java process

此博估计唯一一个完整可编译的代码哈哈

import java.io.*;
import java.util.*;

//Commons Logging imports
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;


public class TestProcess{

public static final Log LOG = LogFactory.getLog(TestProcess.class);

    public static int doWaitFor(Process p) { 
       int exitValue = -1; // returned to caller when p is finished 
       try { 
    
            InputStream in = p.getInputStream();
            InputStream err = p.getErrorStream(); 
            boolean finished = false; // Set to true when p is finished 
     
            while(!finished); { 
               try { 
                   while( in.available() > 0) { 
                       // Print the output of our system call 
                       Character c = new Character( (char) in.read()); 
                       System.out.print( c); 
                   } 
                   while( err.available() > 0) { 
                       // Print the output of our system call 
                       Character c = new Character( (char) err.read()); 
                       System.out.print( c); 
                   } 
    
                   // Ask the process for its exitValue. If the process 
                   // is not finished, an IllegalThreadStateException 
                   // is thrown. If it is finished, we fall through and 
                   // the variable finished is set to true. 
                   exitValue = p.exitValue(); 
                  finished = true; 
               } 
               catch (IllegalThreadStateException e) { 
                   // Process is not finished yet; 
                   // Sleep a little to save on CPU cycles 
                   Thread.currentThread().sleep(500); 
               } 
           } 
       } 
       catch (Exception e) { 
           // unexpected exception! print it out for debugging... 
          System.err.println( "doWaitFor();: unexpected exception - " + 
           e.getMessage()); 
       } 
    
       // return completion status to caller 
       return exitValue; 
}



public static void main(String args[]){



String[] cmd = {"/temp/single.sh","656.gif"};
File directory = new File("/temp/");

ProcessBuilder pb = new ProcessBuilder(cmd);

pb.directory(directory);
Map<String,String> map = pb.environment();
pb.redirectErrorStream(true);
try{
Process process = pb.start();
int exit = process.waitFor();
//int exit = TestProcess.doWaitFor(process);
System.out.println(exit);
}catch(Exception e){
e.printStackTrace();
}


}
}