Java List size() Method24 Mar 2025 | 2 min read The size() method of List Interface returns the total number of elements present in this list. SyntaxParametersNA ReturnThe size() method returns the number of elements in this list. Example 1Output: List : [34, 56, 12, 43] Total element of the list : 4 Example 2Output: Total students : 3 Name : Reema School : Gita Convent School Name : Geetu School : Gita Convent School Name : Saloni School : Eicher School Example 3Output: Total alphabets : 26 List : [a, b, c, d, e, f, g, h, i, j, k, l, m, n, o, p, q, r, s, t, u, v, w, x, y, z] Next TopicJava List |
Java List.sort() Method The sort() method is used to sort the elements of a List in ascending order according to their natural ordering or using a custom Comparator provided by the user. The List interface belong to the java.util package. It extends the Collection interface. The...
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Java Method The get() method of List interface returns the element at the specified position in this list. Syntax public E get(int index) Parameters The parameter 'index' represents the index of the elements to return. Return The get() method returns the element at the specified position in this list. Throws: IndexOutOfBoundsException- If the...
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Java Method The hashCode() method of List interface returns the hash code value for this list. Syntax public int hashCode() Parameters NA Specified By hashcode in interface Collection<E> Overrides This method overrides hashCode in class Object Returns The hashCode() method returns the hash code value for this list. Example 1 import java.util.ArrayList; import java.util.List; public class JavaListHashCodeExample1 { public static...
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Java Method The containsAll() method of List interface returns a Boolean value 'true' if this list contains all the elements of the invoked collection. Syntax public Boolean containsAll(Collection<?> c) Parameters The parameter 'c' represents the collection to be checked for occurrence in this list. Specified By containsAll in interface Collection<E> Throws: ClassCastException- If...
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Java Method The indexOf() method of List interface returns the index of the first occurrence of the specified element in this list. It returns -1 if the specified element is not present in this list. Syntax public int indexOf(Object o) Parameters The parameter 'o' represents the element to be...
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Java Method The toArray() method of List interface returns an array containing all the elements present in the list in proper order. The second syntax returns an array containing all of the elements in this list where the runtime type of the returned array is that...
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Java Method The spliterator() method of List Interface creates a Spliterator over the elements in the given list. Syntax default Spliterator<E> spliterator() Parameters NA Specified by spliterator() in interface Collection<E> spliterator() in interface Iterable<E> Returns: The spliterator() method returns a Spliterator over the elements in this list. Example 1 import java.util.LinkedList; import java.util.List; import java.util.Spliterator; public class JavaListSpliteratorExample1 { public...
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Java Method The sublist() method of List Interface returns a view of the portion of this list between the inclusive and exclusive parameters. This method eliminates the need for explicit range operations. Syntax public List<E> subList(int fromIndex, int toIndex) Parameters The parameters 'fromIndex' and 'toIndex' represent the low and...
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Java Method The isEmpty() method of List interface returns a Boolean value 'true' if this list contains no elements. Syntax public boolean isEmpty() Parameters NA Specified By isEmpty in interface Collection<E> Return The isEmpty () method returns the Boolean value 'true' if this list contains no elements, else it returns false. Example 1 import java.util.LinkedList; import...
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Java Method The equals() method of List interface compares the specified object with this collection for equality. It returns a Boolean value true if both the lists have same elements and are of the same size. Syntax public boolean equals(Object o) Parameters The parameter 'o' represents the object to...
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