QQ主窗体屏幕边缘自动隐藏设置

方法一

//Process p = Runtime.getRuntime().exec("ping 127.0.0.1 -t");
  Process p = Runtime.getRuntime().exec("javac");
  InputStream is = p.getInputStream();
  BufferedReader reader = new BufferedReader(new InputStreamReader(is));
  String line;
  while((line = reader.readLine())!= null){
   System.out.println(line);
  }
  p.waitFor();
  is.close();
  reader.close();
  p.destroy();
 }

方法二

package com.cmd;

　　import java.lang.*;

　　import java.io.*;

　　public class Process {

　　public static void main(String[] args) {

　　java.lang.Process process = null;

　　try {

　　process = Runtime.getRuntime().exec("net user");

　　ByteArrayOutputStream resultOutStream = new ByteArrayOutputStream();

　　InputStream errorInStream = new BufferedInputStream(process.getErrorStream());

　　InputStream processInStream = new BufferedInputStream(process.getInputStream());

　　int num = 0;

　　byte[] bs = new byte[1024];

　　while((num=errorInStream.read(bs))!=-1){

　　resultOutStream.write(bs,0,num);

　　}

　　while((num=processInStream.read(bs))!=-1){

　　resultOutStream.write(bs,0,num);

　　}

　　String result=new String(resultOutStream.toByteArray());

　　System.out.println(result);

　　errorInStream.close(); errorInStream=null;

　　processInStream.close(); processInStream=null;

　　resultOutStream.close(); resultOutStream=null;

　　} catch (IOException e) {

　　e.printStackTrace();

　　}finally{

　　if(process!=null) process.destroy();

　　process=null;

　　}

　　}

　　}

4. Runtime.exec() 不等同于直接执行command line命令！

啊，我算是在这里吃了苦头了。Runtime.exec()很有局限性，对有些命令不能直接把command line里的内容当作String参数传给exec().

比如重定向等命令。举个例子:

javap -l xxx > output.txt

这时要用到exec的第二种重载，即input 参数为String[]:

Process p = Runtime.getRuntime().exec(new String[]{"/bin/sh","-c","javap -l xxx > output.txt"});

 

 

import java.io.InputStreamReader;  

import java.io.LineNumberReader;  

import java.util.ArrayList;  

import java.util.List;  

  

  

public class test{  

/**  

     * 运行shell脚本  

     * @param shell 需要运行的shell脚本  

     */    

     public static void execShell(String shell){  

    

        try {    

            Runtime rt = Runtime.getRuntime();    

            rt.exec(shell);    

        } catch (Exception e) {    

            e.printStackTrace();    

        }    

     }    

/**  

     * 运行shell  

     *   

     * @param shStr  

     *            需要执行的shell  

     * @return  

     * @throws IOException  

     */    

    public static List runShell(String shStr) throws Exception {    

        List<String> strList = new ArrayList();    

    

        Process process;    

        process = Runtime.getRuntime().exec(new String[]{"/bin/sh","-c",shStr},null,null);    

        //process = Runtime.getRuntime().exec(shStr);    

        InputStreamReader ir = new InputStreamReader(process    

                .getInputStream());    

        LineNumberReader input = new LineNumberReader(ir);    

        String line;    

        process.waitFor();    

        while ((line = input.readLine()) != null){    

            System.out.println(line);  

            strList.add(line);    

        }    

            

        return strList;    

    }  

    public static void main(String []arge)throws Exception {  

          

        test t=new test();  

        t.runShell("/home/ubuntu/soft/tomcat/bin/startup.sh")  

    } 

 

 

String[] cmd = new String[]{"/bin/sh","-c", " ps -ef"};

  Process ps = Runtime.getRuntime().exec(cmd);

  BufferedReader br = new BufferedReader(new InputStreamReader(ps.getInputStream()));
  StringBuffer sb = new StringBuffer();
  String line;
  while ((line = br.readLine()) != null) {
  sb.append(line).append("\n");
  }
  String result = sb.toString();

  System.out.println(result);