使用第三方庫poi就可以實(shí)現(xiàn)excel的讀取，讀入內(nèi)存后，編寫一個(gè)函數(shù)，傳入十進(jìn)制然后轉(zhuǎn)為十六進(jìn)制即可。。
創(chuàng)新互聯(lián)專業(yè)為企業(yè)提供南樂網(wǎng)站建設(shè)、南樂做網(wǎng)站、南樂網(wǎng)站設(shè)計(jì)、南樂網(wǎng)站制作等企業(yè)網(wǎng)站建設(shè)、網(wǎng)頁設(shè)計(jì)與制作、南樂企業(yè)網(wǎng)站模板建站服務(wù)，十載南樂做網(wǎng)站經(jīng)驗(yàn)，不只是建網(wǎng)站，更提供有價(jià)值的思路和整體網(wǎng)絡(luò)服務(wù)。
給你個(gè)做好了的Java的源程序的記事本，自己看看就行了的，不怎么難的···
import java.awt.*;
import java.awt.event.*;
import java.io.*;
import javax.swing.*;
public class MyNotepad implements ActionListener{
private JFrame frame=new JFrame("新記事本");
private JTextArea jta=new JTextArea();
private String result="";
private boolean flag=true;
private File f;
private JButton jb=new JButton("開始");
private JTextField jtf=new JTextField(15);
private JTextField jt=new JTextField(15);
private JButton jbt=new JButton("替換為");
private JButton jba=new JButton("全部替換");
private Icon ic=new ImageIcon("D:\\java課堂筆記\\GUI\\11.gif");
private String value;
private int start=0;
private JFrame jf=new JFrame("查找");
private JFrame jfc=new JFrame("替換");
@Override
public void actionPerformed(ActionEvent e) {
String comm=e.getActionCommand();
if("新建".equals(comm)){
if(!(frame.getTitle().equals("新記事本"))){
if(!flag){
write();
newNew();
}else{
JFileChooser jfc=new JFileChooser("D:\\java課堂筆記");
int returnVal = jfc.showDialog(null,"保存為");
if(returnVal == JFileChooser.APPROVE_OPTION) {//選擇文件后再執(zhí)行下面的語句，保證了程序的健壯性
f=jfc.getSelectedFile();
flag=false;
write();
}
}
}else if(!(jta.getText().isEmpty())){
JFileChooser jfc=new JFileChooser("D:\\java課堂筆記");
int returnVal = jfc.showDialog(null,"保存為");
if(returnVal == JFileChooser.APPROVE_OPTION) {//選擇文件后再執(zhí)行下面的語句，保證了程序的健壯性
f=jfc.getSelectedFile();
flag=false;
write();
newNew();
}
}else{
newNew();
}
}else if("打開".equals(comm)){
JFileChooser jfc=new JFileChooser("D:\\java課堂筆記");
jfc.setDialogType(JFileChooser.OPEN_DIALOG);
int returnVal = jfc.showOpenDialog(null);
if(returnVal == JFileChooser.APPROVE_OPTION) {//選擇文件后再執(zhí)行下面的語句，保證了程序的健壯性
f=jfc.getSelectedFile();
frame.setTitle(f.getName());
result=read();
flag=false;
value=result;
jta.setText(result);
}
}else if("保存".equals(comm)){
JFileChooser jfc=new JFileChooser("D:\\java課堂筆記");
if(flag){
int returnVal = jfc.showDialog(null,"保存為");
if(returnVal == JFileChooser.APPROVE_OPTION) {//選擇文件后再執(zhí)行下面的語句，保證了程序的健壯性
f=jfc.getSelectedFile();
flag=false;
write();
}
}else{
write();
}
}else if("另存".equals(comm)){
JFileChooser jfc=new JFileChooser("D:\\java課堂筆記");
int returnVal = jfc.showDialog(null,"另存");
if(returnVal == JFileChooser.APPROVE_OPTION) {//選擇文件后再執(zhí)行下面的語句，保證了程序的健壯性
f=jfc.getSelectedFile();
write();
}
}else if("退出".equals(comm)){
System.exit(0);
}else if("撤銷".equals(comm)){
jta.setText(value);
}else if("剪切".equals(comm)){
value=jta.getText();
jta.cut();
}else if("復(fù)制".equals(comm)){
jta.copy();
}else if("粘貼".equals(comm)){
value=jta.getText();
jta.paste();
}else if("刪除".equals(comm)){
value=jta.getText();
jta.replaceSelection(null);
}else if("全選".equals(comm)){
jta.selectAll();
}else if("查找".equals(comm)){
value=jta.getText();
jf.add(jtf,BorderLayout.CENTER);
jf.add(jb,BorderLayout.SOUTH);
jf.setLocation(300,300);
jf.pack();
jf.setVisible(true);
jf.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
}else if("替換".equals(comm)){
value=jta.getText();
GridLayout gl=new GridLayout(3,3);
JLabel jl1=new JLabel("查找內(nèi)容:");
JLabel jl2=new JLabel("替換為:");
jfc.setLayout(gl);
jfc.add(jl1);
jfc.add(jtf);
jfc.add(jb);
jfc.add(jl2);
jfc.add(jt);
jfc.add(jbt);
JLabel jl3=new JLabel();
JLabel jl4=new JLabel();
jfc.add(jl3);
jfc.add(jl4);
jfc.add(jba);
jfc.setLocation(300,300);
jfc.pack();
jfc.setVisible(true);
jfc.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
}else if("版本".equals(comm)){
JDialog jd=new JDialog(frame,"關(guān)于對話框");
jd.setSize(200,200);
JLabel l=new JLabel("哈哈哈哈哈哈哈哈哈哈呵呵呵呵呵呵呵呵呵呵呵呵呵");
jd.add(l,BorderLayout.CENTER);
jd.setLocation(100,200);
jd.setSize(300,300);
jd.setVisible(true);
// jd.pack();
jd.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);
}else if("開始".equals(comm)||"下一個(gè)".equals(comm)){
String temp=jtf.getText();
int s=value.indexOf(temp,start);
if(value.indexOf(temp,start)!=-1){
jta.setSelectionStart(s);
jta.setSelectionEnd(s+temp.length());
jta.setSelectedTextColor(Color.GREEN);
start=s+1;
jb.setText("下一個(gè)");
// value=value.substring(s+temp.length());//不能截取字串
}else {
JOptionPane.showMessageDialog(jf, "查找完畢!", "提示", 0, ic);
jf.dispose();
}
}else if("替換為".equals(comm)){
String temp=jtf.getText();
int s=value.indexOf(temp,start);
if(value.indexOf(temp,start)!=-1){
jta.setSelectionStart(s);
jta.setSelectionEnd(s+temp.length());
jta.setSelectedTextColor(Color.GREEN);
start=s+1;
jta.replaceSelection(jt.getText());
}else {
JOptionPane.showMessageDialog(jf, "查找完畢!", "提示", 0, ic);
jf.dispose();
}
}else if("全部替換".equals(comm)){
String temp=jta.getText();
temp=temp.replaceAll(jtf.getText(), jt.getText());
jta.setText(temp);
}
}
public String read(){
String temp="";
try {
FileInputStream fis = new FileInputStream(f.getAbsolutePath());
byte[] b=new byte[1024];
while(true){
int num=fis.read(b);
if(num==-1)break;
temp=temp+new String(b,0,num);
}
fis.close();
} catch (Exception e1) {
e1.printStackTrace();
}
return temp;
}
public void write(){
try {
FileOutputStream fos=new FileOutputStream(f);
fos.write(jta.getText().getBytes());
fos.close();
} catch (Exception e) {
e.printStackTrace();
}
}
public void newNew(){
frame.dispose();
new MyNotepad();
flag=true;
}
public MyNotepad(){
JMenuBar jmb=new JMenuBar();
String[] menuLab={"文件","編輯","幫助"};
String[][] menuItemLab={{"新建","打開","保存","另存","退出"},
{"撤銷","剪切","復(fù)制","粘貼","刪除","全選","查找","替換"},
{"版本"}};
for(int i=0;imenuLab.length;i++){
JMenu menu=new JMenu(menuLab[i]);
jmb.add(menu);
for(int j=0;jmenuItemLab[i].length;j++){
JMenuItem jmi=new JMenuItem(menuItemLab[i][j]);
menu.add(jmi);
jmi.addActionListener(this);
}
}
frame.setJMenuBar(jmb);
jta.setLineWrap(true);//自動換行
JScrollPane jsp=new JScrollPane(jta);//滾動窗口面板
frame.add(jsp);
jb.addActionListener(this);
jbt.addActionListener(this);
jba.addActionListener(this);
frame.setLocation(200,50);
frame.setSize(620,660);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
public static void main(String[] args) {
new MyNotepad();
}
}
項(xiàng)目結(jié)構(gòu)如下：
代碼如下
package?main;
public?class?Course?{
private?String?classNum;
private?String?credit;
private?String?startClassDate;
private?String?endClassDate;
private?String?teacher;
private?String?assessment;
public?String?getClassNum()?{
return?classNum;
}
public?void?setClassNum(String?classNum)?{
this.classNum?=?classNum;
}
public?String?getCredit()?{
return?credit;
}
public?void?setCredit(String?credit)?{
this.credit?=?credit;
}
public?String?getStartClassDate()?{
return?startClassDate;
}
public?void?setStartClassDate(String?startClassDate)?{
this.startClassDate?=?startClassDate;
}
public?String?getEndClassDate()?{
return?endClassDate;
}
public?void?setEndClassDate(String?endClassDate)?{
this.endClassDate?=?endClassDate;
}
public?String?getTeacher()?{
return?teacher;
}
public?void?setTeacher(String?teacher)?{
this.teacher?=?teacher;
}
public?String?getAssessment()?{
return?assessment;
}
public?void?setAssessment(String?assessment)?{
this.assessment?=?assessment;
}
@Override
public?String?toString()?{
return?"?課程號:"?+?classNum?+?",?學(xué)分:"?+?credit
+?",?上課時(shí)間:"?+?startClassDate?+?",?下課時(shí)間:"
+?endClassDate?+?",?教師:"?+?teacher?+?",??考核方式:"
+?assessment?+?"";
}
}
package?main;
import?java.io.BufferedInputStream;
import?java.io.BufferedReader;
import?java.io.File;
import?java.io.FileInputStream;
import?java.io.InputStreamReader;
import?java.math.BigDecimal;
import?java.util.ArrayList;
import?java.util.Arrays;
import?java.util.List;
import?java.util.Scanner;
public?class?Main?{
public?static?void?main(String[]?args)?throws?Exception?{
Scanner?sc?=?new?Scanner(System.in);???
System.out.println("創(chuàng)建學(xué)生請輸入姓名:");??
Student?stu1?=?new?Student();
stu1.setName(sc.nextLine());
Scanner?sc1?=?new?Scanner(System.in);???
System.out.println("創(chuàng)建學(xué)生請輸入學(xué)號:");
stu1.setNumber(sc1.nextLine());
System.out.println("請選擇課程,課程如下:");
ListCourse?list2?=?new?ArrayListCourse();
stu1.setCourses(list2);
ListCourse?list?=?readTxt();
for?(Course?course?:?list)?{
System.out.println(course.toString());
}
for?(int?i?=?1;?i??5;?i++)?{
System.out.println("請輸入第"+i+"個(gè)課程號:");
//輸入第一個(gè)課程號
list2?=?handleClass(list,?list2);
System.err.println("已選擇成功!");
list?=?notSelectClass(list,?list2);
System.out.println("請選擇課程,課程如下:");
if(i==4){
break;
}
for?(Course?course?:?list)?{
System.out.println(course.toString());
}
}
System.out.println("課程已選完!結(jié)果如下:");
System.err.println("學(xué)生:"+stu1.getName()+":");
for?(Course?course?:?list2)?{
System.err.println(course.toString());
}
}
/**
*?
*?查看未選擇可選課程
*?@param?list?全部可選課程
*?@param?list2?已選課程
*?@return
*/
private?static?ListCourse?notSelectClass(ListCourse?list,ListCourse?list2){
for?(int?i?=?0;?i??list.size();?i++)?{
for?(Course?course?:?list2)?{
//把已選課程剔除
if(course.getClassNum().equals(list.get(i).getClassNum())){
list.remove(i);
continue;
}
//把時(shí)間重合課程剔除??startdate1?=enddate2?and?enddate1=startdate2
if(daYuDengYu(course.getEndClassDate(),list.get(i).getStartClassDate())daYuDengYu(list.get(i).getEndClassDate(),?course.getStartClassDate())){
list.remove(i);
}
}
}
return?list;
}
public?static?boolean?daYuDengYu(String?first,?String?second){
BigDecimal?bd1?=?new?BigDecimal(first);
BigDecimal?bd2?=?new?BigDecimal(second);
return?bd1.compareTo(bd2)=0?true:false;
}
/**
*?處理選擇課程
*?@param?list
*?@param?list2
*?@return
*/
private?static?ListCourse?handleClass(ListCourse?list,ListCourse?list2){
while?(true)?{
Scanner?sssi?=?new?Scanner(System.in);
String?num?=?sssi.nextLine().trim();
for?(Course?course?:?list)?{
if(num.equals(course.getClassNum())){
list2.add(course);
return?list2;
}
}
System.out.println("課程號輸入錯(cuò)誤,請重新輸入:");
}
}
/**
*?讀取txt獲取課程??每個(gè)課程按;分割每個(gè)屬性按,分割
*?@return
*?@throws?Exception
*/
private?static?ListCourse?readTxt()?throws?Exception{
/*?讀入TXT文件?*/??
String?pathname?=?Main.class.getResource("/").toString();
pathname?=?pathname.substring(6,?pathname.length()-4)+"/src/classs/class.txt";?//獲取絕對路徑
File?filename?=?new?File(pathname);?//?要讀取以上路徑的txt文件??
ListCourse?list?=?new?ArrayListCourse();
BufferedInputStream?bis?=?new?BufferedInputStream(new?FileInputStream(filename));??
//讀取文件內(nèi)容??
byte[]?b?=?new?byte[bis.available()];??
bis.read(b);??
if(b!=null){
String?[]?strs=?new?String(b).split(";");
if?(strs==null)?{
return?null;
}
for?(String?string?:?strs)?{
String[]?str?=?string.split(",");
Course?course?=?new?Course();
course.setAssessment(str[5].trim());
course.setClassNum(str[0].trim());
course.setCredit(str[1].trim());
course.setEndClassDate(str[3].trim());
course.setStartClassDate(str[2].trim());
course.setTeacher(str[4].trim());
list.add(course);
}
}
bis.close();//關(guān)閉流(關(guān)閉bis就可以了)??
return?list;
}
}
package?main;
import?java.util.List;
public?class?Student?{
private?String?name;
private?String?number;
private?ListCourse?courses;
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?ListCourse?getCourses()?{
return?courses;
}
public?void?setCourses(ListCourse?courses)?{
this.courses?=?courses;
}
}
001,1,7,8,Joyce,assignment;
002,1,8,9,Joyce,assignment;
003,1,12,15,Joyce,assignment;
004,1,18,19,Joyce,assignment;
005,1,7,8,LI,assignment;
006,1,8,9,LI,assignment;
007,1,12,15,LI,assignment;
008,1,18,19,LI,assignment;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.util.*;
public class GreedSnake implements KeyListener{
JFrame mainFrame;
Canvas paintCanvas;
JLabel labelScore;
SnakeModel snakeModel = null;
public static final int canvasWidth = 200;
public static final int canvasHeight = 300;
public static final int nodeWidth = 10;
public static final int nodeHeight = 10;
public GreedSnake() {
mainFrame = new JFrame("GreedSnake");
Container cp = mainFrame.getContentPane();
labelScore = new JLabel("Score:");
cp.add(labelScore, BorderLayout.NORTH);
paintCanvas = new Canvas();
paintCanvas.setSize(canvasWidth+1,canvasHeight+1);
paintCanvas.addKeyListener(this);
cp.add(paintCanvas, BorderLayout.CENTER);
JPanel panelButtom = new JPanel();
panelButtom.setLayout(new BorderLayout());
JLabel labelHelp;
labelHelp = new JLabel("PageUp, PageDown for speed;", JLabel.CENTER);
panelButtom.add(labelHelp, BorderLayout.NORTH);
labelHelp = new JLabel("ENTER or R or S for start;", JLabel.CENTER);
panelButtom.add(labelHelp, BorderLayout.CENTER);
labelHelp = new JLabel("SPACE or P for pause",JLabel.CENTER);
panelButtom.add(labelHelp, BorderLayout.SOUTH);
cp.add(panelButtom,BorderLayout.SOUTH);
mainFrame.addKeyListener(this);
mainFrame.pack();
mainFrame.setResizable(false);
mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
mainFrame.setVisible(true);
begin();
}
public void keyPressed(KeyEvent e){
int keyCode = e.getKeyCode();
if (snakeModel.running)
switch(keyCode){
case KeyEvent.VK_UP:
snakeModel.changeDirection(SnakeModel.UP);
break;
case KeyEvent.VK_DOWN:
snakeModel.changeDirection(SnakeModel.DOWN);
break;
case KeyEvent.VK_LEFT:
snakeModel.changeDirection(SnakeModel.LEFT);
break;
case KeyEvent.VK_RIGHT:
snakeModel.changeDirection(SnakeModel.RIGHT);
break;
case KeyEvent.VK_ADD:
case KeyEvent.VK_PAGE_UP:
snakeModel.speedUp();
break;
case KeyEvent.VK_SUBTRACT:
case KeyEvent.VK_PAGE_DOWN:
snakeModel.speedDown();
break;
case KeyEvent.VK_SPACE:
case KeyEvent.VK_P:
snakeModel.changePauseState();
break;
default:
}
if (keyCode == KeyEvent.VK_R ||
keyCode == KeyEvent.VK_S ||
keyCode == KeyEvent.VK_ENTER){
snakeModel.running = false;
begin();
}
}
public void keyReleased(KeyEvent e){
}
public void keyTyped(KeyEvent e){
}
void repaint(){
Graphics g = paintCanvas.getGraphics();
//draw background
g.setColor(Color.WHITE);
g.fillRect(0,0,canvasWidth,canvasHeight);
// draw the snake
g.setColor(Color.BLACK);
LinkedList na = snakeModel.nodeArray;
Iterator it = na.iterator();
while(it.hasNext()){
Node n = (Node)it.next();
drawNode(g,n);
}
// draw the food
g.setColor(Color.RED);
Node n = snakeModel.food;
drawNode(g,n);
updateScore();
}
private void drawNode(Graphics g, Node n){
g.fillRect(n.x*nodeWidth,
n.y*nodeHeight,
nodeWidth-1,
nodeHeight-1);
}
public void updateScore(){
String s = "Score: " + snakeModel.score;
labelScore.setText(s);
}
void begin(){
if (snakeModel == null || !snakeModel.running){
snakeModel = new SnakeModel(this,
canvasWidth/nodeWidth,
canvasHeight/nodeHeight);
(new Thread(snakeModel)).start();
}
}
public static void main(String[] args){
GreedSnake gs = new GreedSnake();
}
}
///////////////////////////////////////////////////
// 文件2
///////////////////////////////////////////////////
import java.util.*;
import javax.swing.*;
class SnakeModel implements Runnable{
GreedSnake gs;
boolean[][] matrix;
LinkedList nodeArray = new LinkedList();
Node food;
int maxX;
int maxY;
int direction = 2;
boolean running = false;
int timeInterval = 200;
double speedChangeRate = 0.75;
boolean paused = false;
int score = 0;
int countMove = 0;
// UP and DOWN should be even
// RIGHT and LEFT should be odd
public static final int UP = 2;
public static final int DOWN = 4;
public static final int LEFT = 1;
public static final int RIGHT = 3;
public SnakeModel(GreedSnake gs, int maxX, int maxY){
this.gs = gs;
this.maxX = maxX;
this.maxY = maxY;
// initial matirx
matrix = new boolean[maxX][];
for(int i=0; imaxX; ++i){
matrix = new boolean[maxY];
Arrays.fill(matrix,false);
}
// initial the snake
int initArrayLength = maxX 20 ? 10 : maxX/2;
for(int i = 0; i initArrayLength; ++i){
int x = maxX/2+i;
int y = maxY/2;
nodeArray.addLast(new Node(x, y));
matrix[x][y] = true;
}
food = createFood();
matrix[food.x][food.y] = true;
}
public void changeDirection(int newDirection){
if (direction % 2 != newDirection % 2){
direction = newDirection;
}
}
public boolean moveOn(){
Node n = (Node)nodeArray.getFirst();
int x = n.x;
int y = n.y;
switch(direction){
case UP:
y--;
break;
case DOWN:
y++;
break;
case LEFT:
x--;
break;
case RIGHT:
x++;
break;
}
if ((0 = x x maxX) (0 = y y maxY)){
if (matrix[x][y]){
if(x == food.x y == food.y){
nodeArray.addFirst(food);
int scoreGet = (10000 - 200 * countMove) / timeInterval;
score += scoreGet 0? scoreGet : 10;
countMove = 0;
food = createFood();
matrix[food.x][food.y] = true;
return true;
}
else
return false;
}
else{
nodeArray.addFirst(new Node(x,y));
matrix[x][y] = true;
n = (Node)nodeArray.removeLast();
matrix[n.x][n.y] = false;
countMove++;
return true;
}
}
重慶分公司
重慶分公司
