Question

Why am I getting an undefined label error in following code?
(I am leaving out some irrelevant code …)

 loopLabel: 
 for(i=0;;i++)
 {
   { // some code;
   }
   { // some code;
   }
 }

 if(condition)
 {
     if(condition)
     { // some code
     }
     else 
     { 
           //some code;
           continue loopLabel;
     }
 }


  

Answer 1

continue is used to skip to the start of a new iteration of a loop; you use a label if you have nested loops and you want to specify which one to jump to. You’re trying to use it like a goto to jump to a totally unrelated section of code, which isn’t allowed

Legal usage is something like:

foo:
while(cond1) {
    code;
    while(cond2) {
        if(cond3) {
            continue foo;
        }
    }
}

(Java guide on branching statements)