Guava’s Ints.join() Function in Java

Ints.join() function provided by Guava library in Java for working with primitive integer arrays. It simplifies the process of converting an array of integers into a single concatenated string, with a specified delimiter separating the elements. For example, join(“-“, 1, 2, 3) returns the string “1-2-3”

Ints.join() is part of the com.google.common.primitives.Ints class in Guava. It provides a concise and readable way to join the elements of an int[] array into a delimited string.

Example:

import com.google.common.primitives.Ints;
import java.util.Arrays;

class IntsJoinExample {

    public static void main(String[] args)
    {

        int[] a = { 2, 4, 6, 8, 10 };

        // Using Ints.join() method to get a
        // string containing the elements of array
        // separated by a separator
        System.out.println(Ints.join(", ", a));
    }
}

Output:

2, 4, 6, 8, 10

Syntax: 

public static String join(String separator, int... array)

Parameters: This method takes the following parameters:  

• separator: A String that acts as the delimiter between the joined elements. (but not at the start or end).
• array: A varargs or array of integers (int[]) to be joined.

Return Value: This method returns a string containing the supplied int values separated by separator. 

Example:

import com.google.common.primitives.Ints;
import java.util.Arrays;

class GFG {
    public static void main(String[] args){

        int[] arr = { 3, 5, 7, 9, 11 };

        // Using Ints.join() method to get a
        // string containing the elements of array
        // separated by a separator
        System.out.println(Ints.join("-", arr));
    }
}

3-5-7-9-11