Convert ArrayList to Arrays

Convert ArrayList to Arrays

Answer: Many time in programming situation arises to convert ArrayList to Arrays and java API provides many ways to convert from ArrayList to Arrays. Please have java example below where I will show three different ways to convert ArrayList to Arrays:

package com.javahonk.arraylistvector;

import java.util.ArrayList;
import java.util.List;

public class ArrayListToArrays {

    public static void main(String[] args) {
    
    List<String> list = new ArrayList<String>();
    list.add("Java");
    list.add("Honk");
    list.add("Test");
    list.add(null);
    list.add(null);
    list.add("Software");
    list.add("Software");
    list.add("IT");
    
    System.out.println("Example 1:\n");
    Object [] array = list.toArray();
    
    for (int i = 0; i < array.length; i++) {
        Object object = array[i];
        System.out.println(object);
        
    }
    
    System.out.println("\nExample 2:\n");
    String arrays[] = list.toArray(new String[0]);
    
    for (int i = 0; i < arrays.length; i++) {
        String string = arrays[i];
        System.out.println(string);
    }
    
    System.out.println("\nExample 3:\n");
    String arrayString [] = new String[list.size()];
    for (int i = 0; i < list.size(); i++) {
        String string = list.get(i);
        arrayString[i] = string;        
    }
    
    for (int i = 0; i < arrayString.length; i++) {
        String string = arrayString[i];
        System.out.println(string);
    }
    
    

    }

}

Output:

Convert ArrayList to Arrays

That’s it Convert ArrayList to Arrays

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