Short IF - ELSE statement

Question

I m trying to make my code more readable  so I decided to use some short IF statements    Here s my code which doesn t work   not a statement     jXPanel6 isVisible     jXPanel6 setVisible true    jXPanel6 setVisible false     What s wrong with this  Needs brackets  Where

User · Answer

jXPanel6 setVisible jXPanel6 isVisible       or in your form   jXPanel6 setVisible jXPanel6 isVisible   true false

User · Answer

The  ternary expression  x   y   z can only be used for conditional assignment   That is  you could do something like   String mood   inProfit      happy     sad     because the ternary expression is returning something  of type String in this example    It s not really meant to be used as a short  in-line if-else   In particular  you can t use it if the individual parts don t return a value  or return values of incompatible types    So while you could do this if both method happened to return the same value  you shouldn t invoke it for the side-effect purposes only    So the proper way to do this would just be with an if-else block   if  jXPanel6 isVisible          jXPanel6 setVisible true     else       jXPanel6 setVisible false       which of course can be shortened to  jXPanel6 setVisible jXPanel6 isVisible       Both of those latter expressions are  for me  more readable in that they more clearly communicate what it is you re trying to do    And by the way  did you get your conditions the wrong way round   It looks like this is a no-op anyway  rather than a toggle    Don t mix up low character count with readability   The key point is what is most easily understood  and mildly misusing language features is a definite way to confuse readers  or at least make them do a mental double-take

User · Answer

As others have indicated  something of the form  x   y   z   is an expression  not a  complete  statement  It is an rvalue which needs to get used someplace - like on the right side of an assignment  or a parameter to a function etc   Perhaps you could look at this  http   download oracle com javase tutorial java nutsandbolts expressions html

User · Answer

The ternary operator can only be the right side of an assignment and not a statement of its own   http   www devdaily com java edu pj pj010018

User · Answer

You can do it as simple as this  I did it in react hooks      myNumber    12     true     false    it was equal to this long if function below    if  myNumber    12       true    else      false      Hope it helps

User · Answer

I m a little late to the party but for future readers   From what i can tell  you re just wanting to toggle the visibility state right  Why not just use the   operator   jxPanel6 setVisible  jxPanel6 isVisible     It s not an if statement but I prefer this method for code related to your example

[java] Short IF - ELSE statement

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