Example usage for Java java.util Collection fields, constructors, methods, implement or subclass
The text is from its open source code.
| boolean | add(E e) Ensures that this collection contains the specified element (optional operation). |
| boolean | addAll(Collection c) Adds all of the elements in the specified collection to this collection (optional operation). |
| void | clear() Removes all of the elements from this collection (optional operation). |
| boolean | contains(Object o) Returns true if this collection contains the specified element. |
| boolean | containsAll(Collection c) Returns true if this collection contains all of the elements in the specified collection. |
| boolean | equals(Object o) Compares the specified object with this collection for equality. |
| void | forEach(Consumer action) Performs the given action for each element of the Iterable until all elements have been processed or the action throws an exception. |
| Class | getClass() Returns the runtime class of this Object . |
| int | hashCode() Returns the hash code value for this collection. |
| boolean | isEmpty() Returns true if this collection contains no elements. |
| Iterator | iterator() Returns an iterator over the elements in this collection. |
| void | notifyAll() Wakes up all threads that are waiting on this object's monitor. |
| Stream | parallelStream() Returns a possibly parallel Stream with this collection as its source. |
| boolean | remove(Object o) Removes a single instance of the specified element from this collection, if it is present (optional operation). |
| boolean | removeAll(Collection c) Removes all of this collection's elements that are also contained in the specified collection (optional operation). |
| boolean | removeIf(Predicate filter) Removes all of the elements of this collection that satisfy the given predicate. |
| boolean | retainAll(Collection c) Retains only the elements in this collection that are contained in the specified collection (optional operation). |
| int | size() Returns the number of elements in this collection. |
| Stream | stream() Returns a sequential Stream with this collection as its source. |
| T[] | toArray(T[] a) Returns an array containing all of the elements in this collection; the runtime type of the returned array is that of the specified array. |
| T[] | toArray(IntFunction Returns an array containing all of the elements in this collection, using the provided generator function to allocate the returned array. |
| Object[] | toArray() Returns an array containing all of the elements in this collection. |
| String | toString() Returns a string representation of the object. |