This Java example concatenates elements of a list with commas using String.join() method.

Join List Strings with Commas in Java

In below example, we are passing a list as an argument to the String.join() method.

import java.util.Arrays;
import java.util.List;

public class Java8StringJoinExample {

    public static void main(String[] args) {

        List<String> list = Arrays.asList("Today", "i", "am", "going", "to", "office");
        String joined = String.join(",", list); 
        
        System.out.println(joined);
    }
}

Output:

Today,i,am,going,to,office

The elements of the list are joined with a single space character

String joined = String.join(" ", list); 

Java ArrayList Source Code Examples

• Sort List of Integers in Ascending and Descending Order Example
• List (ArrayList) Iterator Example
• Create the Immutable ArrayList with List.of() Method Example
• Create Immutable ArrayList with Collections.unmodifiableList() Exmaple
• Java 10 - Copy List into Another List Exmaple
• Java 8 - Copy List into Another List Example
• Java - Copy a List to Another List using Collections.copy() method
• Java - Copy a List to Another List Example
• Java ArrayList spliterator() Method Example
• Java ArrayList sort() Method Example
• Java ArrayList retainAll() Method Example
• Java ArrayList removeIf() Method Example
• Java ArrayList removeAll() Method Example
• Java ArrayList remove() Method Example
• Java ArrayList lastIndexOf() Method Example
• Java ArrayList isEmpty() Method Example
• Java util ArrayList indexOf() Method Example
• Java ArrayList get() Method Example
• Java ArrayList ensureCapacity() Method Example
• Java ArrayList contains() Method Example
• Java ArrayList clone() Method Example
• Java ArrayList clear() Method Example
• Java ArrayList addAll() Method Example
• Java ArrayList add() Method Example
• Java 8 forEach() List Example
• Add Enum Values to ArrayList Example
• Join List Strings with Commas in Java
• Java Stream filter null values example
• Java ArrayList subList() Example
• Get Index of Elements in ArrayList Example
• Java ArrayList removeIf() Example
• Java ArrayList add(), get() and set() Method Example
• Iterate over ArrayList Using forEach Java
• Iterate over ArrayList using Iterator in Java
• Java ArrayList indexOf() and lastIndexOf() Example
• Search an Element in an ArrayList in Java
• Clear ArrayList in Java Example
• Java ArrayList removeAll() Method Example
• Java ArrayList remove() Method Example
• How to Iterate over ArrayList in Java
• How to Remove Element from ArrayList in Java
• How to Access Elements of ArrayList in Java
• Create ArrayList from Another ArrayList in Java
• How to Create an ArrayList and Add Elements to It