}
enum Size{SMALL,MEDIUM,LARGE};
Size t=;
(st);
(().isPrimitive());
Size u=("SMALL");
(su); //true
for(Size value:()){
(value);
}`
The results are as follows:
SMALL
MEDIUM
LARGE
The result of running the whole code:
enum Size{SMALL,MEDIUM,LARGE};
The analysis and results are as follows: enum Size{SMALL,MEDIUM,LARGE};This code defines the Size enumeration;Size s=;Size t=;
Create Size variables s, t;//s and t refer to the same object?(st);
Compare variables s, t Result: false Indicates that s and t are not referencing the same objectIs // a primitive data type?(().isPrimitive());
Calls the isPrimitive() method in **Class** to determine if the enumerated variable is a primitive data type. Result: false Indicates that the enumerated variable is not a primitive data type. **Added: Primitive data type: refers to data types that store basic data directly (e.g., int, double), they have a fixed number of bytes and are not objects. **//convert from stringSize u=("SMALL");
(su); //true
This code converts a string to an enumerated variable according to the valueOf method of the enumerated type Result: false The same-valued enumerated variable obtained by the string conversion is the same as the originally created enumerated variable.// List all its valuesfor(Size value:()){
(value);
}`
The results are as follows:
SMALL
MEDIUM
LARGE
The result of running the whole code: