StringJoiner length() method in Java 8

The length() method of the StringJoiner class in Java 8 is used to get the length of the current value of StringJoiner.

To work with the StringJoiner in Java 8, import the following package:

import java.util.StringJoiner;

The syntax is as follows:

public int length()

First, create a StringJoiner:

StringJoiner strJoin = new StringJoiner(",");
strJoin.add("US");
strJoin.add("India");
strJoin.add("Netherlands");
strJoin.add("Australia");

Now, find the length of the StringJoiner i.e. the number of elements in it using the length() method:

strJoin.length());

The following is an example to implement StringJoiner length() method in Java:

Example

 Live Demo

import java.util.StringJoiner;
public class Demo {
   public static void main(String[] args) {
      // StringJoiner
      StringJoiner strJoin = new StringJoiner(",");
      strJoin.add("US");
      strJoin.add("India");
      strJoin.add("Netherlands");
      strJoin.add("Australia");
      System.out.println("Length of the StringJoiner = "+strJoin.length());
      System.out.println("StringJoiner = "+strJoin.toString());
   }
}

Output

Length of the StringJoiner = 30
StringJoiner = US,India,Netherlands,Australia