In this article, we will discuss how to convert ArrayList to Arrays in different ways

Conversion of ArrayList to Arrays[] :

Using toArrays() method
Using traditional way by iterating and converting one-by-one

1. Using toArrays(); method

Steps :

Initialize ArrayList with sample values
Convert ArrayList to String[] Arrays using toArrays(); method, by passing to ArrayList‘s size
Print converted String[] Arrays in console using enhanced for-each loop

Method signature:

public Object toArrays();

ConvertArrayListToStringArrays.java

package in.bench.resources.collection;

import java.util.ArrayList;

public class ConvertArrayListToStringArrays {

	public static void main(String[] args) {

		// creating ArrayList object of type String
		ArrayList<String> al = new ArrayList<String>();

		// adding elements to ArrayList object
		al.add("Hollywood");
		al.add("Bollywood");
		al.add("Kollywood");
		al.add("Tollywood");
		al.add("Mollywood");
		al.add("Sandalwood");

		// creating String Arrays using ArrayList size
		// conversion of ArrayList to String[] Arrays
		String[] industry = al.toArray(new String[al.size()]);

		System.out.println("Conversion of "
				+ "ArrayList<String> to String[] Arrays\n");

		// print Arrays values
		for(String str : industry){
			System.out.println(str);}
	}
}

Output:

Conversion of ArrayList<String> to String[] Arrays

Hollywood
Bollywood
Kollywood
Tollywood
Mollywood
Sandalwood

2. Conversion of List into Arrays using traditional way

Steps :

Initialize ArrayList with sample values
create empty String[] Arrays of ArrayList size using size(); method of ArrayList
Iterate through original ArrayList using traditional for-loop and assign each value of ArrayList to String[] Arrays
Finally, print converted String[] Arrays to console using enhanced for-each loop

ConvertListIntoArrays.java

package in.bench.resources.collection;

import java.util.ArrayList;

public class ConvertListIntoArrays {

	public static void main(String[] args) {

		// creating ArrayList object of type String
		ArrayList<String> al = new ArrayList<String>();

		// adding elements to ArrayList object
		al.add("Hollywood");
		al.add("Bollywood");
		al.add("Kollywood");
		al.add("Tollywood");
		al.add("Mollywood");
		al.add("Sandalwood");

		// create empty String[] Arrays of ArrayList size
		String[] industry = new String[al.size()];

		// conversion of ArrayList to String[] Arrays
		// using traditional for-loop
		for(int index=0; index < industry.length; index++){

			// assign each element of AL to String[]
			industry[index] = al.get(index);
		}

		System.out.println("Conversion of "
				+ "ArrayList<String> to String[] Arrays\n");

		// print Arrays values
		for(String str : industry){
			System.out.println(str);}
	}
}

Output:

Conversion of ArrayList<String> to String[] Arrays

Hollywood
Bollywood
Kollywood
Tollywood
Mollywood
Sandalwood

References:

Happy Coding !!
Happy Learning !!

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Java – Conversion of ArrayList to Arrays in 2 ways

Conversion of ArrayList to Arrays[] :

1. Using toArrays(); method

Steps :

Method signature:

ConvertArrayListToStringArrays.java

Output:

2. Conversion of List into Arrays using traditional way

Steps :

ConvertListIntoArrays.java

Output:

Related Articles:

References:

Related

Conversion of ArrayList to Arrays[] :

1. Using toArrays(); method

Steps :

Method signature:

ConvertArrayListToStringArrays.java

Output:

2. Conversion of List into Arrays using traditional way

Steps :

ConvertListIntoArrays.java

Output:

Related Articles:

References:

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