Java Collections emptyIterator() Method21 Mar 2025 | 1 min read The emptyIterator() method of Java Collections class is used to get an Iterator that has no elements. SyntaxFollowing is the declaration of emptyIterator() method: ParameterThis method does not accept any parameter. ReturnsThe emptyIterator() method returns an empty Iterator. ExceptionsNA Compatibility VersionJava 1.7 and above Example 1Output: Output: false Example 2Output: Iterator list is empty. Example 3Output: It is empty Iterator list. Next TopicJava Collections Class |
Java Collections Method The method of Java Collections class returns an empty navigable map which is immutable. Syntax Following is the declaration of method: public static final <K,V> NavigableMap<K,V> Parameter This method does not accept any parameter. Returns The method returns an empty immutable Navigable Map. Exceptions NA Compatibility Version Java...
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Java Collections Method The method of Java Collections class is used to reverse the order of the elements in the specified list. Syntax Following is the declaration of method: public static void reverse(List<?> list) Parameter Parameter Description Required/Optional list It is the list whose elements are to be reversed. Required Returns The method does...
2 min read
Java Collections Method The method of Java Collections class is used to get the sorted Set that has no elements. These empty Set are immutable in nature. Syntax Following is the declaration of method: public static final <E> SortedSet<E> Parameter This method does not accept any parameter. Returns The...
2 min read
Java collection class is used exclusively with static methods that operate on or return collections. It inherits Object class. The important points about are: Java Collection class supports the polymorphic algorithms that operate on collections. Java Collection class throws a NullPointerException if the collections or class objects provided...
6 min read
Java Collections Method The method of Java Collections class is used to get an immutable list consisting of n copies of the specified object. Syntax Following is the declaration of method: public static <T> List<T> nCopies(int n, T o) Parameter Parameter Description Required/Optional n It is the number of elements in the...
2 min read
Java Collections Method The method of Java Collections class is used to get an unmodifiable view of the specified set. Syntax Following is the declaration of method: public static <T> Set<T> unmodifiableSet(Set<? extends T> s) Parameter Parameter Description Required/Optional s It is the set for which an unmodifiable view is to be...
2 min read
Java Collections Method The method of Java Collections class is used to get the starting position of the last occurrence of the specified target list within the specified source list. It returns -1 if there is no such occurrence in the specified list. Syntax Following is...
3 min read
Java Collections Method The method of Java Collections class is used to get a List that has no elements. These empty list are immutable in nature. The Collections. method in Java, part of the java.util.Collections class, returns an immutable empty List. This means that the...
5 min read
Java Collections Method The method of Java Collections class is used to swap the elements at the specified positions in the specified list. Syntax Following is the declaration of method: public static void swap(List<?> list, int i, int j) Parameter Parameter Description Required/Optional list It is the list in which we will...
2 min read
Java Collections Method The method of Java Collections class is used to get a List Iterator that has no elements. Syntax Following is the declaration of method: public static <T> ListIterator<T> Parameter This method does not accept any parameter. Returns The method returns the list Iterator that...
2 min read
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