adding get mothods to a class extending thread

[aliaa2a]

here is what i am trying to do...

i have a class to run system commands which extending the Thread class.
inside this class, a method called getOutput() that should return a string with the result.

the commands run successfully with no problems. all i want to do is to get the output stream in a string...


Thread t1 = new Command();
t1.getOutput(); // --> Not working of course because it is not a method of the thread class

Q: is that possible to do in another way... giving that the class extends Thread

Thanks

[Json]

Hello,

How are you executing these system commands?

How are you actually feeding your results into the output variable?

// Json

[aliaa2a]

Hello Json, sorry i was away for the last couple of days...

anyways, i have the following class, used to get the ls (unix command) of a file

public class TestGetDate {
String result;
String file;
Process p;
BufferedReader stdInput;
String s;
String awk;
String[] command;
public TestGetDate(String file) throws IOException{
super();
this.file = file;

p = Runtime.getRuntime().exec("ls -l " + file);
stdInput = new BufferedReader(new InputStreamReader(p.getInputStream()));
result = "";
while (!procDone(p)) {
while((s=stdInput.readLine()) !=null){


result = result+s;
}
setOutput(result);

}
System.out.println(result);
stdInput.close();

}

private boolean procDone(Process p) {
try {
int v = p.exitValue();
return true;
}
catch(IllegalThreadStateException e) {
return false;
}
}
public void setOutput(String result){
this.result = result;
}
public String getOutput(){
return result;
}

}

i want this class to run as a thread but when i do, i cannot run the getOutput() method.

any ideas?

Thanks anyway

[helloworld922]

I think it's because of how Java handles multi-threading... They have a very strict lock mechanism that prevents almost any chance of dual access, deadlocking, or an such other strange things associate with multi-threading. You can read Sun Java's Tutorial on Concurrency, but it's fairly hard to follow unless you have a fairly good knowledge of computer science and/or java.

[Freaky Chris]

Make you class extend Thread. then instead of calling it using Thread t1 = new Command();

You would do something like this, if command is the class you want to run as a thread, such as your TestGetDate class.

Command c1 = new Command();
c1.start();

If I understood your problem correctly, then you can call c1.getOutput();

Regards,
Chri

[aliaa2a]

Thanks Freaky Chris, it works like a charm.

[Freaky Chris]

Excellent Glad I could help

Chris