package com.pan.simplepicture.annotations; import java.lang.annotation.Retention; import java.lang.annotation.Target; import static java.lang.annotation.ElementType.FIELD; import static java.lang.annotation.ElementType.METHOD; import static java.lang.annotation.ElementType.PARAMETER; import static java.lang.annotation.RetentionPolicy.CLASS; @Retention(CLASS) @Target({ METHOD, PARAMETER, FIELD }) public @interface NonNull { }