Hernán Eche :
This code can check whether a class is deprecated or not
@Deprecated
public class
RetentionPolicyExample
{
public static void main(String[] args){
boolean isDeprecated=false;
if(RetentionPolicyExample.class.getAnnotations().length>0){
isDeprecated= RetentionPolicyExample.class
.getAnnotations()[0].toString()
.contains("Deprecated");
}
System.out.println("is deprecated:"+ isDeprecated);
}
}
But, how can be checked if any variable is annotated as deprecated?
@Deprecated
String
variable;
HTNW :
import java.util.stream.Stream;
Field[] fields = RetentionPolicyExample.class // Get the class
.getDeclaredFields(); // Get its fields
boolean isAnyDeprecated = Stream.of(fields) // Iterate over fields
// If it is deprecated, this gets the annotation.
// Else, null
.map(field -> field.getAnnotation(Deprecated.class))
.anyMatch(x -> x != null); // Is there a deprecated annotation somewhere?
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