scope in Java
The scope of a variable is where the name can be used to refer to the entity. In other parts of the program the name may refer to a different entity, or to nothing at all. Trying to declare two variables with same name in same scope causes a compile time error. ``` class Main { public static void main(String[] args) { int i = 22; { int i = 11; // variable i is already defined in method main if (true) { int i = 0; // variable i is already defined in method main } } } } ```