System.exit(0) hangs on solaris

[Sanket]

I have a java application, which generates a html file. Here is how
main method looks like

public static void main(String args[])
{
//Create a new file using File class.
//Make backend calls and get data.
//Write to the file using filewriter and close the file.
System.out.println("abc.html is generated succesfully");
System.exit(0);
}

This code works fine on windows environment, but when put it on Unix
solaris environment, it just hangs. On Solaris, it prints the above
System.out statement fine and even generates abc.html, but it just
hangs at System.exit(0).
Any clues how to fix this? How to make this application exit on
solaris.
Any help will be highly appriciated.