For this sort of thing I prefer to build up a string, and print the whole string at the end. This allows me to keep related things together: it scares me, for example, that there is so much distance between the point that you emit the public class $class\{ and the point you emit the closing '}'. Instead I might wrap it as something like:

  sprintf <<CLASS, $class, $classdef;
public class %s {
%s
}
CLASS
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.. and I'd probably end up putting it in a little function.

I do this because I find it more robust against future changes. Programs like this tend to get extended over time in a manner rather like the expansion of the universe - any two lines of code will tend to get further apart as time passes, and by the time the code emitting the '{' and the '}' are in separate source files you've created a big maintenance headache.

Another benefit of building up a string to be written at the end is that it doesn't create a (broken) output file if you break out of the program during the 'enter properties' loop.

Hugo