionPane.showMessageDialog(null, "成绩只能大于0且小于100");

// return;}

// }

// }

System.out.print(value[i - 1]);

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ps.setString(1, value[0]);

ps.setString(2, value[1]);

ps.setString(3, value[2]);

ps.setInt(4, Integer.parseInt(value[3]));

ps.executeUpdate();

con.commit();

System.out.println();

}

JOptionPane

.showMessageDialog(null, "提交成功：更新 " + rowCount + " 条记录！");

} catch (Exception ew) {

ew.printStackTrace();

}

}

 

// 自动添加课程下拉列表中的课程

public void addCourseToJCheckBoxCourse() {

String courseName = null;

sql = "select cname from coursexx";

try {

ps = con.prepareStatement(sql);

rs = ps.executeQuery();

ResultSetMetaData meta = rs.getMetaData();

int cols = meta.getColumnCount();

while (rs.next()) {

for (int i = 1; i <= cols; i++) {

courseName = rs.getString(i);

System.out.println(courseName);

jcbCourse.addItem(courseName);

rowCount++;

}

}

con.commit();

} catch (Exception ers) {

ers.printStackTrace();

try {

con.rollback();

} catch (Exception er) {

er.printStackTrace();

}

}

}

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public void searchScore() {

// 每次查询之前清空之前的结果

for (int k = 0; k < 50; k++) {

for (int i = 0; i < cols; i++) {

jtAddScore.setValueAt(null, k, i);

}

}

// Method1:JDBC Method2:Hibernate

String cName = jcbCourse.getSelectedItem().toString().trim();

sql = "select x.sname,k.term,k.cno from "

+ "choicesxx x join Coursexx k "

+ "on x.cno=k.cno and k.cname=?";

try {

ps = con.prepareStatement(sql);

ps.setString(1, cName);

rs = ps.executeQuery();

meta = rs.getMetaData();

cols = meta.getColumnCount();

boolean flag = true;

String result = null;

int k = 1;

while (rs.next()) {

for (int i = 1; i <= cols; i++) {

result = rs.getString(i);

jtAddScore.setValueAt(result, k - 1, i - 1);

}

rowCount = k++;

}

} catch (Exception exx) {

exx.printStackTrace();

}

}

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//产生用户界面

public void CreateAddScoreGUI() {

this.setLayout(new FlowLayout());

JLabel jlCourse = new JLabel("课程：");

jcbCourse.addActionListener(this);

jcbCourse.addItem(new String("请选择课程"));

addCourseToJCheckBoxCourse();

this.add(jlCourse);

this.add(jcbCourse);

// JLabel jlClassName = new JLabel("班级：");

// jcbClassName.addActionListener(this);

// jcbClassName.addItem(new String("请选择班级"));

// addClassNameToJCheckBoxClassName();

// this.add(jlClassName);

// this.add(jcbClassName);

// JLabel jlTerm = new JLabel("学期：");

// jcbTerm.addActionListener(this);

// jcbTerm.addItem(new String("请选择学期"));

// addTermToJCheckBoxTerm();

// this.add(jlTerm);

// this.add(jcbTerm);

JButton jbSearch = new JButton("查询");

jbSearch.addActionListener(this);

JButton jbOK = new JButton("提交");

jbOK.addActionListener(this);

JButton jbExit = new JButton("退出");

jbExit.addActionListener(this);

this.add(jbSearch);

this.add(jbOK);

this.add(jbExit);

this.add(jspScore);

this.setVisible(true);

this.setSize(500, 600);

}

public static void main(String[] args) {

new AddScore();

}

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import java.awt.GridLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.sql.*;

import javax.swing.*;

import javax.swing.table.DefaultTableModel;

import school.schoolPicture.JdbcUtil;

public class StudentChooseCourse extends JFrame implements ActionListener {

JTextField jtfSearch = new JTextField(11);

String[] columnNames = new String[] { "课程ID", "课程名", "学时", "学分", "学期", "性质" };

DefaultTableModel dtmSearch = new DefaultTableModel(columnNames, 27);

JTable jtSearch = new JTable(dtmSearch);

JScrollPane jspSearch = new JScrollPane(jtSearch);

JComboBox jcbSearch = new JComboBox();

JTextField jtfSelectedCourse = new JTextField(10);

Connection con = null;

PreparedStatement ps = null;

ResultSet rs = null;

private static String usrName;

private static String passwrd;

//在构造方法中添加两个参数。以便在"提交"时，将学生的身份连同所选的课程，一同记录在学生选课表中。

public StudentChooseCourse(String usrName, String passwrd) {

createSearchCourse();

this.usrName = usrName;

this.passwrd = passwrd;

}

public String getUsrName() {

return usrName;

}

public void setUsrName(String usrName) {

this.usrName = usrName;

}

public String getPasswrd() {

return passwrd;

}

public void setPasswrd(String passwrd) {

this.passwrd = passwrd;

import java.awt.GridLayout;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.sql.*;

import javax.swing.*;

import javax.swing.table.DefaultTableModel;

import school.schoolPicture.JdbcUtil;

public class StudentChooseCourse extends JFrame implements ActionListener {

JTextField jtfSearch = new JTextField(11);

String[] columnNames = new String[] { "课程ID", "课程名", "学时", "学分", "学期", "性质" };

DefaultTableModel dtmSearch = new DefaultTableModel(columnNames, 27);

JTable jtSearch = new JTable(dtmSearch);

JScrollPane jspSearch = new JScrollPane(jtSearch);

JComboBox jcbSearch = new JComboBox();

JTextField jtfSelectedCourse = new JTextField(10);

Connection con = null;

PreparedStatement ps = null;

ResultSet rs = null;

private static String usrName;

private static String passwrd;

//在构造方法中添加两个参数。以便在"提交"时，将学生的身份连同所选的课程，一同记录在学生选课表中。

public StudentChooseCourse(String usrName, String passwrd) {

createSearchCourse();

this.usrName = usrName;

this.passwrd = passwrd;

}

public String getUsrName() {

return usrName;

}

public void setUsrName(String usrName) {

this.usrName = usrName;

}

public String getPasswrd() {

return passwrd;

}

public void setPasswrd(String passwrd) {

this.passwrd = passwrd;

}

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}

package day1;

import java.awt.*;

import java.awt.event.ActionEvent;

import java.awt.event.ActionListener;

import java.awt.event.WindowAdapter;

import java.awt.event.WindowEvent;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.ObjectInputStream;

import java.io.ObjectOutputStream;

import java.util.ArrayList;

import javax.swing.*;

public class userRegister implements ActionListener {

ArrayList<User> list = new ArrayList<User>();

JTextField jtf1 = new JTextField(14);

JTextField jtf2 = new JTextField(14);

JTextField jtf3 = new JTextField(14);

JTextField jtf4 = new JTextField(14);

JFrame jf;

public userRegister() throws Exception {

createGUI();

}

//当事件发生时，自动调用actionPerformed()方法

public void actionPerformed(ActionEvent e) {

String str = e.getActionCommand();

if ("注册".equals(str)) {

User user = new User();

user.setUserName(jtf1.getText());

user.setPassWord(jtf2.getText());

user.setEmail(jtf4.getText());

String rePassWord = jtf3.getText();

if (!(user.getPassWord().equalsIgnoreCase(rePassWord))) {

jtf2.setText("密码输入错误");

jtf3.setText("密码输入错误");

} else {

jf.setTitle("注册成功" + "欢迎您" + user.getUserName());

jtf2.setText("******");

jtf3.setText("******");

list.add(user);

}

} else if ("登录".equals(str)) {

try {

readFromFile();

} catch (Exception e1) {

e1.printStackTrace();}}}

//createGui()方法，用于生成图形用户界面

public void createGUI() {

jf = new JFrame("用户注册");

//当用户关闭窗口时，多个用户信息自动保存到本地文件系统(通过调用writeToFile()方法)

jf.addWindowListener(new WindowAdapter() {

@Override

public void windowClosing(WindowEvent e) {

try {

writeToFile();

} catch (IOException e1) {

e1.printStackTrace();

}

System.exit(0);

}.zhoushan.cn/hyzx/ygtq/5751306694.html

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.zhoushan.cn/hyzx/ygtq/5751305806.html

});

jf.setLayout(new GridLayout(4, 2));

JPanel jp1 = new JPanel();

jf.add(jp1);

JLabel jl1 = new JLabel("User Name:");

jp1.add(jl1);jp1.add(jtf1);

JPanel jp2 = new JPanel();

jf.add(jp2);

JLabel jl2 = new JLabel("Pass Word:");

jp2.add(jl2);jp2.add(jtf2);

JPanel jp3 = new JPanel();

jf.add(jp3);

JLabel jl3 = new JLabel("ReInputPwd:");

jp3.add(jl3);

jp3.add(jtf3);

JPanel jp4 = new JPanel();

jf.add(jp4);

JLabel jl4 = new JLabel("E-mail:");

jp4.add(jl4);jp4.add(jtf4);

JPanel jp5 = new JPanel();

jf.add(jp5);

JButton jb51 = new JButton("注册");

jb51.addActionListener(this);

JButton jb52 = new JButton("登录");

jb52.addActionListener(this);

jp5.add(jb51);jp5.add(jb52);

jf.setSize(500, 300);

jf.setVisible(true);

}

.zhiyin.cn/ylzx/gzpx/5747137905.html

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.zhoushan.cn/hyzx/ygtq/5751306994.html

.zhoushan.cn/hyzx/ygtq/5751306694.html

//readFromFile()方法用于从文件中读取用户对象信息，并将用户对象添加进线性表（list)

public void readFromFile() throws IOException, Exception {

FileInputStream fis = new FileInputStream(new File(

"d:\\userRegister.dat"));

ObjectInputStream ois = new ObjectInputStream(fis);

User read = null;

try {

while (true) {

read = (User) ois.readObject();

if (read == null) {

break;

}

list.add(read);

}

} catch (Exception e) {

}

// System.out.println(list);

User temp = new User(jtf1.getText(), jtf2.getText(), "q");

match(temp);

ois.close();

}.zhiyin.cn/ylzx/gzpx/5747139605.html

.zhiyin.cn/ylzx/gzpx/5747139824.html

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.zhiyin.cn/ylzx/gzpx/5747139094.html

.zhiyin.cn/ylzx/gzpx/5747138601.html

//writeToFile()方法，实现用户信息保存功能。

public void writeToFile() throws IOException {

File file = new File("d:\\userRegister.dat");

file.createNewFile();

ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(

file));

for (User usr : list) {

oos.writeObject(usr);

}

oos.flush();

oos.close();

}

.zhiyin.cn/ylzx/gzpx/5747142295.html

.zhiyin.cn/ylzx/gzpx/5747142507.html

.zhiyin.cn/ylzx/gzpx/5747142710.html

.zhiyin.cn/ylzx/gzpx/5747141040.html

.zhiyin.cn/ylzx/gzpx/5747141370.html

.zhiyin.cn/ylzx/gzpx/5747141793.html

.zhiyin.cn/ylzx/gzpx/5747141614.html

//当用户试图登录时，match()方法可以将用户输入与保存的信息，进行匹配。

//如果用户名和密码正确，登录成功；否则，登录失败。

public void match(User user) {

boolean match = false;

for (User usr : list) {

if (usr.getUserName().equals(user.getUserName())

&& usr.getPassWord().equals(user.getPassWord())) {

jf.setTitle("登录成功");

match = true;

break;

}

}

if (!match) {

jf.setTitle("用户名或密码错误，请重新输入！");

jtf1.setText("");

jtf2.setText("");

jtf3.setText("");

jtf4.setText("");

jtf1.requestFocus();

}

}

public static void main(String[] args) throws Exception {

new userRegister();

}

}

//------------------------------------------------------------//

User类是个用户信息类，包括userName,passWord,email等属性。

public class User implements java.io.Serializable {

private String userName;

private String passWord;

private String email;

public User() {

}

public User(String userName, String passWord, String email) {

super();

this.setUserName(userName);

this.setPassWord(passWord);

this.setEmail(email);

}

public String getEmail() {

return email;

}

public void setEmail(String email) {

this.email = email;

}

public String getPassWord() {

return passWord;

}

public void setPassWord(String passWord) {

this.passWord = passWord;

}

public String getUserName() {

return userName;

}

public void setUserName(String userName) {

this.userName = userName;

}

public String toString(){

return userName+":"+passWord+":"+email;

}

}

Listener {

Connection con;

Statement stmt;

String sql;

ResultSet rs;

StringBuffer sb = new StringBuffer();

JTextField jtf2 = new JTextField("张飞",10);

JTextField jtf3 = new JTextField(10);

JTextField jtf4 = new JTextField(10);

JTextField jtf7 = new JTextField(10);

JTextField jtf5 = new JTextField(10);

JTextField jtf6 = new JTextField(10);

JTextField jtf8 = new JTextField(10);

JTextField jtf9 = new JTextField(10);

JTextArea jta10 = new JTextArea(50, 40);

public void actionPerformed(ActionEvent e) {

String str = e.getActionCommand();

if ("查询".equals(str)) {

//if check the button of 查询，then go to method of searchEmp()

searchEmp();

} else if ("增加".equals(str)) {

//if check the button of 增加，then go to method of addEmp()

addEmp();

} else if ("修改".equals(str)) {

//if check the button of 修改，then go to method of alterEmp()

alterEmp();

} else if ("撤除".equals(str)) {

//if check the button of 撤除，then go to method of deleteEmp()

deleteEmp();

}.zhiyin.cn/ylzx/gzpx/5747142295.html

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.zhoushan.cn/hyzx/ygtq/5751306061.html

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.zhoushan.cn/hyzx/ygtq/5751303739.html

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.zhiyin.cn/ylzx/gzpx/5747117590.html

.zhiyin.cn/ylzx/gzpx/5747113098.html

}

//this is the constructor.

EmpManageSys() {

createGUI();

connectToDataBase();

// searchEmp();

// addEmp();

// deleteEmp();

alterEmp();

}

//connect to the database by using the method getConnection from the class of JdbcUtil.

//You can find the class of JdbcUtil at the button of this page.

public Connection connectToDataBase() {

con = JdbcUtil.getConnection();

System.out.println(con);

return con;

}

public void searchEmp() {

jta10.setText("");

try {

stmt = con.createStatement();

// sql = "select * from Mstar where id=" + jtf3.getText();

// sql1="select * from sd100343 where ="+jtf3.getText();

sql = "select * from Mstar where chineseName="

+ jtf2.getText().toLowerCase().trim() + "or id="

+ jtf3.getText().toLowerCase().trim() + "or engName="

+ jtf4.getText().toLowerCase().trim() + "or UNIT="

+ jtf5.getText().toLowerCase().trim() + "or TEAM="

+ jtf6.getText().toLowerCase().trim() + "or Phone="

+ jtf7.getText().toLowerCase().trim() + "or region="

+ jtf8.getText().toLowerCase().trim() + "or busStation="

+ jtf9.getText().toLowerCase().trim();

stmt.executeQuery(sql);

rs = stmt.getResultSet();

ResultSetMetaData meta = rs.getMetaData();

int cols = meta.getColumnCount();

while (rs.next()) {

for (int i = 1; i <= cols; i++) {

sb.append(" " + meta.getColumnName(i) + " =");

sb.append(rs.getString(i));

}

sb.append("\n");

jta10.setText(sb.toString());

}

} catch (SQLException e11) {

e11.printStackTrace();

}

}

public void addEmp() {

try {

stmt = con.createStatement();

sql = "update Mstar values(" + jtf2.getText() + jtf3.getText()

+ jtf4.getText() + jtf5.getText() + jtf6.getText()

+ jtf7.getText() + jtf8.getText() + jtf9.getText() + ")";

int i = stmt.getUpdateCount();

if ((jtf2.getText() != null) && (jtf4.getText() != null)

&& (jtf6.getText() != null) && (jtf7.getText() != null)) {

stmt.executeUpdate(sql);

jta10.setText("添加记录成功" + i + "条");

} else {

jta10.setText("带*号项为添加记录时不能为空");

}

} catch (SQLException e1) {

e1.printStackTrace();

}

}

public void deleteEmp() {

searchEmp();

try {

stmt = con.createStatement();

sql = "delete from Mstar where chineseName="

+ jtf2.getText().toLowerCase().trim() + "or id="

+ jtf3.getText().toLowerCase().trim() + "or engName="

+ jtf4.getText().toLowerCase().trim() + "or UNIT="

+ jtf5.getText().toLowerCase().trim() + "or TEAM="

+ jtf6.getText().toLowerCase().trim() + "or Phone="

+ jtf7.getText().toLowerCase().trim() + "or region="

+ jtf8.getText().toLowerCase().trim() + "or busStation="

+ jtf9.getText().toLowerCase().trim();

stmt.executeUpdate(sql);

int i = stmt.getUpdateCount();

jta10.setText("撤除操作成功" + i + "条");

} catch (SQLException e) {

e.printStackTrace();

}

}

public void alterEmp() {

searchEmp();

sql = "update Mstar set chineseName="

+ jtf2.getText().toLowerCase().trim() + "and id="

+ jtf3.getText().toLowerCase().trim() + "and engName="

+ jtf4.getText().toLowerCase().trim() + "and UNIT="

+ jtf5.getText().toLowerCase().trim() + "and TEAM="

+ jtf6.getText().toLowerCase().trim() + "and Phone="

+ jtf7.getText().toLowerCase().trim() + "and region="

+ jtf8.getText().toLowerCase().trim() + "and busStation="

+ jtf9.getText().toLowerCase().trim();

int i = 0;

try {

stmt.executeUpdate(sql);

i = stmt.getUpdateCount();

} catch (SQLException e) {

e.printStackTrace();

}

jta10.setText("修改操作成功" + i + "条");

}

public void createGUI() {

JFrame jf = new JFrame("员工信息管理系统");

jf.setLayout(new GridLayout(2, 1));

// jf.setLayout(new GridLayout(10,2));

JPanel jp00 = new JPanel(new GridLayout(5, 4));

JPanel jp1 = new JPanel();

JButton jb11 = new JButton("查询");

jb11.addActionListener(this);

JButton jb12 = new JButton("增加");

jb12.addActionListener(this);

jp1.add(jb11);

jp1.add(jb12);

jp00.add(jp1);

JPanel jp11 = new JPanel();

JButton jb111 = new JButton("修改");

jb111.addActionListener(this);

JButton jb112 = new JButton("撤除");

jb112.addActionListener(this);

jp11.add(jb111);

jp11.add(jb112);

jp00.add(jp11);

JPanel jp2 = new JPanel();

JLabel jl2 = new JLabel("中 文 名 * ");

jp2.add(jl2);

jp2.add(jtf2);

jp00.add(jp2);

JPanel jp3 = new JPanel();

JLabel jl3 = new JLabel("工 号 ");

jp3.add(jl3);

jp3.add(jtf3);

jp00.add(jp3);

JPanel jp4 = new JPanel();

JLabel jl4 = new JLabel("EngName*");

jp4.add(jl4);

jp4.add(jtf4);

jp00.add(jp4);

JPanel jp5 = new JPanel();

JLabel jl5 = new JLabel("UNIT ");

jp5.add(jl5);

jp5.add(jtf5);

jp00.add(jp5);

JPanel jp6 = new JPanel();

JLabel jl6 = new JLabel("TEAM* ");

jp6.add(jl6);

jp6.add(jtf6);

jp00.add(jp6);

JPanel jp7 = new JPanel();

JLabel jl7 = new JLabel("Phone* ");

jp7.add(jl7);

jp7.add(jtf7);

jp00.add(jp7);

JPanel jp8 = new JPanel();

JLabel jl8 = new JLabel("区域 ");

jp8.add(jl8);

jp8.add(jtf8);

jp00.add(jp8);

JPanel jp9 = new JPanel();

JLabel jl9 = new JLabel("公交站 ");

jp9.add(jl9);

jp9.add(jtf9);

jp00.add(jp9);

jf.add(jp00);

JPanel jp01 = new JPanel();

jta10.setText("--用户使用手册-- \n1、查询：选择一个字段，如 EngName 在文本框中输入相应内容，点击查询\n2、增加：在各个文本框中输入相应内容后，点击增加。\n3、修改：先查询到你要的记录，在更改相应内容，点击修改。\n4、撤除：类似于修改操作");

jp01.add(jta10);

jf.add(jp01);

jf.setSize(700, 500);

jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

jf.setVisible(true);

}

public static void main(String[] args) {

new EmpManageSys();

}

}

import java.net.Inet4Address;

import java.net.InetAddress;

import java.net.NetworkInterface;

import java.util.Enumeration;

/**

* 此类用于取出本机的IP地址

* 

* @author http://.javaweb.cc
* @date 2010-05-20

* @time 上午10:41:13

*/

public class IPAddrFetcher{

public String getIPInfo(){

StringBuilder sb=new StringBuilder();

try{

Enumeration<NetworkInterface> interfaces=NetworkInterface.getNetworkInterfaces();

while(interfaces.hasMoreElements()){

NetworkInterface ni=interfaces.nextElement();

sb.append("Interface "+ni.getName()+":\r\n");

Enumeration<InetAddress> inetAddresses=ni.getInetAddresses();

while(inetAddresses.hasMoreElements()){

InetAddress address=inetAddresses.nextElement();

sb.append("Address");

if(address instanceof Inet4Address){

sb.append("(v4)");

}

else{

sb.append("(v6)");

}

sb.append(":address="+address.getHostAddress()+" name="+address.getHostName()+"\r\n");

}

}

}catch(Exception ex){

ex.printStackTrace();

}

return sb.toString();

}

public static void main(String[] args){

IPAddrFetcher iPAddrFetcher=new IPAddrFetcher();

System.out.println(iPAddrFetcher.getIPInfo());

}

}

 

运行结果：

C:\java>java IPAddrFetcher

Interface lo:

Address(v4):address=127.0.0.1 name=localhost

Interface eth0:

Address(v4):address=192.168.1.102 name=javaweb.cc