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LinkedListLinkedList is based on a two-way cyclic chain list implementation. It can also be manipulated as a stack, a queue, or a double-ended queue. Non-thread safe. The following directly paste ArrayList Java implementation (only part of the code), source Jdk1.8.0_25/src.zip. /** * * * * * * * * * * * The data structure ********* * contains: Node val

(); int next = current-1; if (Compareandset (current, next)) return next; }} public final int addandget (int. delta) {for (;;) {int current = get (); int next = current + Delta; if (Compareandset (current, next)) return next; }} public String toString () {return integer.tostring (get ()); } public int Intvalue () {return get (); } public Long Longvalue () {return (long) get (); } public float Floatvalue () {return (float) get (); } p

After downloading the source code of Oscache, you need to add some functions. Compile the code after importing eclipse. The cache. Java file reports the following error: Description resource path location typeThe Method Add (class Description resource path location typeTh

.containsValue (Object value) to find if the map contains the specified value1 System.out.println (Hashmap.get ("A")); // - 2 System.out.println (Hashmap.containskey ("A")); // true 3 System.out.println (Hashmap.containsvalue (100)); // trueView Code modifying elements 1.put (K key, V value) finds value with the same key value, overwriting with the new value value1 Hashmap.put ("A", +); 2 System.o

timerevent interface of timerclient specified by timertask. Timerctl. Java Package com. ly. util; Import java. util. vector;Import java. util. enumeration;// Import com. Borland. JB. util. Diagnostic; /*** Timer component** Note:*-The successful operation of this timer requires clients to execute simple, short* Code s

words, this method behaves as if it were only executing wait (0) calls. The current thread must have this object monitor. The thread releases ownership of this monitor and waits until other threads wake up by calling the Notify method, or the Notifyall method notifies the thread waiting on this object's monitor. The thread then waits to regain ownership of the monitor before it can continue execution. */ Public Final voidWait ()throwsinterruptedexception {Wait (0); }

, and the position of the iteration is the last element. First, if the argument is empty, and if the argument is empty, the list iterator starts the forward iteration and finds the last empty argument, returning the subscript of the iterator's just iteration. If the argument is not empty and the same start iteration is determined, and the last element equal to the parameter is judged, the iterator returns the subscript of the just iteration.If there is always no return value, 1 is returned.publi

iteration is not resumed, so an exception is thrown. Then check that two Modcount variables are equal.Then call this list of the deletion method, judge if Lastret is smaller than the cursor, the cursor is reduced by one, Lastref assignment is-1, because the backward traversal, Lastret This value is just the element of the iteration, the cursor increased by 1, If you delete the element just now, the cursor will be reduced back.The last two modcount are synchronized once this process has an excep

be 0, that is, the index position is definitely an even number, so that the odd position of the array does not place all elements, wasting a lot of space.In short: a power of length of 2 guarantees the validity of the bitwise and last one, making the hash table hash more homogeneous.6 The following analysis HashMap the most common operations put and getNote that both key and value in HashMap are allowed to be nullDirectly on the code: get*********

array.Add (int index, E element) function:Ensurecapacity (size+1); Increments modcount!!System.arraycopy (Elementdata, index, Elementdata, index + 1, size-index); Elementdata[index] = element; size++;The same is to expand the array first, then call System.arraycopy to adjust the array elements, and then insert the new element at the specified position index.As a result, when adding elements to ArrayList, use the Add function as much as possible to make it more efficient.Read elements are obtain

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Read the source code of the EnumSet abstract class and the abstract source code of enumset. EnumSet EnumSet is a generic Java Enumeration type container. Since Java has SortedSet, TreeS

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