执行一个命令

 

<!----> 1 import java.io. * ;
2
3 public class ExecCmd{
4
5 public static void main(String[] args){
6 try {
7 String command = " java " ;
8 Process p = Runtime.getRuntime().exec(command);
9
10 InputStream in = p.getInputStream();
11 OutputStream out = new FileOutputStream( new File( " c:\\temp.txt " ));
12 byte [] buffer = new byte [ 1024 ];
13 int c = 0 ;
14 while ((c = in.read(buffer)) != - 1 ) {
15 out.write(buffer, 0 ,c);
16 }
17 in.close();
18 out.close();
19 // Wait for it to finish running
20 try {
21 p.waitFor();
22 }
23 catch (InterruptedException ie) {
24 System.out.println( ie );
25 }
26
27 // Check the return code
28 int ret = p.exitValue();
29 if (ret == 0 ){
30 System.exit( 0 );
31 }
32
33 } catch (IOException e) {}
34 }
35 }