Java Hashtable class is an implementation of hash table data structure. It is very much similar to HashMap in Java, with most significant difference that Hashtable is synchronized while HashMap is not. In this Hashtable tutorial, we will learn it’s internals, constructors, methods, use-...
The iterators returned by theiteratormethod of the collections returned by all of this class's "collection view methods" arefail-fast: if the Hashtable is structurally modified at any time after the iterator is created, in any way except through the iterator's ownremovemethod, the iterator wil...
The iterators returned by the iterator method of the collections returned by all of this class's "collection view methods" are fail-fast: if the Hashtable is structurally modified at any time after the iterator is created, in any way except through the iterator's own remove method, the iter...
学习Java , Object 类绝对是绕不过去的。先看下官方文档如何描述 Object 类 Class {@code Object} is the root of the class hierarchy. Every class has {@code Object} as a superclass. All objects, including arrays, implement the methods of this class. 正如JDK 文档所说,Object类是类继承层次结构...
public V put(K key, V value) { return putVal(hash(key), key, value, false, true); } /** * Implements Map.put and related methods. * * @param hash hash for key * @param key the key * @param value the value to put * @param onlyIfAbsent if true, don't change existing val...
public Enumeration<V> elements()Returns an enumeration of the values in this hashtable. Use the Enumeration methods on the returned object to fetch the elements sequentially. If the hashtable is structurally modified while enumerating over the values then the results of enumerating are undefined....
* Use the Enumeration methods on the returned object to fetch the elements * sequentially. * * @return an enumeration of the values in this hashtable. * @see java.util.Enumeration * @see #keys() * @see #values() * @see Map */ public synchronized Enumeration<V> elements() { return ...
an enumeration of the values in this hashtable. Attributes RegisterAttribute Remarks Returns an enumeration of the values in this hashtable. Use the Enumeration methods on the returned object to fetch the elements sequentially. If the hashtable is structurally modified while enumerating over the value...
an enumeration of the values in this hashtable. Attributes RegisterAttribute Remarks Returns an enumeration of the values in this hashtable. Use the Enumeration methods on the returned object to fetch the elements sequentially. If the hashtable is structurally modified while enumerating over the value...
Returns the number of keys in this hashtable. int[] toOrderedKeys() Methods inherited from class java.lang.Object equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, waitConstructor Detail IntHashtable public IntHashtable() Constructs a new, empty hashtable with...