can any one plz find the error.

Items are not added in ComboBox is the main problem.
here actually i'm adding items in combobox where the items are the output of the execution of script. i don't know y the items are not added in the combobox can u plz find out the problem....
and here is the code.

Code Java:

---

String line;
JComboBox combo=new JComboBox();
ProcessBuilder pb=new ProcessBuilder("./script.sh);
Process p=pb.start();
BufferedReader output=new BufferedReader(new InputStreamReader(p.getInputStream()));
while((line=output.readLine())!=null){
synchronized(this){
combo.addItem(line);
}
}

---

This could be any number of things. Recommend you post an SSCCE which demonstrates the problem, otherwise its guessing

It appears you're missing a " at the end of

ProcessBuilder pb=new ProcessBuilder("./script.sh);

Maybe that was just when you posted it online, but if not, that's probably your problem.

Also, if the items aren't being added, perhaps

Code java:

---

while((line=output.readLine())!=null){
synchronized(this){
combo.addItem(line);
}

---

is never being entered for some reason.