What are collections and generics
What are collections and generics?
Expert
A collection can be defined as a group of related items that can be referred to as a single unit. The System.Collections namespace provides you with many classes and interfaces. Some of them are - ArrayList, List, Stack, ICollection, IEnumerable, and IDictionary. Generics provide the type-safety to your class at the compile time. While creating a data structure, you never need to specify the data type at the time of declaration. The System.Collections.Generic namespace contains all the generic collections.
Native method: In native method, the method is written in a language other than Java, however accessible to a Java program. Native methods are far away from the scope of this definition.
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Discrete simulation: In a discrete simulation, the time passes at an irregular rate which is determined by the primary events of interest in simulation.
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Null reference: A value utilized to mean, `no object'. Employed whenever an object reference variable is not referring to the object.
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Client: It is a user of a service. The Web client requests resources from Web server, for example: Whenever the client is an object then this is the sender of messages to its object servers.
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