Multi tool use

How to use constants definded in other class file as the default value in a custom annotation [duplicate]

This question already has an answer here:

I hava below custom annotation,

@Inherited
@Target(ElementType.TYPE)
@Retention(RetentionPolicy.RUNTIME)
public @interface MyAnno {

String value() default "";

// use constants value defined in other file
int capacity() default com.constant.Constant.MAX_DATA_ROW;
}


I got a compile error say:

"Attribute value must be constant"


I don't want to write a direct value to default but I want to refer it from other class.
so how can I accomplish that ?

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MAX_DATA_ROW

static final

2 Answers
2

Your constant MAX_DATA_ROW must be "public static final", otherwise it isn't a real constant.

You must define MAX_DATA_ROW as static and final:

MAX_DATA_ROW

static

final

public class Constant {

public static final int MAX_DATA_ROW = 1;

}