Menu
I understand that the main purpose of labels is to use them with break and continue to alter the usual behaviour of the loop. But it's possible to label every statement that is not a declaration.
int j = 0;
LABEL1: j++;
LABEL2: for (int i = 0; i < 4 ; i++) {
if (i == 3) break LABEL2;
}
Is there any purpose to labels like LABEL1 since it's not allowed to break LABEL1?
339
A Label object is a component for placing text in a container. A label displays a single line of read-only text. The text can be changed by the application, but a user cannot edit it directly.
Yes, you should avoid using label unless there's a specific reason to use them (the example of it simplifying implementation of an algorithm is pertinent).
What is a labeled loop in Java? A label is a valid variable name that denotes the name of the loop to where the control of execution should jump. To label a loop, place the label before the loop with a colon at the end.
An early unreleased version of java used to have GOTO. In order to jump to any statement with GOTO, you have to be able to label it.
Then at some point James Gosling decided that it wasn't a good feature and ripped it out. This involved grepping through all java code that existed at the time and rewriting any GOTO usage; there were 13 uses. (Source: youtube video)
So, like GOTO still being a reserved word, it's a remnant of GOTO support.
128
If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
Donate Us With
