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package java.lang.reflect;


ParameterizedType represents a parameterized type such as Collection<String>.

A parameterized type is created the first time it is needed by a reflective method, as specified in this package. When a parameterized type p is created, the generic type declaration that p instantiates is resolved, and all type arguments of p are created recursively. See TypeVariable for details on the creation process for type variables. Repeated creation of a parameterized type has no effect.

Instances of classes that implement this interface must implement an equals() method that equates any two instances that share the same generic type declaration and have equal type parameters.

Since:1.5
/** * ParameterizedType represents a parameterized type such as * Collection&lt;String&gt;. * * <p>A parameterized type is created the first time it is needed by a * reflective method, as specified in this package. When a * parameterized type p is created, the generic type declaration that * p instantiates is resolved, and all type arguments of p are created * recursively. See {@link java.lang.reflect.TypeVariable * TypeVariable} for details on the creation process for type * variables. Repeated creation of a parameterized type has no effect. * * <p>Instances of classes that implement this interface must implement * an equals() method that equates any two instances that share the * same generic type declaration and have equal type parameters. * * @since 1.5 */
public interface ParameterizedType extends Type {
Returns an array of Type objects representing the actual type arguments to this type.

Note that in some cases, the returned array be empty. This can occur if this type represents a non-parameterized type nested within a parameterized type.

Throws:
Returns:an array of Type objects representing the actual type arguments to this type
Since:1.5
/** * Returns an array of {@code Type} objects representing the actual type * arguments to this type. * * <p>Note that in some cases, the returned array be empty. This can occur * if this type represents a non-parameterized type nested within * a parameterized type. * * @return an array of {@code Type} objects representing the actual type * arguments to this type * @throws TypeNotPresentException if any of the * actual type arguments refers to a non-existent type declaration * @throws MalformedParameterizedTypeException if any of the * actual type parameters refer to a parameterized type that cannot * be instantiated for any reason * @since 1.5 */
Type[] getActualTypeArguments();
Returns the Type object representing the class or interface that declared this type.
Returns:the Type object representing the class or interface that declared this type
Since:1.5
/** * Returns the {@code Type} object representing the class or interface * that declared this type. * * @return the {@code Type} object representing the class or interface * that declared this type * @since 1.5 */
Type getRawType();
Returns a Type object representing the type that this type is a member of. For example, if this type is O<T>.I<S>, return a representation of O<T>.

If this type is a top-level type, null is returned.

Throws:
Returns:a Type object representing the type that this type is a member of. If this type is a top-level type, null is returned
Since:1.5
/** * Returns a {@code Type} object representing the type that this type * is a member of. For example, if this type is {@code O<T>.I<S>}, * return a representation of {@code O<T>}. * * <p>If this type is a top-level type, {@code null} is returned. * * @return a {@code Type} object representing the type that * this type is a member of. If this type is a top-level type, * {@code null} is returned * @throws TypeNotPresentException if the owner type * refers to a non-existent type declaration * @throws MalformedParameterizedTypeException if the owner type * refers to a parameterized type that cannot be instantiated * for any reason * @since 1.5 */
Type getOwnerType(); }