创新素质拓展参考一综合性实验

基本技能 很高兴学习Java”和“Wearejavahobbyists”。public {publicstaticvoidmain(Stringargs[{【代码1】 //命令行窗口输出"你好，很高兴学习Java"Aa=newA();a}}{

void{【代码2 //命令行窗口输出"Wearejava}}知识点 文件保存到同一中，例如：C:\JavaDemo，然后编译o.java。模板1：publicclass{publicstaticvoidmain(Stringargs[{【代码1】 Aa=newA();Bb=newB();}}2publicclass{void{ //命令行窗口输出"Iam}}3publicclass{void{【代码3 //命令行窗口输出"Iam}}4publicclass{void{【代码4 //命令行窗口输出"Iam}}知识点 使用如下命令：C:\JavaDemo\javac*.java。 基本技能 ②掌握使用if…elseifpublicclass{publicstaticvoidmain(Stringargs[{intstartPosition=0,endPosition=0;charcStart='α',cEnd='ω';【代码1 //cStart做int型转换据运算，并将结果赋值给【代码2】 //cEnd做int型转换运算，并将结果赋值给endPositionSystem.out.println("希腊字母\'α\'在unicode表中的顺序位置:"+(int)cStart);for(int{char3】//i做char型转换运算，并将结果赋值给cSystem.out.print(""+c);}}} floatbyteint排列后得到的数和原数相同，例如、都是回文数。importjavax.swing.JOptionPane;publicclassNumber{publicstaticvoidmain(String{intStringstr=JOptionPane.showInputDialog("199999之间的数");if(1】判断number199999{ //计算number的最（万位 //计算number的千位【代码4】 //计算number的百位d3if(5】)//判断number5{if(6】判断number{}{}}elseif(7】)//判断number4{if(8】判断number{}{}}

elseif(9】)//判断number3{if(10】number{}{}}else{System.out.println(number+"2位数");{}{}}else{System.out.println(number+"1位数");}}{}}}

System.out.printf("\n%d199999之间知识点 importjavax.swing.JOptionPane;publicclassGuessNumber{publicstaticvoidmain(Stringargs[{intrealNumber=(int)(Mathrandom()*100)+1;intyourGuess=0;while(1】)//循环条件{if(2】{}elseif(3】{}}}}知识点 基本技能 class{doublesideA,sideB,sideC,area,length;booleanboo;publicTrangle(doublea,doubleb,double{1//参数a,b,c分别赋值给sideA,sideB,sideCif(2】)//a,b,c构成三角形的条件表达式{3//给boo}{}}

4】//给boodouble{5//方法体，要求计算出length}publicdouble{{}{}}

doublep=(sideA+sideB+sideC)/2.0;area=Math.sqrt(p*(p-sideA)*(p-sideB)*(p-sideC));returnarea;return0;publicvoidsetABC(doublea,doubleb,double{6//参数a,b,c分别赋值给sideA,sideB,sideCif(7】)//a,b,c构成三角形的条件表达式{8//给boo}{}}

9】//给boo}class{doubleabove,bottom,height,area;Lader(doublea,doubleb,doubleh){10】//方法体，将参数a,b,c分别赋值给}double{11//方法体，,要求计算出area}}class{doubleradius,area;Circle(doubler){12//}double{13//方法体，要求计算出area}double{14//getArea方法体的代码,要求计算出length}voidsetRadius(double{}double{return}}publicclass{publicstaticvoidmain(String{doublelength,area;Circlecircle=null;Laderlader;15//创建对象16//创建对象trangle17//创建对象18circle调用方法返回周长并赋值给length19circle调用方法返回面积并赋值给area20trangle调用方法返回周长并赋值给length21trangle调用方法返回面积并赋值给area22lader调用方法返回面积并赋值给area23trangle12,34,124trangle调用方法返回面积并赋值给area25trangle调用方法返回周长并赋值给length}}{ //一个float型实例变量【代码2】 //一个float型类变量b,即static变量bvoidsetA(floata){【代码3 //将参数a的值赋值给成员变量}voidsetB(float{【代码4 //将参数b的值赋值给成员变量}float{return}float{return}void{}staticvoid{}}publicclass{publicstaticvoidmain(String{【代码5 【代码6】 //通过类名调用方法inputB()Acat=newA();Adog=new //cat象调用方法setA(inta)将cat的成员a的值设置为 //cat调用方法setB(intb)将cat的成员b的值设置为 //dog象调用方法setA(inta)将dog的成员a的值设置为 //dog调用方法setB(intb)将dog的成员b的值设置为 //cat调用inputA() //cat调用inputB() //dog调用inputA() //dog调用inputB()}}知识 将模板1给出的Java源文件命名为SquareEquation.java，保存至c:\PackageDemo到的字节码文件到c:\PackageDemo\Demo中。注意：这里的文件夹packagepublicclass{doublea,b,c;doubleroot1,root2;booleanboo;publicSquareEquation(doublea,doubleb,double{{}{}}publicvoid{{System.out.println("2次方程");doubledisk=b*b-4*a*c;{}{}}{

}}publicvoidsetCoefficient(doublea,doubleb,double{{}{}}}

2JavaPackageDemo.javad:\PackageDemo2Javaclasspath。假设本地SDK的安装是E:\jdk1.8。set然后编译模板2给出的Java源程序。或用鼠标“我的电脑”，importDemo.*;classPackageDemo{publicstaticvoidmain(Stringargs[{SquareEquationequation=newSquareEquation(4,5,1);}} 基本技能 class publicstaticvoidmain(String Strings1=newString("youareastudent"),s2=newString("howareyou");if(1】)//使用equals方法判断s1与s2{System.out.println("s1与s2相同}{System.out.println("s1与s2不相同}Strings3=new //判断s3的前缀是否是“372901”{}Strings4=newString("你"),if(3】)//按着字典序s4s5{}{}

System.out.println("按字典序s4大于System.out.println("按字典序s4小于intStringposition=【代码5】//获取path中最后出 StringfileName=6】//path中“A.java”子字符串。System.out.println("c:\\java\\jsp\\A.java中含有的文件名:"+fileName);Strings6=newString("100"),s7=newintn1=【代码7】 //将s6转化成int型数据。doublen2=【代码8】//将s7转化成double型数据。doublem=n1+n2;Strings8=9//String调用valuOf(intn)mStringSystem.out.println("数字"+m+"有"+temp.length()+"位小数Strings9=newString("ABCDEF");chara[]=【代码10 //将s8存放到数组a中{}}} JavaString类练习题。相关知识请扫描如 请扫 Strings6=newStringstr1=newString(“ABCABC”),PublicstaticStringtoBinaryString(longi)PublicstaticStringtoOctalString(longi)PublicstaticStringtoHexString(longi)PublicstaticStringtoString(longi,intp)其中的toString(longi,intp)返回整数i的p进制表示。请在适当位置importimportjavax.swing.JOptionPane;publicclassDateExample{publicstaticvoidmain(Stringargs[{Stringstr=JOptionPane.showInputDialog("输入第一个日期的年份:");intyearOne=Integer.parseInt(str);intmonthOne=Integer.parseInt(str);intdayOne=Integer.parseInt(str);intyearTwo=Integer.parseInt(str);intmonthTwo=Integer.parseInt(str);intdayTwo=Integer.parseInt(str);Calendarcalendar=1】//【代码2 //将calendar的时间设置为yearOne年monthOnedayOnelongtimeOne=【代码3 【代码4 //将calendar的时间设置为yearTwo年monthTwolongtimeTwo=【代码5】 //calendar表示的时间转换成毫秒。Datedate1=【代码6】 //用timeOne做参数构造date1Datedate2=【代码7】 //用timeTwo做参数构造date2{}else{}else{}longdays=8】//计算两个日期相隔天数+yearTwo+"年"+monthTwo+"月"+dayTwo+"相隔"+days+"}}知识点 入框输入存款的数目和起止时间。实验 组件与处①学习处理ActionEvent其中Teacher类对象负责给出算术题目，并判断回答者的答案是否正确；}}publicclass{intnumberOne,numberTwo;Stringoperator="";booleanright;publicintgiveNumberOne(int{numberOne=(int)(Math.random()*n)+1;returnnumberOne;}publicintgiveNumberTwo(int{numberTwo=(int)(Math.random()*n)+1;returnnumberTwo;}publicString{doubled=Math.random();return}publicbooleangetRight(int{{if(answer==numberOne+numberTwo)}elseif(operator.equals("-{if(answer==numberOne-numberTwo)}return}importjava.awt.*;importjava.awt.event.*;publicclassComputerFrameextendsFrameimplements{TextFieldtextOne,textTwo,textResult;ButtongetProblem,giveAnwser;LabeloperatorLabel,message;Teacherteacher;ComputerFrame(Strings){teacher=newTeacher();setLayout(newFlowLayout());textOne=【代码1】 //创建textOne,其可见字符长是10textTwo=【代码2】 //创建textTwo,其可见字符长是10textResult=【代码3】//创建textResult,其可见字符长是10operatorLabel=newLabel("+");message=newLabel("你还没有回答呢");getProblem=newButton("获取题目");giveAnwser=newButton("确认答案");add(newLabel("="));【代码4】//将当前窗口为getProblem的ActionEvent监视【代码5】//将当前窗口为giveAnwser的ActionEvent监视【代码6】//将当前窗口为textResult的ActionEvent监视addWindowListener(new{publicvoidwindowClosing(WindowEvent{}}publicvoidactionPerformed(ActionEvent{if(【代码7】)//判断源是否是{intnumber1=teacher.giveNumberOne(100);intnumber2=teacher.giveNumberTwo(100);Stringoperator=teacher.givetOperator();}if(【代码8】)//判断源是否是{Stringanswer=textResult.getText();intresult=Integer.parseInt(answer);{message.setText}message.setText}}catch(NumberFormatException{message.setText(}}}}publicclass{publicstaticvoidmain(String{ComputerFrame}} Java importpublicclassSignalCanvasextends{intred,green,yellow,x,y,r;{}publicvoidsetRed(int }publicvoidsetGreen(int }publicvoidsetYellow(int }publicvoidsetPosition(intx,int{this.x=x;}publicvoidsetRadius(int{}publicvoidpaint(Graphics{{}else{}else{}}}importjava.awt.*;importjava.applet.*;importjava.awt.event.*;publicclassSignalFrameextendsFrameimplements{Choicechoice;SignalCanvassignal=null;StringitemRed="红灯",itemYellow="黄灯",itemGreen="绿灯";publicSignalFrame(){choice=【代码1 //创建【代码2 //创建choice添加【代码3 //创建choice添加【代码4 //创建choice添加【代码5】//将当前窗口为choice的ItemEvent监视try{Classcs=Class.forName("SignalCanvas");}catch(Exception Label("您还没有编 addWindowListener(new{publicvoidwindowClosing(WindowEvent{}}}publicvoiditemStateChanged(ItemEvent{Stringitem6】//choiceintw=signal.getBounds().width;inth=signal.getBounds().height;intm=Math.min(w,h);{{signal.setRed(1);}}else{{signal.setRed(0);}}else{{signal.setRed(0);}}}}publicclass{publicstaticvoidmain(String{SignalFrameframe;frame=newSignalFrame()}}知识点 pCenterpCenterpCenter中放置49个，用来显示日历。窗口的北面添加一个Panel容器pNorth，其布局是FlowLayoutpNorthnextMonthpreviousMonth显示当前月的上一月的日历。窗口的南面添加一个Panel容器pSouth，其布局是FlowLayout布局，pSouth中放置一个用来显示一些信息。importjava.util.Calendar;publicclassCalendarBean{Stringintyear=2005,month=0;publicvoidsetYear(intyear) }publicint return}publicvoidsetMonth(int this}publicint return}publicString[] Stringa[]=newCalendar日历=Calendar.getInstance();intday=0;{}{}{ } }}{a[i]=String.valueOf(n);}return}}importjava.util.*;importjava.awt.*;importjava.awt.event.*;importjava.applet.*;publicclassCalendarFrameextendsFrameimplements LabellabelDay[]=newLabel[42];ButtontitleName[]=newButton[7];","ButtonnextMonth,previousMonth;intyear=2017,month=10;CalendarBeancalendar;LabelshowMessage=newLabel("",Label.CENTER);publicCalendarFrame(){PanelpCenter=new1//将pCenter77列的GridLayoutfor(int{titleName[i]=new2】//pCenter添加组件titleName[i]}for(int{3】//pCenter添加组件labelDay[i]}calendar=new月}

for(inti=0;i<42;i++){}nextMonth=newButton("下月");previousMonth=newButton("上月");PanelpNorth=newPanel(),pSouth=newPanel();"+ScrollPanescrollPane=newScrollPane();4】//窗口添加scrollPane5】//窗口添加pNorth6】//窗口添加pSouthpublicvoidactionPerformed(ActionEvent{{month=month+1;for(inti=0;i<42;i++){}}else{month=month-1;for(inti=0;i<42;i++){}}"}

}publicclass{publicstaticvoidmain(String CalendarFrameframe=newCalendarFrame(); {}}}}知识点 Java开发GUI中经常要用的各种布局管理类。相关知识，请扫描二维实验 编写一个Java应用程序，在主线再创建一个Frame类型的窗口，在该窗口importpublicclassWordThreadextends charword;intk=19968;Labelcom;WordThread(Label }publicvoid{{try{【代码1】//调用sleep方法使得线断6000豪}catch(InterruptedExceptionif(k>=29968)}}}importjava.awt.*;importjava.awt.event.*;publicclassThreadFrameextendsFrameimplements{LabelButtonTextField【代码2】//用WordThread一个giveWord对intscore=0;{wordLabel=newLabel("",Label.CENTER);wordLabel.setFont(newFont("",Font.BOLD,72));button=newButton("开始");inputText=newTextField(3);scoreText=newTextField(5);3giveWordwordLabelWordThreadPanelsouthP=newPanel();southP.add(newLabel("输入所显示的汉字后回车:"));addWindowListener(new{publicvoidwindowClosing(WindowEvent{}}}publicvoidactionPerformed(ActionEvent{{if(!(【代码4】 //giveWord调用方法 giveWord=new} }catch(Exception}else{{}}}}publicclass{publicstaticvoidmain(String{new}}知识更改为线断time毫秒。在WordThread类增加publicvoidsetTime(intn)importpublicclassMycanvasextends{intColorpublicvoidsetColor(Color{}publicvoidsetR(int{}publicvoidpaint(Graphics{g.setColor(c);}publicint{return}}importpublicclassnetextendsPanelimplements{【代码1 //用Thread类一个moon对MycanvasdoublepointX[]=newpointY[]=newdouble[360intw=100,h=100;intradius=30;{setSize(w,h);yellowBall=newMycanvas();double for(int {pointX[i+1]=pointX[i]*Math.cos(angle)-Math.sin(angle)*pointY[i];}for(int{pointX[i]=pointX[i]+w/2; }2moon}publicvoid{try{moon}catch(Exception}publicvoidpaint(Graphics{g.setColor(Color.blue);}publicvoid{inti=0;{try{【代码3】//Thread类调用类方法sleep使得线断10豪秒}catch(InterruptedException}}}importjava.awt.*;importjava.awt.event.*;publicclassHaveThreadFrameextendsFrameimplements{【代码4 //用Thread类一个rotate对netdoublepointX[]=newdouble[360],pointY[]=newintwidth,height;intradius=120;{rotate=newThread(this);earth=newnet();doubleangle=1*Math.PI/180;for(inti=0;i<359;i++){pointX[i+1]=pointX[i]*Math.cos(angle)-Math.sin(angle)*pointY[i];}for(int{pointX[i]=pointX[i]+width/2;}addWindowListener(new{publicvoidwindowClosing(WindowEvent{}}【代码5 }publicvoid{inti=0;{try{Thread.sleep(100);}catch(InterruptedException}}publicvoidpaint(Graphics{g.setColor(Color.red);}}publicclass{publicstaticvoidmain(String{new}}知识importjava.awt.*;importjava.awt.event.*;publicclassMoveButtonextendsFrameimplements{【代码1】//用Thread类first,second两个线程对ButtonredButton,greenButton,startButton;intdistance=10;{2first3secondredButton=newButton();greenButton=newButton();startButton=newButton("start");addWindowListener(new{publicvoidwindowClosing(WindowEvent{}}}publicvoidactionPerformed(ActionEvent{try{}catch(Exception}publicvoid{{if4CPU try{}catch(Exception}if5CPU try{Thread.sleep(10);}catch(Exception}}}publicsynchronized ponent(Component{ try{wait();}catch(Exceptionexp){}{b.setLocation(10,60);}} try{wait();}catch(Exceptionexp){}{distance=10;}}}}publicclass{publicstaticvoidmain(String{new}}知识实验 需要自己制作相应文件比如training1.txt文件包含汉“你，那么在当前应用程序的运行中需要有“你.wav”格式文件。importimportjava.util.StringTokenizer;publicclassCharacters{publicStringBuffergetcharacters(File{StringBufferhanzi=newtry{FileReaderinOne1】finOneBufferedReaderinTwo2inOneinTwoStrings=null;inti=0; //inTwo一 StringTokenizertokenizer=newStringTokenizer(s,",'\n'");{}}}catch(Exceptione){}returnhanzi;}}importjava.awt.*;importjava.awt.event.*;importjava.io.*;import {Characters;Choicechoice;ButtongetCharacters,voiceCharacters;LabelshowCharacters;StringBuffertrained=null;Clipclip=null;ThreadvoiceThread;intk=0;PanelpCenter;CardLayoutmycard;TextAreatextHelp; ;Itemhelp;publicStudyFrame(){=newCharacters();choice=newChoice();showCharacters=newLabel("",Label.CENTER);showCharacters.setFont(newFont("宋体",Font.BOLD,72));getCharacters=newButton("下一个汉字");voiceCharacters=newButton("发音");voiceThread=newThread(this);PanelpNorth=newPanel();pNorth.add(newLabel("选择一个汉字字符组成的文件"));PanelpSouth=newPanel();pCenter=newPanel();mycard=newCardLayout();textHelp=newTextArea();bar=new=new("帮助help=newItem("关于学汉字"); addWindowListener(new{publicvoidwindowClosing(WindowEvent{}}publicvoiditemStateChanged(ItemEvent{StringfileName=choice.getSelectedItem();Filefile=newFile(fileName);mycard.show(pCenter,"hanzi")}publicvoidactionPerformed(ActionEvent{{if(trained{charc=trained.charAt(k);}showCharacters.setText}}{{voiceThread=new}try{}catch(Exception

{mycard.show(pCenter,"help")try{FilehelpFile=newFileReaderinOne4helpFileinOneBufferedReaderinTwo5inOneStrings=null;{}}catch(IOException}}publicvoid{voiceCharacters.setEnabled(false);try{if(clip!=null){}FilevoiceFile=new}catch(Exceptionexp){}}}publicclass{publicstaticvoidmain(String{new}}知识Java中的FileWriter类和FileReader类的一些基本用法，相关知识请扫：在StudyFrame类中增加一个按钮previousButton，单击该按钮可以前一个importjava.io.*;importjava.util.Vector;publicclass{VectorallWorsd,noSameWord;{allWorsd=newVector();noSameWord=newVector();}publicvoidwordStatistic(File{try{RandomAccessFileinOne=【代码1 inOneinTwo

RandomAccessFileinTwo=【代码2 longwordStarPostion=0,wordEndPostion=0;longlength=inOne.length();intflag=1;intc=-1;for(int c=【代码3】 //inOne调用read()方法booleanboo=(c<='Z'&&c>='A')||(c<='z'&&c>='a');{{wordStarPostion=inOne.getFilePointer()-1;}}{{cc

【代码4】//inTwo调用seek 5】//inTworeadFully(bytea)方法，向aStringword=newString(cc);}}}}catch(Exception}publicVector{return}publicVector{return}}importjava.awt.*;importjava.awt.event.*;importjava.util.Vector;importjava.io.File;publicclassStatisticFrameextendsFrameimplements{WordStatisticstatistic;TextAreashowMessage;ButtonopenFile;FileDialogopenFileDialog;VectorallWord,noSameWord;public{statistic=newWordStatistic();showMessage=newTextArea();openFile=newButton("OpenFile");openFileDialog=newFileDialog(this,"打开文件话框",FileDialog.LOAD);allWord=newVector();noSameWord=newVector();addWindowListener(new{publicvoidwindowClosing(WindowEvent{}}publicvoidactionPerformed(ActionEvent{noSameWord.clear();StringfileName=openFileDialog.getFile();{statistic.wordStatistic(newFile(openFileDialog.getDirectory(),fileName));

showMessage.append("\n其中有"+noSameWord.size(showMessage.append("\nn");intcount[]=newint[noSameWord.size()];for(inti=0;i<noSameWord.size();i++){Strings1=(String)noSameWord.elementAt(i);for(intj=0;j<allWord.size();j++) Strings2=(String)allWord.elementAt(j);}}for(int{for(int{{Stringintt=count[m];}}}for(int{}}}}publicclass{publicstaticvoidmain(String{new}}知识 importjava.io.*;importjava.util.zip.*;publicclass publicstaticvoidmain(String{Filef=newFile("book.zip");Filedir=newFile("Book");byteb[]=newbyte[100];{ZipInputStreamin=newZipInputStream(newFileInputStream(f));ZipEntryzipEntry=null; Filefile=newFile(dir,zipEntry.getName());FileOutputStreamout=newFileOutputStream(file);intn=-1;{Stringstr=newString(b,0,n);}}}catch(IOException{}}}知识点JavaIO压缩流(ZipOutputStream/ZipInputStream)，相关知识请扫描如 实验 importjava.awt.*;importjava.awt.event.*;import.*;importjava.io.*;publicclass{publicstaticvoidmain(String{new}}classNetWinextendsFrameimplements{ButtonURLTextFieldTextAreabyteb[]=newbyte[118];Threadthread;{text=newTextField(20);area=newTextArea(12,12);button=newButton("确定");thread=newThread(this);Panelp=newp.add(newLabel("输入:"));addWindowListener(new publicvoidwindowClosing(WindowEvent{}}publicvoidactionPerformed(ActionEvent{thread=newThread(this);}catch(Exception{text.setText("我正在}}publicvoid try intn=-String1nameurlStringhostName2】//urlgetHost()inturlPortNumber=3urlgetPort()StringfileName4】//urlgetFile()InputStreamin5urlarea.append("\nhostName+"端口:"+urlPortNumber+area.append("\n Strings=newString(b,0,n);}}catch(MalformedURLException }catch(IOException }}publicintgetDefaultPort()、publicStringgetRef()、public客户端模板 import.*;importjava.io.*;importjava.awt.*;importjava.awt.event.*;classextendsFrameimplements{Buttonconnection;Socketsocket=null;ObjectInputStreamin=null;ObjectOutputStreamout=null;Threadthread;public{socket=newconnection=newButton("连接服务器,文本区对象");thread=newThread(this);addWindowListener(newWindowAdapter(){publicvoidwindowClosing(WindowEvent{}}}publicvoid{ try{TextAreatext=(TextArea)in.readObject();}catch(Exception{}}}publicvoidactionPerformed(ActionEvent{{{{}{InetAddressaddress=InetAddress.getByName("");流

2】//socketsocketAddressinnewObjectInputStream3//socketout=newObjectOutputStream(4】);//socket}}catch(Exception}}publicstaticvoidmain(String win=new();}}importjava.io.*;import.*;importjava.util.*;importjava.awt.*;publicclass{publicstaticvoidmain(String{ServerSocketserver=null;ServerThreadthread;Socketyou=null;{try{server=【代码1】//创建在端口4331上负 的}catch(IOException{System.out.println("正在}try{you2serverSocket}catch(IOException{System.out.println(}{new}else{}}}}classServerThreadextends{Socketsocket;ObjectInputStreamin=null;ObjectOutputStreamout=null;Strings=null;S