Comprehensive practical training of Java generics, collection framework, List interface, Iterator and Collections tool classes
1, Review of knowledge points
1. Java generics < >
Concept:
Generics are used to specify the data type you want to use. Angle brackets < > are used to indicate that the data type must be class.
For example, a Worker class is created and used as a generic type, < student >.
be careful:
The data type cannot be a native ...
Added by anon_amos on Tue, 08 Feb 2022 04:57:05 +0200
The difference between Set and List in Java
Main differences between Set and List
Duplicate elements are allowed to be inserted in the List, while duplicate elements are not allowed in the Set.Related to the storage order of elements, List is an ordered Set, which will retain the order in which elements are inserted, and Set is an unordered Set.List can be accessed by subscript, but Set ...
Added by OMorchoe on Mon, 31 Jan 2022 14:21:17 +0200
[source code matters] learn the underlying source code of LinkedList easily. What are you waiting for
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Added by psn on Thu, 23 Dec 2021 13:53:49 +0200