Collection classes are Java API defined classes that can store objects in a manner similar to how data structures like arrays store primitive data types like, "'int "', "'double "', "'long "'or "'char "', etc ., But arrays store primitive data types while collections actually store objects.
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Collection classes are Java API defined classes that can store objects in a manner similar to how data structures like arrays store primitive data types like, "'int "', "'double "', "'long "'or "'char "', etc ., But arrays store primitive data types while collections actually store objects.
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The main difference is that whereas variables can be declared in Java as "'double "', "'short "', "'int "', or "'char "', etc ., data types, the eight primitive wrapper classes create instantiated objects and methods that inherit but hide the eight primitive data types, not variables that are assigned data type values.
