How to check whether a Hashtable is null in Java -
How to check whether a Hashtable is null in Java -
given next java codes:
hashtable<string,integer> hs = new hashtable<string,integer>(); if(hs==null){ system.out.println("this table blank"); }
a new hashtable created no pairs. why there no output console? way, how check whether hashtable null?
the hashtable
isn't null
when it's empty; object still there. utilize isempty()
method instead.
if (hs.isempty()){
java hashtable
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