What does info mean in java

info in Java is a generic type parameter used to specify additional information or metadata contained by a class object: allowed to be used in class declarations or method signatures. Commonly used in collection frameworks (such as Map and List) to specify the type of additional information about the objects in the collection. Type parameters provide access to additional information, enhancing flexibility, extensibility, and type safety.

What does Info mean in Java?

In Java, info is usually a generic type parameter used to specify additional information or metadata contained in an object of a class. It is a placeholder that can be used in a class declaration or method signature so that the code can handle different types of information.

Specific usage:

info Type parameters are usually used with classes in the collection framework, such as Map and List. It allows you to specify additional information types about the objects in the collection.

For example, here is a Map declaration using a info type parameter:

<code>Map<String, Integer, String> myMap = new HashMap<>();</code>

In this example:

• String is the type of key.
• Integer is a value type.
• String is the info type, which specifies additional information for each key-value pair.

When you access key-value pairs in myMap, additional information can be accessed through the info type parameter.

Advantages:

Using info type parameters has several advantages, including:

• Flexible Properties: It allows you to add additional information to an object without modifying the class structure.
• Extensibility: It allows you to extend the class in the future and add new information types.
• Type safety: It ensures that the type of additional information is correct through strong typing.

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