Java Guava | Chars.join() method with Examples

The join() method of Chars Class in the Guava library is used to combine or join all the given char values separated by a separator. These char values are passed a parameter to this method. This method also takes the separator as the parameter. This method returns a String which is the result of join operation on the specified char values.

For example: join("-", 1L, 2L, 3L) returns the string "1-2-3".

Syntax:

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

Parameters: This method accepts two mandatory parameters:

separator: which is the character that occurs in between the joined char values.
array: which is an array of char values that are to be joined.

Return Value: This method returns a string containing all the given char values separated by separator. Below programs illustrate the use of this method: Example 1:

Java

// Java code to show implementation of
// Guava's Chars.join() method

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

class GFG {

    // Driver's code
    public static void main(String[] args)
    {

        // Creating a char array
        char[] arr = { 'a', 'b', 'c', 'd', 'e' };

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

Output:

a#b#c#d#e

Example 2:

Java

// Java code to show implementation of
// Guava's Chars.join() method

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

class GFG {

    // Driver's code
    public static void main(String[] args)
    {

        // Creating a char array
        char[] arr = { 'G', 'E', 'E', 'K', 'S' };

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

Output:

G*E*E*K*S

Reference: https://guava.dev/releases/18.0/api/docs/com/google/common/primitives/Chars.html#join(java.lang.String, %20char...)

Java Guava | Chars.join() method with Examples

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