Best way to “negate” an instanceof

Question

I was thinking if there exists a better/nicer way to negate an instanceof in Java. Actually, I\'m doing something like:

if(!(str instanceof String))         


        

Answer 1

Usually you don't want just an if but an else clause as well.

if(!(str instanceof String)) { /* do Something */ } 
else { /* do something else */ }

can be written as

if(str instanceof String) { /* do Something else */ } 
else { /* do something */ }

Or you can write the code so you don't need to know if its a String or not. e.g.

if(!(str instanceof String)) { str = str.toString(); } 

can be written as

str = str.toString();