Open In App

Java Guava | Longs.join() method with Examples

Last Updated : 31 Jan, 2019
Improve
Improve
Like Article
Like
Save
Share
Report

The join() method of Longs Class in the Guava library is used to combine or join all the given long values separated by a separator. These long 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 long values.

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

Syntax:

public static String join(String separator, long… array)

Parameters: This method accepts two mandatory parameters:

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

Return Value: This method returns a string containing all the given long values separated by separator.

Below programs illustrate the use of this method:

Example 1:




// Java code to show implementation of
// Guava's Longs.join() method
  
import com.google.common.primitives.Longs;
import java.util.Arrays;
  
class GFG {
  
    // Driver's code
    public static void main(String[] args)
    {
  
        // Creating a long array
        long[] arr = { 2, 4, 6, 8, 10 };
  
        // Using Longs.join() method to get a
        // string containing the elements of array
        // separated by a separator
        System.out.println(Longs.join("#", arr));
    }
}


Output:

2#4#6#8#10

Example 2:




// Java code to show implementation of
// Guava's Longs.join() method
  
import com.google.common.primitives.Longs;
import java.util.Arrays;
  
class GFG {
  
    // Driver's code
    public static void main(String[] args)
    {
  
        // Creating a long array
        long[] arr = { 3, 5, 7, 9, 11 };
  
        // Using Longs.join() method to get a
        // string containing the elements of array
        // separated by a separator
        System.out.println(Longs.join("*", arr));
    }
}


Output:

3*5*7*9*11

Reference: https://google.github.io/guava/releases/21.0/api/docs/com/google/common/primitives/Longs.html#join-java.lang.String-long…-



Like Article
Suggest improvement
Previous
Next
Share your thoughts in the comments

Similar Reads