With this example we are going to demonstrate how to convert an ArrayList to Object array. The array will contain all of the elements existing in the ArrayList. In short, to convert an ArrayList to Object array you should:
- Create a new ArrayList.
- Populate the arrayList with elements, using
add(E e) API method of ArrayList. - Use
toArray()API method of ArrayList. The method returns an array containing all of the elements in this list. The elements in the array are in proper sequence (from first to last element).
Let’s take a look at the code snippet that follows:
package com.javacodegeeks.snippets.core;
import java.util.ArrayList;
public class ConvertArrayListToObjectArray {
public static void main(String[] args) {
// Create an ArrayList and populate it with elements
ArrayList arrayList = new ArrayList();
arrayList.add("element_1");
arrayList.add("element_2");
arrayList.add("element_3");
arrayList.add("element_4");
// toArray() returns an array containing all of the elements in this list in the correct order
Object[] objArray = arrayList.toArray();
System.out.println("Elements in Array :");
for(int i=0; i < objArray.length ; i++)
System.out.println(objArray[i]);
}
}
Output:
Elements in Array :
element_1
element_2
element_3
element_4
This was an example of how to convert an ArrayList to Object array in Java.
