The example given below illustrates the conversion of a collection into a array. In this example we creating an object of ArrayList, adding elements into this object and storing this object into List interface. Convert elements of ArrayList into an array by using toArray().
List interface is a member of the Java Collection Framework and extends Collection interface. It is an ordered collection which follows insertion order, typically allow duplicate elements. The class ArrayList extends AbstractList class and implements List, RandomAccess, Cloneable, Serializable interfaces. ArrayList class is a member of the Java Collections Framework.
The method used:
toArray(Object a): This method returns an array containing all of the elements of the given list.
The code of the program is given below:
The output of the program is given below:
C:\rajesh\kodejava>javac CollectionToArray.java Note: CollectionToArray.java uses unchecked or unsafe operations. Note: Recompile with -Xlint:unchecked for details.
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