Different ways of converting Array to ArrayList() in Java
In this post, we are going to see different ways of converting Array to ArrayList() in Java.
Arrays.asList()method of java.util.Arrays class. Used to return a fixed-size list backed by the specified array. List is serializable and allows random access.Collections.addAll()method add all the element to the specified array. It is faster in performance. So this is a best way to get the array converted toArrayList.Iteration– An traditional method to add all the arrays manually.
To know the difference between the Array and ArrayList() see our another post: Array vs ArrayList in Java
Example
package MyFunctions;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
public class ArrayToArrayList {
public static void main(String args[]) {
String[] array = {"Apple", "Banana", "Kiwi", "Dates", "Grapes"};
//Method 1
List<String> list = Arrays.asList(array);
System.out.println(list);
//Method 2
List<String> list1 = new ArrayList<String>();
Collections.addAll(list1, array);
System.out.println(list1);
//Method 3
List<String> list2 = new ArrayList<String>();
for(String text:array) {
list2.add(text);
}
System.out.println(list2);
}
}
Output
[Apple, Banana, Kiwi, Dates, Grapes] [Apple, Banana, Kiwi, Dates, Grapes] [Apple, Banana, Kiwi, Dates, Grapes]
Happy Learning 🙂
