IO求好手详细注释

import java.io.*;class TestInOut implements Runnable{    Process p=null;    public TestInOut()    {        try        {            p=Runtime.getRuntime().exec("java MyTest");            new Thread(this).start();        }catch(Exception e)        {            e.printStackTrace();        }    }    public static void main(String []args)    {        TestInOut tio=new TestInOut();        tio.send();    }    public void send()    {        //int count=0;        try        {            OutputStream os=p.getOutputStream();            while(true)            {        //        System.out.println(++count);                os.write("help\r\n".getBytes());            }        }catch(Exception e)        {            e.printStackTrace();        }    }    public void run()    {        try        {            InputStream in=p.getInputStream();            BufferedReader br=new BufferedReader(new InputStreamReader(in));            while(true)            {                String strLine=br.readLine();                if(strLine!=null)                System.out.println(strLine);                else                return;            }        }catch(Exception e)        {            e.printStackTrace();        }    }}

import java.io.*;public class MyTest{    public static void main(String []args) throws Exception    {        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));        while(true)        {        //    System.out.println("Hi:"+new BufferedReader(new InputStreamReader(System.in)).readLine());//原始状态        //    String strLine=new BufferedReader(new InputStreamReader(System.in)).readLine();//修改状态            String strLine=br.readLine();            if(strLine!=null)            System.out.println("Hi:"+strLine);            else            return;        }    }}

import java.io.*;public class MyTest {    public static void main(String[] args) throws Exception {        //获取控制台的流，包装为BufferedReader，方便正行读取        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));        while (true) {            // System.out.println("Hi:"+new BufferedReader(new            // InputStreamReader(System.in)).readLine());//原始状态            // String strLine=new BufferedReader(new            // InputStreamReader(System.in)).readLine();//修改状态                        //控制台中读取一行，返回null表示结束            String strLine = br.readLine();                        //如果没有结束，答应Hi +　输入的信息            if (strLine != null)                System.out.println("Hi:" + strLine);            //否则退出程序            else                return;        }    }}
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Java code
import java.io.*;class TestInOut implements Runnable {    Process p = null;    public TestInOut() {        try {            // 运行My Test 监听MyTest输入输出            p = Runtime.getRuntime().exec("java MyTest");            new Thread(this).start();        } catch (Exception e) {            e.printStackTrace();        }    }    public static void main(String[] args) {        TestInOut tio = new TestInOut();        tio.send();    }    public void send() {        // int count=0;        try {            // 输出流，往My Test循环发送help的信息            OutputStream os = p.getOutputStream();            while (true) {                // System.out.println(++count);                os.write("help\r\n".getBytes());            }        } catch (Exception e) {            e.printStackTrace();        }    }    public void run() {        try {            // 输入流，获取My Test的输出            InputStream in = p.getInputStream();            BufferedReader br = new BufferedReader(new InputStreamReader(in));            while (true) {                String strLine = br.readLine();                if (strLine != null)                    System.out.println(strLine);                else                    return;            }        } catch (Exception e) {            e.printStackTrace();        }    }}