java上机2参考代码.doc

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1、上机实践2输入输出流实验1学读汉字1．答案：【代码1】：newFileReader(file);【代码2】：newBufferedReader(inOne);【代码3】：inTwo.readLine();【代码4】：newFileReader(helpFile);【代码5】：newBufferedReader(inOne);2．模板代码ChineseCharacters.javaimportjava.io.*;importjava.util.StringTokenizer;publicclassChineseCharacters{publicStri

2、ngBuffergetChinesecharacters(Filefile){StringBufferhanzi=newStringBuffer();try{FileReaderinOne=newFileReader(file);//创建指向文件f的inOne的对象BufferedReaderinTwo=newBufferedReader(inOne);//创建指向文件inOne的inTwo的对象Strings=null;inti=0;while((s=inTwo.readLine())!=null)//inTwo读取一行{StringTokeniz

3、ertokenizer=newStringTokenizer(s,",''");while(tokenizer.hasMoreTokens()){hanzi.append(tokenizer.nextToken());}}}catch(Exceptione){}returnhanzi;}}StudyFrame.javaimportjava.awt.*;importjava.awt.event.*;importjava.io.*;importjavax.sound.sampled.*;publicclassStudyFrameextendsFram

4、eimplementsItemListener,ActionListener,Runnable{ChineseCharacterschinese;Choicechoice;ButtongetCharacters,voiceCharacters;LabelshowCharacters;StringBuffertrainedChinese=null;Clipclip=null;ThreadvoiceThread;intk=0;PanelpCenter;CardLayoutmycard;TextAreatextHelp;MenuBarmenubar;Men

5、umenu;MenuItemhelp;publicStudyFrame(){chinese=newChineseCharacters();choice=newChoice();choice.add("training1.txt");choice.add("training2.txt");choice.add("training3.txt");showCharacters=newLabel("",Label.CENTER);showCharacters.setFont(newFont("宋体",Font.BOLD,72));showCharacters

6、.setBackground(Color.green);getCharacters=newButton("下一个汉字");voiceCharacters=newButton("发音");voiceThread=newThread(this);choice.addItemListener(this);voiceCharacters.addActionListener(this);getCharacters.addActionListener(this);PanelpNorth=newPanel();pNorth.add(newLabel("选择一个汉字

7、字符组成的文件"));pNorth.add(choice);add(pNorth,BorderLayout.NORTH);PanelpSouth=newPanel();pSouth.add(getCharacters);pSouth.add(voiceCharacters);add(pSouth,BorderLayout.SOUTH);pCenter=newPanel();mycard=newCardLayout();pCenter.setLayout(mycard);textHelp=newTextArea();pCenter.add("hanzi

8、",showCharacters);pCenter.add("help",textHelp);add(pCe