java输入输出流.doc

分析成绩单：AnalysisResult.javaimport java.io.*;import java.util.*;public class AnalysisResult public static void main (String args) File fRead = new File(score.txt); /新建一个score.txt文档，父类文件夹选为自己的项目 File fWriter =new File(socreAnalysis.txt); /新建一个socreAnalysis.txt文档，父类文件夹选为自己的项目 try Writer out =new FileWriter(fWriter,true);/以尾加方式创建指向文件fWrite的out流BufferedWriter bufferWrite=new BufferedWriter(out);Reader in =new FileReader(fRead);BufferedReader bufferRead =new BufferedReader(in);String str =null;while(str=bufferRead.readLine()!=null)double totalScore=Fenxi.getTotalScore(str);str =str+ 总分:+totalScore;System.out.println(str);bufferWrite.write(str);bufferWrite.newLine();bufferRead.close();bufferWrite.close();catch (IOException e)System.out.println(e.toString(); Fenxi.javaimport java.util.*;public class Fenxi public static double getTotalScore(String s) Scanner scanner =new Scanner(s); scanner.useDelimiter(0123456789.+); double totalScore=0; while (scanner.hasNext() try double score =scanner.nextDouble(); totalScore=totalScore+score; catch (InputMismatchException exp) String t =scanner.next(); return totalScore; 学习读写汉字：ChineseCharacters.javaimport java.io.*;import java.util.StringTokenizer;public class ChineseCharacters public StringBuffer getChinesecharacters(File file) StringBuffer hanzi=new StringBuffer(); try FileReader inOne=new FileReader(file); /创建指向文件f的inOne 的对象 BufferedReader inTwo=new BufferedReader(inOne); /创建指向文件inOne的inTwo 的对象 String s=null; int i=0; while(s=inTwo.readLine()!=null) /inTwo读取一行 StringTokenizer tokenizer=new StringTokenizer(s, ,n ); while(tokenizer.hasMoreTokens() hanzi.append(tokenizer.nextToken(); catch(Exception e) return hanzi; StudyFrame.javaimport java.awt.*;import java.awt.event.*;import java.io.*;import javax.sound.sampled.*;public class StudyFrame extends Frame implements ItemListener,ActionListener,Runnable ChineseCharacters chinese; Choice choice; Button getCharacters,voiceCharacters; Label showCharacters; StringBuffer trainedChinese=null; Clip clip=null; /本例要求读出的汉字可以发音 Thread voiceThread; int k=0; Panel pCenter; CardLayout mycard; TextArea textHelp; MenuBar menubar; Menu menu; MenuItem help; public StudyFrame() chinese=new ChineseCharacters(); choice=new Choice(); choice.add(training1.txt); choice.add(training2.txt); /新建三个training.txt文档，父类文件夹选为自己的项目 choice.add(training3.txt); showCharacters=new Label(,Label.CENTER); showCharacters.setFont(new Font(宋体,Font.BOLD,72); showCharacters.setBackground(Color.pink); /这块的背景颜色自己改 getCharacters=new Button(下一个汉字); voiceCharacters=new Button(发音); voiceThread=new Thread(this); choice.addItemListener(this); voiceCharacters.addActionListener(this); getCharacters.addActionListener(this); Panel pNorth=new Panel(); pNorth.add(new Label(选择一个汉字字符组成的文件); pNorth.add(choice); add(pNorth,BorderLayout.NORTH); Panel pSouth=new Panel(); pSouth.add(getCharacters); pSouth.add(voiceCharacters); add(pSouth,BorderLayout.SOUTH); pCenter=new Panel(); mycard=new CardLayout(); pCenter.setLayout(mycard); textHelp=new TextArea(); pCenter.add(hanzi,showCharacters); pCenter.add(help,textHelp); add(pCenter,BorderLayout.CENTER); menubar=new MenuBar(); menu=new Menu(帮助); help=new MenuItem(关于学汉字); help.addActionListener(this); menu.add(help); menubar.add(menu); setMenuBar(menubar); setSize(350,220); setVisible(true); addWindowListener(new WindowAdapter() public void windowClosing(WindowEvent e) System.exit(0); ); validate(); public void itemStateChanged(ItemEvent e) String fileName=choice.getSelectedItem(); File file=new File(fileName); trainedChinese=chinese.getChinesecharacters(file); k=0; mycard.show(pCenter,hanzi) ; public void actionPerformed(ActionEvent e) if(e.getSource()=getCharacters) if(trainedChinese!=null) char c=trainedChinese.charAt(k); k+; if(k=trainedChinese.length() k=0; showCharacters.setText(+c); else showCharacters.setText(请选择一个汉字字符文件); if(e.getSource()=voiceCharacters) if(!(voiceThread.isAlive() voiceThread=new Thread(this); try voiceThread.start(); catch(Exception exp) if(e.getSource()=help) mycard.show(pCenter,help) ; try File helpFile=new File(help.txt); FileReader inOne=new FileReader(helpFile); /创建指向文件helpFile的inOne 的对象 BufferedReader inTwo=new BufferedReader(inOne); /创建指向文件inOne的inTwo 的对象 String s=null; while(s=inTwo.readLine()!=null) textHelp.append(s+n); inOne.close(); inTwo.close(); catch(IOException exp) public void run() voiceCharacters.setEnabled(false); try if(clip!=null) clip.close(); clip=AudioSystem.getClip(); File voiceFile=new File(showCharacters.getText().trim()+.wav); clip.open(AudioSystem.getAudioInputStream(voiceFile); catch(Exception exp) clip.start(); voiceCharacters.setEnabled(true); StudyMainClass.javapublic class StudyMainClass public static void main(String args) new StudyFrame(); 统计英文单词：OutputWordMess.javaimport java.util.*;public class OutputWordMess public static void main(String args) Vector allWord,noSameWord; WordStatistic statistic = new WordStatistic(); statistic.setFileName(hello.txt); statistic.wordStatistic(); allWord=statistic.getAllWord(); noSameWord=statistic.getNoSameWord(); System.out.println(共有+allWord.size()+个英文单词); System.out.println(有+noSameWord.size()+个互不相同的英文单词); System.out.println(按出现频率排列:); int count=new intnoSameWord.size(); for (int i=0;inoSameWord.size();i+) String s1 = noSameWord.elementAt(i); for(int j=0;jallWord.size();j+) String s2=allWord.elementAt(j); if (s1.equals(s2) counti+; for (int m=0;mnoSameWord.size();m+)for (int n=m+1;ncountn) String temp=noSameWord.elementAt(n); noSameWord.setElementAt(noSameWord.elementAt(n),n); int t=countn; countn=countn; countn=t; for(int m=0;mnoSameWord.size();m+) double frequency=(1.0*countm)/allWord.size(); System.out.printf(%s:%-7.3f,noSameWord.elementAt(m),frequency); WordStatistic.javaimport java.io.*;import java.util.*;public class WordStatistic Vector allWord,noSameWord;File file = new File(hello.txt); /新建一个hello.txt Scanner sc