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package javax.ws.rs;

import java.lang.annotation.Documented;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

/**
 * Defines the default value of request meta-data that is bound using one of the
 * following annotations:
 * {@link javax.ws.rs.PathParam},
 * {@link javax.ws.rs.QueryParam},
 * {@link javax.ws.rs.MatrixParam},
 * {@link javax.ws.rs.CookieParam},
 * {@link javax.ws.rs.FormParam},
 * or {@link javax.ws.rs.HeaderParam}.
 * The default value is used if the corresponding meta-data is not present in the
 * request.
 * 

* If the type of the annotated parameter is {@link java.util.List}, * {@link java.util.Set} or {@link java.util.SortedSet} then the resulting collection * will have a single entry mapped from the supplied default value. *

*

* If this annotation is not used and the corresponding meta-data is not * present in the request, the value will be an empty collection for * {@code List}, {@code Set} or {@code SortedSet}, {@code null} for * other object types, and the Java-defined default for primitive types. *

* * @author Paul Sandoz * @author Marc Hadley * @see PathParam * @see QueryParam * @see FormParam * @see HeaderParam * @see MatrixParam * @see CookieParam * @since 1.0 */ @Target({ElementType.PARAMETER, ElementType.METHOD, ElementType.FIELD}) @Retention(RetentionPolicy.RUNTIME) @Documented public @interface DefaultValue { /** * The specified default value. */ String value(); }




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