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src/java.base/share/classes/jdk/internal/javac/PreviewFeature.java

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 47          ElementType.PACKAGE,
 48          ElementType.MODULE,
 49          ElementType.TYPE})
 50  // CLASS retention will hopefully be sufficient for the purposes at hand
 51 @Retention(RetentionPolicy.CLASS)
 52 // *Not* @Documented
 53 public @interface PreviewFeature {
 54     /**
 55      * Name of the preview feature the annotated API is associated
 56      * with.
 57      */
 58     public Feature feature();
 59 
 60     public boolean reflective() default false;
 61 
 62     /**
 63      * Enum of preview features in the current release.
 64      * Values should be annotated with the feature's {@code JEP}.
 65      */
 66     public enum Feature {



 67         // while building the interim javac, the ClassReader will produce a warning when loading a class
 68         // keeping the constant of a feature that has been integrated or dropped, serves the purpose of muting such warnings.
 69 
 70         //---
 71         IMPLICIT_CLASSES, //to be removed when boot JDK is 25
 72         @JEP(number=487, title="Scoped Values", status="Fourth Preview")
 73         SCOPED_VALUES,
 74         @JEP(number=505, title="Structured Concurrency", status="Fifth Preview")
 75         STRUCTURED_CONCURRENCY,
 76         CLASSFILE_API,
 77         STREAM_GATHERERS,
 78         MODULE_IMPORTS, //remove when the boot JDK is JDK 25
 79         KEY_DERIVATION, //remove when the boot JDK is JDK 25
 80         @JEP(number = 502, title = "Stable Values", status = "Preview")
 81         STABLE_VALUES,
 82         LANGUAGE_MODEL,
 83         /**
 84          * A key for testing.
 85          */
 86         @JEP(number=2_147_483_647, title="Test Feature")
 87         TEST,
 88         ;
 89     }

 47          ElementType.PACKAGE,
 48          ElementType.MODULE,
 49          ElementType.TYPE})
 50  // CLASS retention will hopefully be sufficient for the purposes at hand
 51 @Retention(RetentionPolicy.CLASS)
 52 // *Not* @Documented
 53 public @interface PreviewFeature {
 54     /**
 55      * Name of the preview feature the annotated API is associated
 56      * with.
 57      */
 58     public Feature feature();
 59 
 60     public boolean reflective() default false;
 61 
 62     /**
 63      * Enum of preview features in the current release.
 64      * Values should be annotated with the feature's {@code JEP}.
 65      */
 66     public enum Feature {
 67         @JEP(number=401, title="Value Classes and Objects", status = "Preview")
 68         VALUE_OBJECTS,
 69 
 70         // while building the interim javac, the ClassReader will produce a warning when loading a class
 71         // keeping the constant of a feature that has been integrated or dropped, serves the purpose of muting such warnings.

 72         //---
 73         IMPLICIT_CLASSES, //to be removed when boot JDK is 25
 74         @JEP(number=487, title="Scoped Values", status="Fourth Preview")
 75         SCOPED_VALUES,
 76         @JEP(number=505, title="Structured Concurrency", status="Fifth Preview")
 77         STRUCTURED_CONCURRENCY,
 78         CLASSFILE_API,
 79         STREAM_GATHERERS,
 80         MODULE_IMPORTS, //remove when the boot JDK is JDK 25
 81         KEY_DERIVATION, //remove when the boot JDK is JDK 25
 82         @JEP(number = 502, title = "Stable Values", status = "Preview")
 83         STABLE_VALUES,
 84         LANGUAGE_MODEL,
 85         /**
 86          * A key for testing.
 87          */
 88         @JEP(number=2_147_483_647, title="Test Feature")
 89         TEST,
 90         ;
 91     }
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