The asList() method of java.util.Arrays class is used to return a fixed-size list backed by the specified array.
This method acts as bridge between array-based and collection-based APIs, in combination with Collection.toArray(). The returned list is serializable and implements RandomAccess.
This runs in O(1) time.
public static List asList(T... a)
Parameters: This method takes the array a which is required to be converted into a List. Here … is known as varang which is an array of parameters and works similar to an object array parameter.
NOTE : The type of array must be a Wrapper Class(Integer,FLoat, etc) in case of primitive data types(int,float,etc) , i.e you can’t pass int a but you can pass Integer a. If you pass int a,this function will return a List <int a> and not List <Integer> , as “autoboxing” doesn’t happens in this case and int a is itself identified as an object and a List of int array is returned, instead of list of integers , which will give error in various Collection functions .
Return Value: This method returns a list view of the specified array.
Below are the examples to illustrate the asList() method.
The list is: [A, B, C, D]
The list is: [10, 20, 30, 40]
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