Switch statement ​​​​​​​​​​​​​​?

[Metin2 Dev 9199]

Hello, I have a doubt. I saw several codes in which the cases of the switch statement have keys {}.
So my question is: When do I know that keys should be put or not?
For example, in "if statement" must be set keys if the content of the "if" has more than one line.
Does the same thing happen with the cases?
Excuse my bad English.

[Metin2 Dev 9199]

No need for { }. Case actually tell the program where to start code execution and is executed until the end of the switch or break;

If you make a new case and place all the code you want inside { } and in the end you don't write break, the code will be executed after { } even if it is another case.

[Metin2 Dev 9199]

Many thanks!