Query in Java- Initialization error - 


public class switch {     public static void main(string args[]){         int month=4;          string season="";   // question: giving error if not initializing here, y ?         switch(month){             case 12:             case 1:             case 2:                 season="winter";                 break;             case 3:             case 4:             case 5:                 season="spring";                 break;             case 6:             case 7:             case 8:                 season="summer";                 break;             case 9:             case 10:             case 11:                 season="autumn";                 break;             default:               system.out.println("bogus month");          }         system.out.println("april in "+season+".");        } }

i created example code using if else , there showing no initialization error variable season here it's showing initialization error it. where's wrong?

this same code using if else here season wasn't initialized , yet gave no error.

public class ifelse {     public static void main(string args[]){         int month=4;          string season;          if(month==12 || month==1 ||  month==2)             season="winter";         else if(month==3 || month==4 || month==5)             season="spring";         else if(month==6 || month==7 || month==8)             season="summers";         else if(month==9 || month==10 || month==11)             season="autumn";         else              season="bogus month";         system.out.println("april in "+season+".");     } }

the difference in switch, default case doesn't set season. try set value in default , don't initialize variable. not give error.

something like:

default:    season = "default";    system.out.println("bogus month");

this because compiler knows before printing season value have value set after executing switch sure since default sets value season. in if-else sure season have value after executes.


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