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Thread: Switch case with nested if inside

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    Default Switch case with nested if inside

    Hi Good day.. can give me a sample program which solves with switch case statement with nested if inside?

    thanks


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    Default Re: Switch case with nested if inside

    Can you post the code you are having problems with?
    If you don't understand my answer, don't ignore it, ask a question.

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    Default Re: Switch case with nested if inside

    Welcome to the forum! Please read this topic to learn how to post code in code or highlight tags and other useful info for new members.

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    Default Re: Switch case with nested if inside

    //package
    // imports
     
    // class
    {
       // main
       {
          // switch
          {
             // if statements
          }
       }
    }

    That's the base for what it should look like.

    Wishes Ada xx
    If to Err is human - then programmers are most human of us all.
    "The Analytical Engine offers a new, a vast, and a powerful language . . .
    for the purposes of mankind
    ."
    Augusta Ada Byron, Lady Lovelace (1851)

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    Default Re: Switch case with nested if inside

    If i understood you correctly you wish to see an example of a switch being implemented in if-else methods.
    If you're trying to decide which is better, know that in practice, they function almost alike, even performance-wise.

    Public static void main(String[] args) {
     
    int _number;
     
    //... a command which will assign an integer into '_number' (_number = 2 for example)
     
        Switch (_number) {
            Case 0 : //What to do when _number == 0 ;
                        //Break;
            Case 1 : //What to do when _number == 1 ;
                        //Break;
            Case 2 : //What to do when _number == 2 ;
                        //Break;
            Default : //What to do when its none of the above
                        //Break;
        }
    }

    Public static void main(String[] args) {
     
    int _number;
     
    //... a command which will assign an integer into '_number' (_number = 2 for example)
     
    If (_number == 0) { //What to do when _number == 0 ;
    }  else if (_number == 1) { //What to do when _number == 1 ;
    }  else if (_number == 2) { //What to do when _number == 2 ;
    }  else { //What to do when its none of the above
    }

    You could ofcourse do it like

    If (_number == 0) { //What to do when _number == 0 ; }
    If (_number == 1) { //What to do when _number == 1 ; }
    If (_number == 2) { //What to do when _number == 2 ; }
    ...

    But that wouldn't be as efficient, as it continues checking and comparing, again and again, regardless to the outcome.

    a better explanation and examples can be found at java docs:
    The switch Statement (The Java™ Tutorials > Learning the Java Language > Language Basics)
    Last edited by Stum; July 16th, 2014 at 05:46 AM.

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