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package jdk.internal;

import java.lang.annotation.*;

Indicates the API declaration in question is associated with a preview feature. See JEP 12: "Preview Language and VM Features" (http://openjdk.java.net/jeps/12).
Since:14
/** * Indicates the API declaration in question is associated with a * <em>preview feature</em>. See JEP 12: "Preview Language and VM * Features" (http://openjdk.java.net/jeps/12). * @since 14 */
// Match the meaningful targets of java.lang.Deprecated, omit local // variables and parameter declarations @Target({ElementType.METHOD, ElementType.CONSTRUCTOR, ElementType.FIELD, ElementType.PACKAGE, ElementType.MODULE, ElementType.TYPE}) // CLASS retention will hopefully be sufficient for the purposes at hand @Retention(RetentionPolicy.CLASS) // *Not* @Documented public @interface PreviewFeature {
Name of the preview feature the annotated API is associated with.
/** * Name of the preview feature the annotated API is associated * with. */
public Feature feature(); public boolean essentialAPI() default false; public enum Feature { // 8242284: // The TEXT_BLOCKS enum constant is not used in the JDK 15 codebase, but // exists to support the bootcycle build of JDK 15. The bootcycle build // of JDK 15 is performed with JDK 14 and the PreviewFeature type from // JDK 15. Since the JDK 14 codebase uses the enum constant, it is // necessary for PreviewFeature in JDK 15 to declare the enum constant. TEXT_BLOCKS, // The RECORDS enum constant is not used in the JDK 16 codebase, but // exists to support the bootcycle build of JDK 16. The bootcycle build // of JDK 16 is performed with JDK 15 and the PreviewFeature type from // JDK 16. Since the JDK 15 codebase uses the enum constant, it is // necessary for PreviewFeature in JDK 16 to declare the enum constant. RECORDS, SEALED_CLASSES, ; } }