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The Collection class can be used immediately by creating an instance of one of its constructed types; all you have to do is specify the type of object to be contained in the collection. Photo Editing Software For Java Phones Free Download on this page. In addition, you can derive your own collection type from any constructed type, or derive a generic collection type from the Collection class itself. The Collection class provides protected methods that can be used to customize its behavior when adding and removing items, clearing the collection, or setting the value of an existing item. Download Game Pc Link Google Drive. Most Collection objectscan be modified. However, a Collection object that is initialized with a read-only object cannot be modified.
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Ved Prakash Sharma Hindi Novel Free Download Pdf. See for a read-only version of this class. Elements in this collection can be accessed using an integer index. Indexes in this collection are zero-based. Collection accepts null as a valid value for reference types and allows duplicate elements. This section contains two code examples. The first example demonstrates several properties and methods of the Collection class.
The second example shows how to derive a collection class from a constructed type of Collection, and how to override the protected methods of Collection to provide custom behavior. Example 1 The following code example demonstrates many of the properties and methods of Collection. The code example creates a collection of strings, uses the method to add several strings, displays the, and lists the strings. The example uses the method to find the index of a string and the method to determine whether a string is in the collection. The example inserts a string using the method and retrieves and sets strings using the default property (the indexer in C#). The example removes strings by string identity using the method and by index using the method.
Finally, the method is used to clear all strings from the collection. Public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe. A Collection can support multiple readers concurrently, as long as the collection is not modified. Even so, enumerating through a collection is intrinsically not a thread-safe procedure. To guarantee thread safety during enumeration, you can lock the collection during the entire enumeration.