In Java 8 or later:
String listString = String.join(", ", list);
In case the list is not of type String, a joining collector can be used:
String listString = list.stream().map(Object::toString)
.collect(Collectors.joining(", "));
Top answer 1 of 16
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In Java 8 or later:
String listString = String.join(", ", list);
In case the list is not of type String, a joining collector can be used:
String listString = list.stream().map(Object::toString)
.collect(Collectors.joining(", "));
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If you happen to be doing this on Android, there is a nice utility for this called TextUtils which has a .join(String delimiter, Iterable) method.
List<String> list = new ArrayList<String>();
list.add("Item 1");
list.add("Item 2");
String joined = TextUtils.join(", ", list);
Obviously not much use outside of Android, but figured I'd add it to this thread...
GeeksforGeeks
geeksforgeeks.org › java › convert-an-arraylist-of-string-to-a-string-array-in-java
Convert an ArrayList of String to a String Array in Java - GeeksforGeeks
July 11, 2025 - Fetch each element of the ArrayList one by one using get() method. Assigned each element into String Array using assignment(=) operator. Printing string array. ... // Java Program to Convert ArrayList to Array // using toArray() Method // Importing required classes import java.util.ArrayList; import java.util.Arrays; // Main class class GFG { // Main driver method public static void main(String[] args) { // Creating an empty ArrayList of string type ArrayList<String> al = new ArrayList<String>(); ...
arrays - Converting 'ArrayList<String> to 'String[]' in Java - Stack Overflow
How might I convert an ArrayList object to a String[] array in Java? More on stackoverflow.com
java - Convert ArrayList<String> to String[] array - Stack Overflow
In Java, generic type exists at compile-time only. At runtime information about generic type (like in your case ) is removed and replaced with Object type (take a look at type erasure). That is why at runtime toArray() have no idea about what precise type to use to create new array, so it uses Object as safest type, because each class extends Object so it can safely store instance of any class. Why? Take a look at this example ... More on stackoverflow.com
Java: How to properly return String values from an ArrayList?
You have just returned an array. Returning an array returns the object, doesn't print it at all. For each variable in array, print to console variable For Java is something similar to this (look up for each loops) though you can achieve same thing using a standard for loop For (string objectName : arrayName) { System.out.print(objectName); } More on reddit.com
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March 12, 2018How to put string into an arraylist
One important thing: you shouldn't use ArrayList, collections in System.Collections are mostly still present for backward compatibility reasons. You should use List from System.Collections.Generic. Even if you need to store items of the object type, List will still be a better choice than ArrayList. The same is true about Hashtable, you should use Dictionary instead. Also ArrayList[] a = new ArrayList(); isn't correct. You should write it without []. More on reddit.com
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December 6, 2022Videos
Filling an ArrayList of type String with Strings
04:40
How to convert ArrayList to String Array | Java Interview Question ...
Converting ArrayList of String to a simple 'String[]' array in ...
Java: Convert Array to ArrayList, and ArrayList to Array
08:01
31 - Java Program To Convert ArrayList To String Array | Two ...
09:40
Learn Java arraylists in 9 minutes! 📃 - YouTube
Programiz
programiz.com › java-programming › examples › arraylist-string-conversion
Java Program to Convert the ArrayList into a string and vice versa
import java.util.ArrayList; class ...rintln("ArrayList: " + languages); // convert the arraylist into a string String arraylist = String.join(", ", languages); System.out.println("String: " + arraylist); } } ... In the above example, we have used the join() method of the String ...
W3Schools
w3schools.com › java › java_arraylist.asp
Java ArrayList
Elements in an ArrayList are actually objects. In the examples above, we created elements (objects) of type "String". Remember that a String in Java is an object (not a primitive type). To use other types, such as int, you must specify an equivalent wrapper class: Integer.
Programiz
programiz.com › java-programming › library › arraylist › tostring
Java ArrayList toString()
import java.util.ArrayList; class ... System.out.println("ArrayList: " + languages); // convert ArrayList to String String list = languages.toString(); System.out.println("String: " + list); } } Output · ArrayList: [Java, Python, C] String: [Java, Python, C] In the above example, ...
BeginnersBook
beginnersbook.com › 2013 › 12 › how-to-convert-arraylist-to-string-array-in-java
How to convert ArrayList to string array in java
We are converting this arraylist ... main(String[] args) { //An ArrayList of integers ArrayList<Integer> numbers= new ArrayList<>(); numbers.add(11); numbers.add(22); numbers.add(33); numbers.add(44); numbers.add(55); // ArrayList to Array Conversion using toArray() Object ...
Vultr Docs
docs.vultr.com › java › examples › convert-the-arraylist-into-a-string-and-vice-versa
Java Program to Convert the ArrayList into a string and vice versa | Vultr Docs
December 19, 2024 - ... import java.util.ArrayList; ... input.split("\\s*;\\s*"); // Splits on semicolon and trims whitespace ArrayList<String> list = new ArrayList<>(Arrays.asList(items)); System.out.println(list); } } Explain Code · This example demonstrates ...
Top answer 1 of 16
2109
List<String> list = ..;
String[] array = list.toArray(new String[0]);
For example:
List<String> list = new ArrayList<String>();
//add some stuff
list.add("android");
list.add("apple");
String[] stringArray = list.toArray(new String[0]);
The toArray() method without passing any argument returns Object[]. So you have to pass an array as an argument, which will be filled with the data from the list, and returned. You can pass an empty array as well, but you can also pass an array with the desired size.
Important update: Originally the code above used new String[list.size()]. However, this blogpost reveals that due to JVM optimizations, using new String[0] is better now.
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An alternative in Java 8:
String[] strings = list.stream().toArray(String[]::new);
Java 11+:
String[] strings = list.toArray(String[]::new);
Vultr
docs.vultr.com › java › standard-library › java › util › ArrayList › toString
Java ArrayList toString() - Convert To String | Vultr Docs
November 19, 2024 - Call the toString() method to convert the list into a string. ... import java.util.ArrayList; ArrayList<String> colors = new ArrayList<>(); colors.add("Red"); colors.add("Green"); colors.add("Blue"); String result = colors.toString(); System.out.println(result); ...
Baeldung
baeldung.com › home › java › java string › convert an arraylist of string to a string array in java
Convert an ArrayList of String to a String Array in Java | Baeldung
March 7, 2025 - Finally, if we work with Java 11 or later, we can directly call Collection.toArray(generatorFunc) to get the converted array without converting the list to Stream first: String[] result = INPUT_LIST.toArray(String[]::new); assertArrayEquals...
Blogger
javarevisited.blogspot.com › 2022 › 12 › 6-ways-to-convert-arraylist-to-string.html
6 Ways to convert ArrayList to String in Java - Example Tutorial
September 14, 2023 - The method we are using is nothing but accepts a Iterable and since ArrayList implements Iterable interface, we can use this method to join elements on ArrayList as delimited String. This method is also null safe and null objects or empty strings within the iteration are represented by empty strings. Google Guava is one of the famous general purpose library which deserve a place in every Java project. It provides common utility classes which can make your code simpler and easier to read, write, and test. Here is an example of Google Guava's Joiner class which can be used to convert a List to String in Java.
Dot Net Perls
dotnetperls.com › convert-arraylist-string-java
Java - Convert ArrayList to String - Dot Net Perls
We use a comma delimiter. Result The ArrayList's contents are now represented in a string with comma character delimiters. import java.util.ArrayList; public class Program { public static void main(String[] args) { // Create an ArrayList and add three strings to it.
Delft Stack
delftstack.com › home › howto › java › how to convert an arraylist to a string in java
How to Convert an Arraylist to a String in Java | Delft Stack
February 2, 2024 - The most straightforward and easy way to convert an ArrayList to String is to use the plus (+) operator. In String, the plus operator concatenates two string objects and returns a single object.
Coderanch
coderanch.com › t › 377381 › java › convert-ArrayList-Strings-String
convert an ArrayList of Strings into String[] ? (Java in General forum at Coderanch)
July 31, 2005 - To add a little to Layne's comment: although the Javadocs show an example like this: String[] s = (String[]) list.toArray(new String[0]); it takes only a little more typing to do this: String[] s = (String[]) list.toArray(new String[list.size()]); In the first example, the zero-length array ...
Top answer 1 of 6
1833
Use like this.
List<String> stockList = new ArrayList<String>();
stockList.add("stock1");
stockList.add("stock2");
String[] stockArr = new String[stockList.size()];
stockArr = stockList.toArray(stockArr);
for(String s : stockArr)
System.out.println(s);
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981
Try this
String[] arr = list.toArray(new String[list.size()]);
Java67
java67.com › 2012 › 09 › java-program-to-convert-string-arraylist-to-string-array.html
How to convert an ArrayList to Array in Java? Example | Java67
In this Java program, we will How to convert String ArrayList to String array.
Baeldung
baeldung.com › home › java › java string › converting a list to string in java
Converting a List to String in Java | Baeldung
April 7, 2025 - Learn how to convert a List to a String using different techniques.
TutorialsPoint
tutorialspoint.com › how-to-create-a-string-from-a-java-arraylist
How to create a string from a Java ArrayList?
July 30, 2019 - import java.util.ArrayList; public ... al.add("you"); StringBuffer sb = new StringBuffer(); for (String s : al) { sb.append(s); sb.append(" "); } String str = sb.toString(); System.out.println(str); } } Hello are you ·...
GeeksforGeeks
geeksforgeeks.org › java › convert-arraylist-to-comma-separated-string-in-java
Convert ArrayList to Comma Separated String in Java - GeeksforGeeks
July 23, 2025 - In the below example, we used StringBuilder's append() method. The append method is used to concatenate or add a new set of characters in the last position of the existing string.
Reddit
reddit.com › r/askprogramming › java: how to properly return string values from an arraylist?
r/AskProgramming on Reddit: Java: How to properly return String values from an ArrayList?
March 12, 2018 -
Hi, I'm doing homework for my computer science class and part of the homework is making an ArrayList that returns 3 inputed string values in a specific order.
When I run the program I get an output of: [Ljava.lang.String;@3cd1f1c8"}instead of ["specialist", "inventory", "add"]
Anyone know what I'm doing wrong? Here's the section of code:
https://imgur.com/a/nvqj1
Top answer 1 of 3
2
You have just returned an array. Returning an array returns the object, doesn't print it at all. For each variable in array, print to console variable For Java is something similar to this (look up for each loops) though you can achieve same thing using a standard for loop For (string objectName : arrayName) { System.out.print(objectName); }
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The code you have is correct, the problem is elsewhere. Where are you printing the values? Also please don't post a screenshot of code, look at the posting instructions in the sidebar to post your code. The problem is you have an array of Strings and arrays do not have a toString method so you can't print them properly directly. Use Arrays.toString to turn your array into be a string or manually loop over the array and print each element individually.