Question

How to convert an ArrayList of String to String array in Java

Answer 1

import java.util.ArrayList; 
import java.util.Arrays; 
 
public class MyClass {
    public static void main(String args[]) {
        ArrayList<String> al = new ArrayList<String>(); 
   
        al.add("java"); 
        al.add("c++"); 
        al.add("nodejs"); 
        al.add("php"); 
 
        String[] array = new String[al.size()]; 
         
        for (int i = 0; i < al.size(); i++) { 
            array[i] = al.get(i); 
        } 

        System.out.println(Arrays.toString(array)); 
    }
}
 
 
 
/*
run:
 
[java, c++, nodejs, php]
 
*/

 

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Answer 2

import java.util.ArrayList; 
import java.util.Arrays; 
 
public class MyClass {
    public static void main(String args[]) {
        ArrayList<String> al = new ArrayList<String>(); 
   
        al.add("java"); 
        al.add("c++"); 
        al.add("nodejs"); 
        al.add("php"); 
 
        Object[] obj = al.toArray(); 
   
        String[] arr = Arrays.copyOf(obj, obj.length, String[].class); 
         
        System.out.print(Arrays.toString(arr)); 
    }
}
 
 
 
/*
run:
 
[java, c++, nodejs, php]
 
*/

 

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Answer 3

import java.util.ArrayList; 

public class MyClass {
    public static void main(String args[]) {
        ArrayList<String> al = new ArrayList<String>(); 
   
        al.add("java"); 
        al.add("c++"); 
        al.add("nodejs"); 
        al.add("php"); 
 
        String[] arr = new String[al.size()];
         
        arr = al.toArray(arr);
 
        for (String s : arr) {
            System.out.println(s);
        }
    }
}
 
 
 
/*
run:
 
java
c++
nodejs
php
 
*/

 

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Answer 4

import java.util.ArrayList; 

public class MyClass {
    public static void main(String args[]) {
        ArrayList<String> al = new ArrayList<String>(); 
   
        al.add("java"); 
        al.add("c++"); 
        al.add("nodejs"); 
        al.add("php"); 
 
        String[] arr = al.toArray(new String[al.size()]);
 
        for (String s : arr) {
            System.out.println(s);
        }
    }
}
 
 
 
/*
run:
 
java
c++
nodejs
php

*/

 

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Answer 5

import java.util.ArrayList; 
import java.util.Arrays; 

public class MyClass {
    public static void main(String args[]) {
        ArrayList<String> al = new ArrayList<String>(); 
   
        al.add("java"); 
        al.add("c++"); 
        al.add("nodejs"); 
        al.add("php"); 

        String[] arr = al.toArray(new String[0]);
         
        System.out.print(Arrays.toString(arr)); 
    }
}
 
 
 
/*
run:
 
[java, c++, nodejs, php]
 
*/

 

70+ SQL courses for beginners and professionals