Java多線程和輸入輸出流

1、1班級(jí)：13科技2班 學(xué)號(hào)：201324131225：許耿寧Java多線程和輸入輸出流一、實(shí)驗(yàn)?zāi)康模?.熟悉利用 Thread 類建立多線程方法。2.熟悉利用 Thread 接口建立多線程方法。3.熟悉 Java 的文件讀寫機(jī)制，練習(xí)輸入輸出流的使用。二、實(shí)驗(yàn)容：1.閱讀下列程序，分析并上機(jī)檢驗(yàn)其功能。 public class DelayRunnableimplements Runnable private static int count=0;private int no;private int delay;public DelayRunnable()count+; no=count;pu

2、blic void run()tryfor (int i=0;i10;i+) delay=(int)(Math.random()*5000);Thread.sleep(delay);System.out.println(Thread +no+ with a delay +delay); catch(InterruptedException e)class MyRunnablepublic static void main(String args) DelayRunnable r1 = new DelayRunnable();DelayRunnable r2 = new DelayRunnabl

3、e();Thread thread1=new Thread(r1);Thread thread2=new Thread(r2);thread1.start();2thread2.start();tryThread.sleep(1000);catch(InterruptedException e)System.out.println(Thread wrong);2. 將上列程序利用 Runnable 接口改寫，并上機(jī)檢驗(yàn)。3. 創(chuàng)建簡(jiǎn)單的程序 ThreeThread.java ，該程序?qū)?chuàng)建三個(gè)線程， 每個(gè)線程應(yīng) 當(dāng)顯示它所運(yùn)行的時(shí)間(可以考慮使用 Date 類或 Calendar 類)。4.

4、鍵盤輸入 10 個(gè)整數(shù)，從小到大進(jìn)行排序。5. 接收鍵盤輸入的字符串，用 FileInputStream 類將字符串寫入文件，用FileOutputStream 類讀出文件容顯示在屏幕上。6. 將一個(gè)文本文件的容按行讀出，每讀出一行就順序加上行號(hào)，并寫入到另一個(gè)文件中。三、實(shí)驗(yàn)要求：1. 通過(guò)實(shí)驗(yàn)掌握 Thread 、 Runnable 使用方法；2. 程序必須能夠?qū)崿F(xiàn)多線程；3. 程序必須能夠完成題目要求；4. 通過(guò)實(shí)驗(yàn)掌握文件輸入輸出流的使用方法；5. 程序必須能夠從鍵盤接收字符串并保存在文件中；6. 程序必須能夠讀出文件容顯示在屏幕上；7. 寫出實(shí)驗(yàn)報(bào)告。四、實(shí)驗(yàn)代碼及截圖： 第一題：

5、在編譯器上運(yùn)行程序得到截圖所示結(jié)果：3terminMyRunnable Java ApplieationJ D:Js;Thread1 with a delayThread2wtha delayThread2with白delayThread1witha delayThread2 witha delayThread1witha delayThre白d 2witha del白yThread1withdLdelayThread2witha delayThread1witha delayThread2 with a delayThread2with a delayThread2 with a delyT

6、hread1witha delayThread1witha delayThread2witha delayThread1witha delayThread2withdelayThread1with a delayThread1witha delay32873870353148724491416461132684200220811015851681274312303400236023984810298第二題：實(shí)驗(yàn)代碼public class DelayThread exte nds Threadprivate static int coun t=0;private int no;private

7、int delay;public DelayThread()coun t+;no=co unt;public void run()tryfor (i nt i=0;i10;i+)delay=(i nt)(Math.ra ndom()*5000);sleep(delay);System.out.pri ntl n(Thread +no+ with a delay+delay); catch(I nterruptedExcepti on e)4class MyThreadpublic static void main( Stri ng args) DelayThread thread 仁 new

8、DelayThread();DelayThread thread2=new DelayThread(); thread1.start();thread2.start();tryThread.sleep(1000);catch(l nterruptedExcepti on e) System.out.pri ntl n(Thread wron g);實(shí)驗(yàn)結(jié)果截圖： MyTliread Java Applkaticn D:JavajThread 1 with adelay720Thread 2評(píng)ith a delay2041Thread 1 with adelay2560Thread 2 with

9、 adelay 4080Thread 1 with adelay3169Thread 1 with adelay490Thread 2 with adelay960Thread 1 with adelay 960Thread 2 with adelay1179Thread 1 with adelay 410Thread 2 with adelay80 CThread 1 with adelay3415Thread 2叩ith a delay4053Thread 1 with adely3159Thread 2 with adelay2476Thread 1 with日delay1361Thre

10、ad 2 with adelay3926Thread 1 with adelay2845Thread 2 with adelay1052Thread 2 with adelay 422第三題：實(shí)驗(yàn)代碼：public class MultiThread static Lock mylock;public static void main( Stri ng args) Runnin gObject1 r1 = new Runnin gObject1();Thread t1 = new Thread(r1, t1);Thread t2 = new Thread(r1, t2);Thread t3 =

11、 new Thread(r1, t3);t1.start();t3.start();5t2.start();static class RunningObjectl implements Runnable public void run() syn chro nized(this)Stri ng n ame=Thread.curre ntThread().getName();System.out.pri ntln(n ame+開(kāi)始日寸間:+Cale ndar.getl nsta nce().getTimel nMillis();for (int i = 0; i MultrThread JJav

12、a Applicdtion DiJavdjreL9.0_9rbintl幵始時(shí)I環(huán)1466407635147=結(jié)束時(shí)間4466407635200t2ff始時(shí)間：L46640763520014664076352211466407635222結(jié)莉寸間：1466407635227第四題：實(shí)驗(yàn)代碼：public class Test1 public static void main(String args) throws IOExceptionBufferedReaderbr=newBufferedReader( newIn putStreamReader(System.i n);Stri ng str

13、;int array=new in t10;246for(int i=0;i10;i+)int a=i+1;System.out.println(請(qǐng)輸入第+a+整數(shù):);str=br.readL in e();arrayi=l nteger.parsel nt(str);for(i nt j=0;j9;j+)for(int k=j+1;k10;k+)if(arraykarrayj)int temp=arrayk;arrayk=arrayj; arrayj=temp;for(i nt m=0;m10;m+)if(m!=9) System.out.pri nt(arraym+,);elseSyst

14、em.out.pri nt(arraym);實(shí)驗(yàn)結(jié)果截圖：termi n dte-destl刖Appiic腫on U;y| rel,b inj vaJ.Vi口I請(qǐng)諭入第l整情諭入第2整數(shù)：請(qǐng)輸入第3整數(shù)：請(qǐng)輸入第4整數(shù)：34請(qǐng)諭入第5整數(shù)：請(qǐng)輸入第6整數(shù)：請(qǐng)輸入第7龜數(shù)：66請(qǐng)輸入第g整數(shù)：99請(qǐng)輸入第9整數(shù)：744請(qǐng)輸入策10整數(shù)：201,13,20,22,24,34,44,53,6r99第五題：實(shí)驗(yàn)代碼： public class Test2 public static void main( Stri ng args) try System.out.println(”請(qǐng)輸入容:)；File

15、 myfile = new File(save.txt);byte outCh = new byte100;int bytes = System.i n.read(outCh, 0, 100);/將 文件讀入二進(jìn)制數(shù)組中FileOutputStream Fout = new FileOutputStream(myfile);Fout.write(outCh,0,bytes);/將數(shù)組中的字節(jié)輸入到這個(gè)流中 byte inCh= new bytebytes;File In putStream Fin = new File In putStream(myfile);Fin. read(i nCh)

16、;System.out.pri ntln(讀取文件容：);System.out.pri ntln(n ew Strin g(i nCh); catch (IOExcepti on e) System.out.pri ntl n( e.toStri ng();實(shí)驗(yàn)結(jié)果截圖：utermi門曰tedn T皿2 (1 Java Application D:Jdvajre 1.3.1 binjavaw.exe 20166冃20日 請(qǐng)輸入內(nèi)容：好好學(xué)習(xí)，天天向上快取文件內(nèi)容；好好學(xué)習(xí)，天天問(wèn)上文件(F)務(wù)任格式 grt(V)亀旬(H好好學(xué)習(xí)，天天向上第六題：實(shí)驗(yàn)代碼：public class Test3

17、public static void main(String args) throws lOException Stri ng str=n ull;FileReader file=new FileReader(F:/1.txt);8FileWriter b=new FileWriter(F:/2.txt); BufferedWriter c=newBufferedWriter(b);Lin eNumberReader in=new Lin eNumberReader(file); while(str=in.readLi ne()!=null)System.out.pri ntl n(i n.getLi neNumber()+:+str); c.write(st