java - of advantages of setting the reference variable of runner to the knockOut before the values to the runner variable are set -


in below example, variable runner being set knockout object before values variable runner set. advantages on setting variables object before setting values following variable? appreciated.

would there difference in code 1 , code 2?

code 1

runner = new runner(); knockout.setrunner(runner); if(fpmlmap.get(abcconstants.knock_out_event) != null      && fpmlmap.get(abcconstants.knock_out_event).trim().length() > 0) {      string  knockoutevent = fpmlmap.get(abcconstants.knock_out_event);     runnertypeenum = null;     runner.setrunnertype(runnertypeenum.fromvalue(knockoutevent)); }

code 2

runner = new runner();     if(fpmlmap.get(abcconstants.knock_out_event) != null      && fpmlmap.get(abcconstants.knock_out_event).trim().length() > 0) {      string  knockoutevent = fpmlmap.get(abcconstants.knock_out_event);     runnertypeenum = null;     runner.setrunnertype(runnertypeenum.fromvalue(knockoutevent)); } knockout.setrunner(runner);

this way, knockout has reference runner, regardless of outcome of following if block.

edit

to respond edit: there no difference between 2 examples. both ways valid , produce same behavior.

(that's assuming code above "normal" , reasonable programmer expect do.)

you might choose first style improve readability of code, when taken in context. however, second style more common in experience.


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