Java多线程和输入输出流.doc

班级：13科技2班 学号：201324131225 姓名：许耿宁 Java多线程和输入输出流一、实验目的：1.熟悉利用Thread类建立多线程方法。2.熟悉利用Thread接口建立多线程方法。3.熟悉Java的文件读写机制，练习输入输出流的使用。二、实验内容： 1.阅读下列程序，分析并上机检验其功能。 public class DelayRunnable implements Runnableprivate static int count=0;private int no;private int delay;public DelayRunnable() count+; no=count; public void run() try for (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 DelayRunnable();Thread thread1=new Thread(r1);Thread thread2=new Thread(r2);thread1.start();thread2.start();tryThread.sleep(1000);catch(InterruptedException e)System.out.println(Thread wrong);2.将上列程序利用Runnable接口改写，并上机检验。3.创建简单的程序ThreeThread.java，该程序将创建三个线程，每个线程应当显示它所运行的时间（可以考虑使用Date类或Calendar类）。4.键盘输入10个整数，从小到大进行排序。5.接收键盘输入的字符串，用FileInputStream类将字符串写入文件，用FileOutputStream类读出文件内容显示在屏幕上。6.将一个文本文件的内容按行读出，每读出一行就顺序加上行号，并写入到另一个文件中。三、实验要求：1.通过实验掌握Thread 、Runnable使用方法；2.程序必须能够实现多线程；3.程序必须能够完成题目要求；4.通过实验掌握文件输入输出流的使用方法；5.程序必须能够从键盘接收字符串并保存在文件中；6.程序必须能够读出文件内容显示在屏幕上；7.写出实验报告。四、实验代码及截图：第一题：在编译器上运行程序得到截图所示结果：第二题：实验代码public class DelayThread extends Thread private static int count=0; private int no; private int delay; public DelayThread() count+; no=count; public void run() try for (int i=0;i10;i+) delay=(int)(Math.random()*5000); sleep(delay); System.out.println(Thread +no+ with a delay +delay); catch(InterruptedException e) class MyThread public static void main(String args) DelayThread thread1=new DelayThread(); DelayThread thread2=new DelayThread(); thread1.start(); thread2.start(); tryThread.sleep(1000);catch(InterruptedException e)System.out.println(Thread wrong); 实验结果截图：第三题：实验代码：public class MultiThread static Lock mylock; public static void main(String args) RunningObject1 r1 = new RunningObject1(); Thread t1 = new Thread(r1, t1); Thread t2 = new Thread(r1, t2); Thread t3 = new Thread(r1, t3); t1.start(); t3.start(); t2.start(); static class RunningObject1 implements Runnable public void run() synchronized(this) String name=Thread.currentThread().getName(); System.out.println(name+开始时间:+Calendar.getInstance().getTimeInMillis(); for (int i = 0; i 100000000; i+) if (i = 9999999) System.out.println(name+结束时间:+Calendar.getInstance().getTimeInMillis(); break;实验结果截图：第四题：实验代码：public class Test1 public static void main(String args) throws IOExceptionBufferedReader br=new BufferedReader(new InputStreamReader(System.in);String str;int array=new int10;for(int i=0;i10;i+)int a=i+1;System.out.println(请输入第+a+整数:);str=br.readLine();arrayi=Integer.parseInt(str);for(int j=0;j9;j+)for(int k=j+1;k10;k+)if(arraykarrayj)int temp=arrayk; arrayk=arrayj; arrayj=temp;for(int m=0;m10;m+)if(m!=9)System.out.print(arraym+,);elseSystem.out.print(arraym);实验结果截图：第五题：实验代码：public class Test2 public static void main(String args) try System.out.println(请输入内容:); File myfile = new File(save.txt); byte outCh = new byte100; int bytes = System.in.read(outCh, 0, 100);/将文件读入二进制数组中 FileOutputStream Fout = new FileOutputStream(myfile); Fout.write(outCh,0,bytes);/将数组中的字节输入到这个流中 byte inCh = new bytebytes; FileInputStream Fin = new FileInputStream(myfile); Fin.read(inCh); System.out.println(读取文件内容：); System.out.println(new String(inCh); catch (IOException e) System.out.println(e.toString(); 实验结果截图：第六题：实验代码：public class Test3 public static void main(String args) throws IOExceptionString str=null;FileReader file=new FileReader(F:/1.txt);FileWriter b=new FileWriter(F:/2.txt);BufferedWriter c=new BufferedWriter(b);LineNumberReader in=new LineNumberReader(file);while(str=in.readLine()!=null)System.out.