java-collection-framework | Java collection interfaces classes | Reflection library
kandi X-RAY | java-collection-framework Summary
kandi X-RAY | java-collection-framework Summary
The Java language development team that created the original java.util collection classes was fairly new to object oriented design and collection frameworks and therefore made some common mistakes:. We forgive them, however, since they got a lot of things right :wink:. Subsequent additions to the java.util package helped address some of these issues, but the designers were somewhat constrained by the original mistakes to maintain backward compatibility.
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Top functions reviewed by kandi - BETA
- Gets the elements in a sorted collection
- Inserts a new node into the tree
- Pushes a node to the tree
- Compares the two specified elements
- Returns the elements in the specified range
- Adds an element to the array
- Creates iterator
- Removes the next element from the queue
- Removes all elements within the specified range
- Gets the elements in the specified range
- Returns the top element of the stack
- Removes the top element from the stack
- Adds an element to the tail of the queue
- Removes the elements at the specified index range
- Compares two Sequence objects
- Returns a Dictionary containing all the associations of the given keys
- Returns a new set which contains all the elements in the two sets
- Returns the index of the given element
- Returns a sub - list of the elements in the specified range
- Gets elements in the specified range
- Compares this sequence and another sequence
- Compares two collections
- Removes the key from the map
- Gets all associations in the given range
- Associates the specified value with the specified key
- Returns a deep copy of this table
java-collection-framework Key Features
java-collection-framework Examples and Code Snippets
Community Discussions
Trending Discussions on java-collection-framework
QUESTION
Say I want to add duplicate element in HashSet
. We know that is not allowed. So I came across 2, let's say theories.
Under 'PROPERTIES, number 2' of this link, it says:
HashSet does not allow duplicate elements. If you try to insert a duplicate element, older element will be overwritten
But when I check docs that are provided to me in IDE, in method add()
, it states:
...
ANSWER
Answered 2020-Oct-02 at 15:27Any the theories can be verified by looking at the source code.
For example, for JDK 8, HashSet::add
implemented as follows:
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