What are collections and generics
What are collections and generics?
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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.
Constant: It is the memory block where value can be stored once although can’t modify later on throughout program execution. Example: const int pi =3.14;
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Final variable: A variable with final reserved word in its declaration. The final might not assigned to once it has been initialized. Initialization frequently occurs as a part of its declaration. Though, the initialization of an uninitialized final f
Filter stream: It is an input-output class which filters or manipulates its stream of input- or output-data in some manner. Two illustrations are: DataInputStream and DataOutputStream.
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Single line comment: A comment is in the form: // this line will be avoided by the compiler.
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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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